题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp，上传完成后会在上方生成预览，用鼠标连续双击缩略图，或拖动缩略图，该图片就被绑定至本题，显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片，绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习：Physics Unit21: Electromagnetic Induction & Faraday's Law
本习题练习试卷来源于题库网 (https://tiku.one)， 为试卷打印版，您也可以在网站平台(https://tiku.one/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 80，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://tiku.one/test80.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: admin    总分: 142分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月20日 21:29  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following are units of magnetic f))kg:ro b i) +ttzclo4lux except

参考答案:    
标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of indp01ou ne(ao *kuction states that the $emf$ induced in a loop of wire is proportional to

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the number of loops of wire in a coil produces .d cob3e6gxs:qt u;8 cwhat kind of change on theogbdst exc.uq; c36:8 induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the strength of the magnetic field through a loop of wir3v4g:eleodb*4egm64) c qd tfe produces what kind of change on thoe cgm44 v6 *dle4e g3t)bqd:fe induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the diameter of a loop of wire produces l7tqku cj;u9nvw lc9a, 54ze6what kind of change on the indut c4wjal9z l7v 6ue,kn5;u cq9ced $emf$, assuming all other factors remain constant?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As a coil is removed from a magnetiwn sal2l4 f7f4e6b9tc c field an $emf$ is induced in the coil causing a current to flow within the coil. This current interacts with the magnetic field producing a force which

参考答案:    
标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  According to Lenz's lp+,em6-kqr noaw, the direction of an induced current in a conductor will be that which tends to produce e 6pk-,rm qo+nwhich of the following effects?

参考答案:    
标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horajn lb lzwdl 42+k0y7p*o94b fizontal table. A bar magnet is held above its center with its north n0fpd*7l l 44+2k o z9blwyjbapole pointing down. The stationary magnet induces (when viewed from above)

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies np( gy*75kcwk6( r gpdflat on a horizontal table. A bar magnet is held above its center with its north pole pointing down, and released. As it approaches the coil, the falling magnet induces (when viewdn( pk( c rgp7wk*g65yed from above)

参考答案:    
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a table top in a region where the magnetic field vector pwb060mis938 ske8mo i6pjvu9 yx h4xwoints straight up. The magnetic field vanishes suddenly. When viewed from above, what is the u sys06pw9wk4xhje3b06v9m8iio mx8 sense of the induced current in this coil as the field fades?

参考答案:    
标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a level table top in a woao9 sq0 0(kw+imkq6region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. +0w swkq 0 o9km6aqo(iWhen viewed from above, what is the direction of the induced current in this coil as the field increases?

参考答案:    
标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a hz:7l5z xdfcx 3cu/n: forizontal table top in a region where the magnetic field points straight down. Thenc/ zz7x:5d3fuf: c xl magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current in this coil as the field disappears?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wire lies on a horizonjyt3 hh0 qm -m*g.ah-stal table and carries an ever-increasing current nort0hqh- a*s.3 t hmjym-ghward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the induced current circles

参考答案:    
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls through a loop of wire with the nox(ze1vlgit/lcm3o2y 6y8(y f x2 n;ff9u5xc rrth pole entering first. As thegfclz( x8yt2 nmcy/fxveio f52 l1 r3yu9;6(x north pole enters the wire, the induced current will be (as viewed from above)

参考答案:    
标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated at constant angular speed abo6) uc4x) qc2qgfgd.q/phw wv-ut an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the ind. gq qdw-w/4u f6qx)p2hvgc)cuced $emf$ is to be zero?

参考答案:    
标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated t- n4j79d xjfb uzaj:c()hki7at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic :xtbdnh cj4k7)jfz-au(i 97jfield points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be a maximum?

参考答案:    
标记此题
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.dtiy x0we,a/(
参考答案:    

标记此题
18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Lenz's law.
参考答案:    

标记此题
19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
List the three ways that a2n0 mhbc6 zfk,n $emf$ can be induced in a loop of wire.
参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wire moves across a magnetic field. ua 7 qycg4 -lz*bt veulhf3/32 The $emf$ produced in the wire depends on

参考答案:    
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in the east-west direction) is moved northward atcefn:f plo2 -p5kj)w0 constant velocity through a magnetic field that points straight down. Make a statement concer5nl20f:pe kpcf j )o-wning the potential induced across the rod.

