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 6vn:)kxrgg g,flux 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 inductiou/uyige5 m.rt6a09sxaro2a t(4l bz 0n states that the $emf$ induced in a loop of wire is proportional to

参考答案:    
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 7 qn se5a( oasuyq0*9sl;mx:b coil produces what kind of change on the s9ss(5q;mqay7n xlue0 *aob: 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 loop2w/x ev)e*k p) uekvv- of wire produces what kind of chan kk-w)e/pee2 *vuv v)xge on the 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 produce8lswp lqb7mqc-zve0fu80k ; 7s what kind of change on the induceevl;c78ws0f- zk 0qqmlb7 up8d $emf$, 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 h6+c t grd 7dv5x9rg47ij 1fvsfrom a magnetic 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:    
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
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  According to Lenz's law, the direction of an induced current in a conductor wi zrhrz0sh (tn-e;a/3 bll be that which tends to produce which 0rsnea(zt/z;bh - r3hof the following effects?

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
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal table. A bar mj(i kp:nepw+c-7l /;qs1 b v9quam6 xjagnet is held above its center witha v;17pq +ubp/e -i:6w(9qjmnsk jlxc its north pole pointing down. The stationary magnet induces (when viewed from above)

参考答案:    
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 flat on aq1c/ 5)acb;y ift)bb e horizontal table. A bar magnet is held above its center wit)ac tic)b; /1 bbyfeq5h its north pole pointing down, and released. As it approaches the coil, the falling magnet induces (when viewed 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 fiele5 6j,8mt .vz frfoks3d vector points straight up. The magnetic field vanishes suddenly. When viewed from above, jero.,z58t fmsv 6f3kwhat is the 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 region where the magnetic .qxq 7u q/uim;ayc9n 1vx50dtfield vector points straight up. The magn0adn;5./i c xquxqm1y7 u vqt9etic field suddenly grows stronger. When 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 horizontal table top iv6 6cvfj h;rhx)4k s9bbnzz81n a region where the magnetic field points straight down. The magnetic field disappears suddenly. 614)8svrhh;nv zx9 fcb jzb6k When viewed from above, what is the direction of the induced current in this coil as the field disappears?

参考答案:    
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 horizontal table and carries an ever- ied/eh3i6 hwo )mv2ga1*/ kqkincreasing current northward. Two coils of kh63/ 2am/og) q1iw ekdi*vhewire 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 w9 ar8 l0:dksbqire with the north pole entering first. As the north pole enters the wire, t 0d lq:98sbarkhe 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(njpufd0w 8z)n nxl6c +(1 r ;crd7opx about an axis whose direction can be varied. In a regil z d 8j1rfo)p+xrpc6 n7n(uwnx0c;(don where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be zero?

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
16#
 
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 angul:ejxt)d ys 9v+ar speed about an axis whosejd e+xyst:) v9 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 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.i mu*:v/ yh12.7oi wclemv0tf
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 igs+6.zbk **ac5izhk-1cfg4p5vlbd0 u rb w 1that an $emf$ 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. n4xuo 7:a ot 4t5c*s8v0s n.hek/fsfg 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 /ofd7r la3 4pdmoved northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential inducd dfrlp3/ao74 ed 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 a c1 hbizy:9 qkbzja/x4 (onstant 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:    
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
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generatos:. mt y*o;f d3eceu9er 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 6si3 d9t l 0ha8fg5)chnb /s+km0 revolutions each second. The frequency of t3casbs+ikn dmg) fl h/0t5h9 8he $emf$ 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 use / 82yipgc-hl- xjkbq3d to

参考答案:    
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 deoz; 19. nplng(l7v iwivice that

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, if the secondary coil contains more loops than the primn8 rt:fleafpqre 02+9ary coil the0l tfqa +pnr9e:f2r8en 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 th/*tlnn zu8g-n e primary coil contains more loops than the secondary coil thguz-n* ltnn /8en it is a

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 po)a-jie7f bwm +wer input

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 resonan )*sxtuu2w. t ;vklqdtaq8 -z +us.;dqt circuit,