参考答案:    
标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar rotates at : 7xoc)3eo. xyl5n mboa constant angular velocity $\omega$ about a vertical axis through one of its ends while in a constant magnetic field B that is directed down. The $emf$ induced between the two ends of the bar is

参考答案:    
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generatosh w i o+/p7d+5z*lbrkr transforms

参考答案:    
标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator coil rotates through 60 revolutions each second / k.9o1zw/twykdkw b;. The frequency of th;o 9w1 dkk/ wbwyt.k/ze $emf$ is

参考答案:    
标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device usemo6d4d7z nb/u6)-mg 4 l krt-o.ydbdad to

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device that9 qpw;b 1vn-df

参考答案:    
标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, ifa sj(o u)inh8scz n+ pyp9.d)s- y/q7y the secondary coil contains more loops than the primary coil the8sph n)(ca+7jq.usyy9-pydsi nzo/ ) n it is a

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coil contains more loops than the secondary lr*( -ct/bbbm coil then it is -mbc/r* (bl bta

参考答案:    
标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the power inpp.3fct 2ezv0dn9ty k- zktci56au//put

参考答案:    
标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a given LC resonant circta;g(gnw1b, )ub ,t f0vyfmd4uit,

参考答案:    
标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to an nhue 2wxmm1*+n4mr h (ideal battery of constant terminal voltage. At the moment contact is made with the bat(mhxm mrh*12nen+ u4wtery, the voltage across the resistor is

参考答案:    
标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to an i0 z45zsk5s0ll q cs1t7i*cv bm6k/ffgdeal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across th zl0sv/t g0 c5ki *l1mkq67 fs4sb5cfze inductor is

参考答案:    
标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resis l8wbtxvls (65-pxu /stance R is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the inductance is 2L. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resistance R is connected (b5na9ck l.,hfo(ji;np jth2to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the resistance is 2R. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to a battery. dxg*l(tho7 tdbe(s.. gq3(r:mvx5+ 0tmb rnj The time constant for the circuit represents the tin x.m( 3tlmog+ x qtj7t*(ghb ed5.:rsr 0dvb(me required for the current to reach

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in seriesl3 fszzgg o6m/h3/gdgpr 5q6)0 uo1tv to a battery. The battery is suddenly removed from the circuitufgz/ 0g s1d6g 33gh5/oo6rmvz qpl)t. The time constant for of the circuit represents the time required for the current to decrease to

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following have the ip, dvo,r3r/nsame units except:

参考答案:    
标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor is connected to an9l6h1 jivq 9(op *vlfq AC power supply. On this circuit, the current

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is connected to an AC power supply. In this circutv0jy) )l1ejt c3(i cnk8b k gw,)ub,dit, the current) julkd ( v)cjbnbck)i0,8gte3y,t1w

参考答案:    
标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The inductive reactance in an ac circuiz0mmdoom);aku nfv +*xq2*5qt changes by what factor when the frequency ism; * mqdma 0onq*+z2u5)ov kxf tripled?

参考答案:    
标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the frequency of the AC voltage across an inductor is doubled, the dy f3j (mq v;+uys4h,)aho1atinductive reactance of 4t3 d+a);ys,q vho1jf u(myha that inductor

参考答案:    
标记此题
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC vx q9fl;4 omrs,oltage across an inductor approaches zero, the inductive reactance of that coilsq,9 ;ofrx4ml

参考答案:    
标记此题
43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure capacitor is connected to an AC power scp: oj,hds9u1ws 5 y9yupply. In this circuit, the curre9ph5yy9sj du 1,osw :cnt

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The capacitive reactance in an ac circuit changes by what factor whe n. md3-ev* hsvulo:u4abxs 1(n the frequency is tr*uonumxa-: hdv. ls4 es3b1(v ipled?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltage across a capaciy -/l8uh2rz+jdp q r8mtor approaches zero, the capacitive reactance of thr2qz8p-8/dmrul + h jyat capacitor

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle between the vbe q9,tbss - t kq0j n-3lp+07px*vqkpoltages of the inductor and capacitor in a RLC series circuitnq vk ,09 sppx+b-7-ttqlj*3 sbek pq0?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The power factor of an RLC circ8 f:fn/okcg (mjy w4 a(7zke;x+sfq+auit is defined as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the circuit increases if R incr r,ph;ld9 1kanzdh,3f eases. When is this spd hhda, knf;9z3,r1 ltatement true?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. nej /0wd(0 xoq The impedance of the circuit increases if $X_L$ increases. When is this statement true?

参考答案:    
标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC series circuit. The 5mix4h 03ngpq x ,cq u9nm8q6mimpedance of the circuit increases if $X_C$ increases. When is this statement true?

参考答案:    
标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the inductance and the capacitance both double in an LRC serixlcayx7 d nqwkrxi3 ,oa91gi: ,tw8 )1es circuit, the resonant frequency of that circuit w1ixqaor3atyidx 8 xn9lc,ww7gk : ,1)ill

参考答案:    
标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit that is driven by an AC applied voltage. At resov gg9/mr m;v:bnance,

参考答案:    
标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a series-i1op sfv: lo429bxzcbeos29a9 jn 9nx+e:mg RLC circuit occurs when

参考答案:    
标记此题
54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A flux of $4.0 \times 10^{-5} \; Wb$ is maintained through a coil for 0.50 s. What $emf$ is induced in this coil by this flux?

参考答案:    
标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating in a uoyy3 *f,.z1e nc;grsuniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic fielo.r1ug 3y fnscey ,*;zd vector are parallel.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotatingsa j5bau87y/j in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic f5ajjy/us 7 8abield vector are perpendicular.

参考答案:    
标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating iyfqhdquau1d-(g1z z) -8kw ,an a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field )zqhwqa(fk-1g1- azu8 d dyu,vector are at an angle of $30^{\circ}$.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The cross-sectional area of an agl x r52anr2;hdjustable single loop is reduced from $1.0 \; m^{2}$ to $0.50 \; m^{2}$ in 0.10
s. What is the average $emf$ that is induced in this coil if it is in a region where B = 2.0 T upward, and the coil's plane is perpendicular to B?

参考答案:    
标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil change;8)ykavkye v.r9om )pusc f71s from $4.0 \times 10^{-5} \; Wb$ to $5.0 \times 10^{-5} \; Wb$ in 0.10 s. What $emf$ is induced in this coil?

参考答案:    
标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil is wrapped with 200 turns of wirjxfne1 ta7:u6( /u,tdmzbix1e on a square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the planeu (7x16 njtma zfedbt/i,:x1 u of the coil. If the field changes uniformly from 0.50 T to 0 in 8.0 s, find the average value of the induced $emf$.

参考答案:    
标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A square coil of wire with 15 turns 8cs9fy doz ;4hand an area of $0.40 \; m^{2}$ is placed parallel to a magnetic field of 0.75 T. The coil is flipped so its plane is perpendicular to the magnetic field in 0.050 s. What is the magnitude of the average induced $emf$?

参考答案:    
标记此题
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil of 160 turns a5og 3s cz onfj. .3ibir,m3d,rnd area $0.20 \; m^{2}$ is placed with its axis parallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 T in the negative x-direction in 2.0 s. If the resistance of the coil is 16 W, at what rate is power generated in the coil?

参考答案:    
标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An airplane with a wing span of 7h5zq0lypk rtg0i09d60 m flies horizontally at a location where the downwpi0ky0d h095 gq zlrt7ard component of the Earth's magnetic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that is 2.0 m long rotates almyku45 tp15l6 9o9mwm/kfzv bsf; r3t a constant angular velocity of 2.0 rad/s about a vertical al1 5rp wt4vf;ky mu9bo56 9mzfsm 3/lkxis through one of its ends while in a constant magnetic field of $5.0 \times 10^{-5} \; T$. If the magnetic field vector points straight down, what $emf$ is induced between the two ends of the bar?