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 inducmme-:d;w0ith tor are connected in series to an ideal battery of constant terminal voltage. At the moment con;0:ihm me wdt-tact is made with the battery, 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 tayf. * 7zhkq4po an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the ipq fyk4.hz7a* nductor 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 resistance R is conne4zy5im slk.t fi,:p6 072f6r lsbbvi icted 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 conne,0859b,h.c j xnjur)mxt ajbm;- ozdzcted 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 resistance is 2R. When it is connected to the same $emf$, what will be the final value of 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
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 ser/ t8yox0ew0 rcies to a battery. The time constant for tco0/8 rwye 0txhe circuit represents the time required for the current to reach

参考答案:    
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 series to a battery. The battery i/;qn9eb iz3is cez 47cs suddenly removed from the circuit. The time constant for of the circuit represents the time requin9zb/7q4i3 i;cze cesred 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 thvr uncg3/2wvfixm),* e same 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 tli,a5i)o g*dyd5qiv: (v8dhlo an AC power supply. On this circuit, the current

参考答案:    
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. ;ygtl yx o4x:fz43 a+-hu.pyzIn this circuit, the currenty p 4x3tlg-y ; y.:+hz4fuaozx

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
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The inductive reactance in an ac circuit changes by what factor w()u 5m*my4kf z*p ok w.wex2hfhen the frequency is tripluf.xw4k*myz*2e) ph5 (fm ok wed?

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
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the frequency of thdzf l.1 )px5uie AC voltage across an inductor is doubled, the inductive reactance of )5uzd.1l pixf 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 2x4kxp( j)nxbxxlv;- AC voltage across an inductor approaches zero, the inductive reactance obxxxxn-; x(p4 vj2lk)f that coil

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 supply. In tq49:a) r2eln qm nap:ihis circuit, the current:arl4pi q nn 2a9eq):m

参考答案:    
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 b-j)6 sxz; f +kjwyd*bmy what factor when the frequency is trip xm*jb )wy+ 6z;-kdjsfled?

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 capacitor approaches zero, -(m(g b8cuh ogthe capacitive reo-h g(ugbmc8 (actance of that capacitor

参考答案:    
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 anglemvjlr-tsdh2 mdrjcn2 ve (i-- j r,))0 between the voltages of the inductor and capacitor in a Rv,r(vr0nj-ijd ej)m schl dr)mt2-- 2LC series circuit?

参考答案:    
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 6z.p7,scmk lhw :vh yrs2v1b ih,ll+2an RLC circuit 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 impedah;*,ku d ;vxx1c gfm5ynce of the circuit increases if R increases. When is this sgxuhd ;,1cyx*v f5 mk;tatement true?

参考答案:    
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. Thetycdbguzke+9 -w19 3v 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 impedance of the circuit increases ifk+h2juqw 8fe kp(g +b 8stci)) $X_C$ 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 series ci fb : zgr81dsscoly39a:m69rbrcuit, the resonant frequency of that circuit wilz699cr8 bo s rb::aysl3gd1mfl

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
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit that is t)ya5ezz yp:h wt0* 9ddriven by an AC applied voltage. At resonance,

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 RLC ci zuna2(/680 2 sdax8 kecwzooorcuit 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 rotatiny:qqf)o.: uafxt: ca6a or/u 0g in a uniform magnetic field of 0.20otfaa)cfay: 0q. u:oxqru :6/ T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are parallel.