参考答案:    
标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator has 50 loops anqvi(h,rgt 48i */ywvt -tls o8d a cross-sectional area of $0.25 \; m^{2}$. What is the maximum $emf$ generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?

参考答案:    
标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 1007yrt yxk; n5k0 turns of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced $emf$.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator has 80 rect8f/amu3c lb 1yangular loops on its armature. Each loop is 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parab81/ufa ycm3 lllel to the long side. If the loop rotates in a uniform magnetic field of 0.30 T, which is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator?

参考答案:    
标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 100 turnscx9 / ((vxu-bi; tqcdh of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current.

参考答案:    
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that you wish to construct a simple AC generator with an om 49ue mrk,0 qn3qw;zjutput of 12 V maximum when rotated at 60 Hz. A magnete;u,9rqw4n mzk0q mj3ic field of 0.050 T is available. If the area of the rotating coil is $100 \; cm^{2}$, how many turns are needed?

参考答案:    
标记此题
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are designing a geneewpk9gs jzsvd4k 3 ())gnc 5(orator with a maximum $emf$ of 8.0 V. If the generator coil has 200 turns and a cross-sectional area of $0.030 \; m^{2}$, what would be the frequency of the generator in a magnetic field of 0.030 T?

参考答案:    
标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance of 6.00 W. The motor operattikn3f 2 i w9/-gxwl6bes on $120 \; V$ AC, and when running at full speed it generates a back $emf$ of 105 V. What is the starting current of the motor?

参考答案:    
标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC 3 0qivbnpk/: rl ks655 jmm-eumotor have a resistance of 6.00 W. The motor operates on 120 V AC, and when running at full speed it generkvemi05m-rukps6 3 j:qlb5 n /ates a back $emf$ of 105 V. What current does the motor draw when operating at full speed?

参考答案:    
标记此题
73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is con hprk:r8v..ocnected to a 24-V power supply. The operating current is 1.0 A.r rk8:.pvc.oh What is the start-up current?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal res h5q; j8du+bu-gia +iuistance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speed. ; aj ugud+q8b -5uii+hWhat is the back $emf$ when the motor is running at full speed?

参考答案:    
标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is connected to a 24-V power sub lyz;)9eowr )pply. The op )e;9bryz)lwo erating current is 1.0 A at full speed. What is the back $emf$ when the motor is running at half speed?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A step-down transformer is needed to reduce a primary vol.60vcu rti;xctage of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

参考答案:    
标记此题
77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  2.0 A in the 100-turn primary of a transformer causey2u(g;x5 q52y gcq gmnzv 8nd:s 14 A to flow in the secondary. How man2y;8czgy(ggux nvqd5n5:m q 2y turns are in the secondary?

参考答案:    
标记此题
78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, how many turns are necessary in a 110-V prizm w,w 1tijc(,mary if the 24-V secondary has 100 turns?(m,1tw wzc ,ji

参考答案:    
标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consists of a 50 k6r :-tf5,xm p)aesx9lo-ttv0-turn primary coil and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is the c9x-kxp tf,lmta vo:s)-6t re5urrent in the primary?

参考答案:    
标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.0 A at 110 V flows in the primary of a tra zzjh,zg+ b 7vb*/+cuansformer. Assuming 100% efficiency, how many amps at 24 V can flow ,++gj/a*z vu7 chzbbz in the secondary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of :8qg,/3 xpgq9zhdlxlm nj 5u o)8 o3sta neon sign transformer provides 7500 V at 10.0 mA. The primary coil operates on 120 V. What doex/h q, tp ogzn8j 5l lo39um)s8gdq:3xs the primary draw?

参考答案:    
标记此题
82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil anr3 oag2 j)ebe7d 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primarg2)r 3a7e jbeoy, what voltage is present in the secondary?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 tu :w )z,adtl p4a*x wpyy.n9vutg ;:qe w8ws3a2rns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what current is present ,atap2 :*xw ;a8ygnwws :9yw .ldvqtue4p3z) in the secondary?

参考答案:    
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transfor.a9 t0z.wce7 4dgc onvmer has 100 turns and its secondary has 200 turns. If the input current at the primary is 10z g7twe9. o4.vn0dcc a0 A, we can expect the output current at the secondary to be

参考答案:    
标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 turj 3 ya 4fj1m.oy0em3zuns. If the input voltage to the primary is 100 V, we can expect the output voltage of 3u3e .am 4moj10zfyjy the secondary to be

参考答案:    
标记此题
86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary h7a( cgv.6lxiacj 6n c-as 200 turns. If the power inp7(-glc 6a ci6cxvanj.ut to the primary is 100 W, we can expect the power output of the secondary to be (neglecting frictional losses)

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually steppen(kb.nxwe ) 7xd up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the number of turnskxbwnex7 ( )n. in the secondary if the primary has 200 turns.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually steppedm2phe,ou q uikyii2fh0 39 y/0 up to 4500 V by a transformer and transmitq923yifp uh,y /kme2oi00 hi uted through a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually steb/vq1izc rx7 )pped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage po7qb) xicr/1v zwer lost in the transmission line if the voltage is not stepped up.

参考答案:    
标记此题
90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission (xx:seb*0jm; rb6 q::(vv fw+jjfnt gline 50 km long has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage bs:vtm bw:x* 0n jjf(f+:rgve6x(jq; is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy would be lost if the transformer were not used?

参考答案:    
标记此题
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km oyr l1fn-7a fr6: o5vrlong has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy is loaf7yov:6o r fr-l15n rst when the transformer is used?

参考答案:    
标记此题
92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  100 kW is transmitted down a 6-W :cbnp-7vy.6r )st wlmline at 1000 V. How much less power would be lost if the power were transmitted atsr.l b:cw7)m-np vy6 t 3000 V instead of at 1000 V?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The output of a generator is 440 V at 20 fzxfe9pe9d9/cz 06f(mhma nhs21rf e1f/r 1p A. It is to be transmitted on a line with resistance of 0.60 W. To what voltage must the generator output be stepped up with a transformer if the power loss in transmission is s1hpfrn1e/fd9 690z1xe fh(mcf/z2r9 a empf not to exceed 0.010% of the original power?

参考答案:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a current of 5.0 A. How much energy is stor)efsftxtbc(t2 3 wa7)zh4 eg *ed in the coil's magnetic fez7 wg)bth a4t)f s3tc*( fx2eield?

参考答案:    
标记此题
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit contains a 6.0-W re i*,k h-bh2puhsistor and an 18-H inductor. What is this circuit's time constant?hbk ,2upi-*hh

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the peak voltage in an AC circuit wyv90ynaua/ av.;a lf+ here the rms voltage is 120 V?

参考答案:    
标记此题
97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC outlet. What is thi dc:gok +gd57e peak current?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed i: xikjco pn.)o3hrp2.g ibi3- nto a 120-V AC outlet. What is the resistance of the lam- gpixb )ko n cj.r233.p:ihoip?

参考答案:    
标记此题
99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected 18jn ;,+xk*bqiqz.m9 ihnduoto a 120-V ac power supply. What is the peak current throxbn1u .*zqqhoj+;dkm ni 8i,9ugh the resistor?

参考答案:    
标记此题
100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected 3bx: pqvp1,)silp:fb to a 120-V ac power supply. What is the power dissipated in the resistorx)f,pl p3 1:qspv b:ib?

参考答案:    
标记此题
101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W resised ui.k iy8wm ak8t2*7tor is $I = 0.80 \sin (240 t)$. What is the rms current?

参考答案:    
标记此题
102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W resis06*+pb yeig(wpi8 td. scz 0zjtor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

参考答案:    
标记此题
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-Wz6/ync y(m 0wk resistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
104#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the reactance of a 1.0-mH inductor at 60*r( 0i feb4lipe0a d). u,llxf Hz?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
105#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the inductive rtpk9m tvh3jom)opd 6c-:i3 +beactance of a 2.50-mH coil at 1000 Hz?

参考答案:    
标记此题
106#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will a 14.0-mH coil gjyv 2:hk/xr*xb lqw39vv3 yxy::y2whave 14.0 W of inductive reactance?

参考答案:    
标记此题
107#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessaryxlwks5,i7z bq/ 5/nxs for 157 W of inductive reactance at 1000 Hz?

参考答案:    
标记此题
108#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in a 60-mH ki;rd(2o ke .cinductor when 120 V AC at a frequency of 20 kHz is applied toe;k c( doi2rk. it?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
109#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current thgckwpxe2 93-tydh j15rough a 2.50-mH coil due to a 110-V, 60.0 Hz source?

参考答案:    
标记此题
110#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the capacitive reactance of a 4s1)lpx(lmf 4 w.7-mF capacitor at 10 kHz?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
111#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor is needed tdw4abtlum(hgb3.w:: o have 50 W of capacitive reactance at 10 kHz?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency does a 10-mF capacitore6p9 , vfhbedp8-2v es have a reactance of 1200 W?

参考答案:    
标记此题
113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency wil+f )z0/ rxob *ig-wmpbl the capacitive reactance of a 0.010-mF capacitor be 100 W -fgr/o b) iwx+mpbz*0?

参考答案:    
标记此题
114#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current t)i a8.5a)cm tacu 1oa xpgnd10hrough a 0.0010-mF capacitor at 1000 Hz and 5.0 V?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
115#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the impedance of an ac series circuit wj kyh4)raq74zith 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W ca7 khqr4j4a y)zpacitive reactance?

参考答案:    
标记此题
116#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total impedance at 1500 Hz if a 100-W resistor, 20-mH coil, andgj f,z7swu6 ichgkt8-y:-3vl 1.0-mF capacitor are connectedkfs:g6i 3,htg -w7vuljz -y 8c in series?

参考答案:    
标记此题
117#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle au l8l(714i.z xwf2/y,t f f:cfhkaqwit 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connected in serl z8xw4fq lkfwytc21fuiifa7h (:.,/ies?

参考答案:    
标记此题
118#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is connecte28oq0 fiz6.4epqu u ozd in series with a 20-mH inductor, what is the imp8 fiooqp6zu ue0 .2zq4edance at 1000 Hz?

参考答案:    
标记此题
119#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is conn.uur.mkkr p qr3nwx.u9-( (jcected in series with a 20-mH inductor, what is the phase angle at 1000ux r (wk-up. 9.mrq.rcjku 3n( Hz?

参考答案:    
标记此题
120#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in a series circuit with a 20-mH cxxw0l 5tqj*y1oil and 1.0-mF capacitor for a total impeqy x*jxwlt5 01dance of 100 W at 1500 Hz?

参考答案:    
标记此题
121#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following capacitancek/lal 6 c7hxr8s is needed in series with a 100-W resistor an7 86c laklrx/hd 15-mH coil to get a total impedance of 110 W at 2000 Hz?

参考答案:    
标记此题
122#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance must be put in series u/str1w,d,4nv )qi b*c -g .xoippi1wwith a 450-mH inductor at 5000 Hz for a total impeda1p .-ti, w/d*rvo4up)ixicb 1nq ,gswnce of 40000 W?

参考答案:    
标记此题
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be put in series with a 100-kW)e7bpatt *z3bnw xt5 -42r(n z/w8hse gqii1 s resistor at 1.0-MHz for a total impedancep3q) (b1nzn8t25w/ts e4*a hzwex i-7rbigts of 150 kW?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
124#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connec4 r,)gc/.wo yu lb,efhted in series with a 20-mF capacitor. What is the impedance at 1000 bwfeuo y4, g. ,c/r)lhHz?

参考答案:    
标记此题
125#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series with a 10-mF c br9nw-dxq .(rapacitor at 1.0 kHz for a total imped(.r wqxnbd9r-ance of 45 W?

参考答案:    
标记此题
126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in serz r1etj9 , fbxsa)xfd5y))z-sies with a 10-mF capacitor at 1.0 kHz for a phase angle -zsz 9ta))r)bx1y d,ff5 sjx eof $40^{\circ}$?

参考答案:    
标记此题
127#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed io /zp cvmtb/)h4 xu2,**cmohh n series with a 30-W resistor at 1.0 kHz for a total impedance of 45 /hcxo)u4, 2m*hv *t/zb ocmphW?

参考答案:    
标记此题
128#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is in series with a 100-mF capah xyy0 3e)i(qycitor at 120 Hz. What is the phase y0)3exyh(qiyangle?

参考答案:    
标记此题
129#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows at 5.0 V and 1500 Hz if a 100-W resistor, 20-mH coil, s/7yq-)hc .u egm. injand 1.0-mF capacitor are jiny/m. u 7- s)gqeh.cconnected in series?

参考答案:    
标记此题
130#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit consists of a 100-W resistor, a 10.0-mF capacitor, a7h25kwghyr p,nd a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What is the rms current in the 5,g7pyw2r khh circuit?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
131#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistance of 55 W, a capacitor of capacitive reactance 30 W, and an inductorq cf cbe/i5q6ft 45ljekx(1z;8uai:r of inductive reactakt(e6jrifu;qx5c54c ea f8b/1:lizqnce 30 W are connected in series to a 110-V, 60-Hz power source. What current flows in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a series RLC circuit containing oh579t f1 kjar:6 m1p(deipwha 50-W resistor, a 10-mF capacitor, and a 0.45-a61i h9roe1 (ft k:p 75dphwmjH inductor, when connected to a 60-Hz power supply?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W r kp (wl1t0jm1gesistor for a phase angle of m1 k0j gtwp(1l$40^{\circ}$ at 10 kHz?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
134#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit has R = 20.0 W, L = 200-mH, C = 14pdvyv /cg-v 00.0 mF. At what frequency should the circuit be driven in order to have maximum power transy/cv-vp0vd4 gferred from the driving source?

参考答案:    
标记此题
135#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power output in an ac series circuit with 12.0 W resistance, *ksijboi033i0z1e40cm;c)yf5lck iuo u* f k 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 1200jciyc3kzl3c muif05k *oe*1u o0)4ib fsk;i -V power supply?

参考答案:    
标记此题
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an AC circuit issfz2(d5 yaj adp(dkkq/: m) s8 $63^{\circ}$. What is the power factor?

参考答案:    
标记此题
137#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ac series circuit has an impedance of 60 W and a resistance k8n 5qisyedq 17m3c l/of 30 W. What is thn3e 7c/8 dli51qkqys me power factor?

参考答案:    
标记此题
138#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power factor for a series RLC civo 6 g t;w;e 8u+-7zkj:ippovwrcuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz powe8v oi;zu -t:6wwp;7p j egv+okr supply?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
139#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the resonant frequency of a 1.0-d -ntau), ks3hmF capacitor and a 15-mH coil in series?h )nat3-du sk,

参考答案:    
标记此题
140#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is needho1gx iz )vtag: o4)*lt* ,exeed in series with a 4.7-mF capacitor for a resonant frequency of 10 ivzoa ,*g 4le:h)1)txt* xe ogkHz?

参考答案:    
标记此题
141#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series with a 3.7-mH inductor for e: 214 xi yjtkn5 cegrv.np2;oa resonant frequency of 1000 1j.ge:nev2xo ikc5 rn4;pt y2Hz?

参考答案:    
标记此题
142#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor must be placed in series with a 3xe qg06.* dvfl0-W resistor and a 40-mH coil if the resonant*l .fq0d6gxe v frequency of the circuit is to be 1000 Hz?

参考答案:    
  • 姓名:游客(未登录)
    •
    总分:142分 及格:85.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 142 道题
    本平台(https://tiku.one/)支持练习，作业与考试(自动评分)三种模式，群组成绩统计排序导出，题目动态变量实现同卷千人千题。
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

    试卷内容到此结束!   © 2025 题库网 (https://tiku.one)版权所有

    浏览记录|手机版首页|使用帮助|题库网 (https://tiku.one)

    GMT+8, 2025-11-5 04:24 , Processed in 0.862227 second(s), 305 queries , Redis On.