参考答案:    
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 nzr, ae;/xk 097uslc 9gkb8 ilrotating in a uniform magnetic field of 0.20 T;ns ekll87,bc9a / kr9uzi x0g. Find the magnetic flux through the loop when the plane of the loop and the magnetic field 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 in a uniform(*6zd )r- gmgb+hdmv5u1,h jftu ds/ d magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are at an -1jumhgfm/5hu(dzt ,bd 6 )s*dgdv+rangle 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 adjustable tvh6tx4uq o8 6vz.jl p8,xur-e4a:sesingle 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 co y:ud7,nohte*il changes 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 wrz c cn3 p,b+,i4mf:bl4:tqvq ire on a square frame with sides 18 cm. A uniform magnetic field is applied p,:l4r bnvb 4,ci3pmqtz cfq:+erpendicular to the plane 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 and aen kwk3y76rk6 e1e n4an 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 and arjvz 9d.00,smt/8 ,wwip b2w zrbr7kgiea $0.20 \; m^{2}$ 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 spa av9ce6twdq8g1lfd2 2n of 60 m flies horizontally at a location where the downward component of the92led tg 2wc16 8vdfqa 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:    
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
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar tha:v;lhg,yrbtgpp /(xu+vop w+3d8y ,o t is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s ab8p gx; oy(ut/gvph,o3 bld v+,:prw+yout a vertical axis 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:    
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
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator has 50 loop(lhsr6s:5l)es1cc4q c pk5kzs and 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 100 turns of w)kct 2: mttw+oire 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:    
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 ys8j-4xiyey - w0 zw-f80 rectangular loops on its armature. Each loop is 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parallel to 0xzijy swy-w84e --f ythe 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 turns of wire of add6 ;yha0gmaw +)r3vr rea $0.090 \; m^{2}$ 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 output of 1ixw8 ng .a c4iy.5fsl7f;q,m .qsusn 62 V maximum when rotated at 60 Hz. A magn5fq ;wsg. x,f4im 6lc.qssa i7n.8uynetic 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 generator wi am2beb:t 8 kdeq5.w1r7fh6goth 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:    
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
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 r qa-r6p4rmt 0+ufw .kzesistance of 6.00 W. The motor operates 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 motor have a rggthap,2y(:al g -4hpz e22dvesistance of 6.00 W. The motor operates on 120 V AC, and when running at full speed it ay:lehd ,ggz h4 g2pa(tv-22pgenerates 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 resistan:;+kb0rv g a9 ahcd7jzjl7v*wce 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A7; 7+kjjrvda *c0w v:l bzh9ga. What is the start-up current?

参考答案:    
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 resistance 6.0 W is coq*1quhou 6o:v-kn k7*k o8c m w1jacw;nnected to a 24-V power supply. The operating current is 1.0 A at full swkcu vo-o6w*1 u8q1hj;qknma: k*o 7cpeed. What 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 res53t.d3b faoyc bhk/ jfu.4td: 65j zmkistance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speed. What is ff 3 jhtuo 3ck5j/4:y mabbd.tz65d.k 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 90zj6k:r ,mb/fdg n6 oo;)e9 wup7oxydq gza3to reduce a primary voltage 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 causes 14 A t 6jy,rb mpx*8ao flow in the secondary. How many turns are in the secondary?6*,ry p ab8mjx

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 pr gz7t;qqqy )p)imary if the 24-V secondary has zqqyt;g 7)p)q100 turns?

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 a1bgfrztf -1yfp0eti+7x y: /500-turn primary coil and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is t71f+ f1gz tyt-a /ry0:pexbi fhe current in the primary?

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
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 transf4u, jbo ub-q19c4rcdlu ,wynm+z c0d 4ormer. Assuming 100% efficiency, how many amps atlb4yn , m9q4 zuu0bujw d1o,r-+c dcc4 24 V can flow in the secondary?

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
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer provides 7500 V at 10.0 mA. Tor2o4,9gsz3g1 rki/ jo w gty5he primary rg2 gotgr5wkio 3 o sjy,19z/4coil operates on 120 V. What does 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 and 30anae yxxrva nh+)u0//23t+ sgt); h og0 turns on its secondary coil. Ih) a)yn0 +x2s /vgar;/tuhg+a eto n3xf 120 V at 2.0 A is applied to the primary, 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 turns on its primary coil and 300 .+ qtuf mp g2aa*e:y)sturns on its secondary coil. If 120 V at 2.0 A is applied to the prif+:au)yms q *tgpe2.a mary, what current is present 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 transformer has 100 turns(u)7sg zcm(t n and its secondary has 200 turns. If the input current at the primary is 100 A, we can expect the oug(zun t7( s)mctput 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 10rui, ((2rifti9bi-a8lr(6krkx q fo 30 turns and its secondary has 200 turns. If the input voltage to the primary is 100 V, we can expect the output voltage o rtr68b 3xrf-i9f rkalu2i ik i((q,(of 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 has 200 0kj2+kq o )3asa6gout h.hw6g turns. If the power inputhqo.kagwgu 23o )ht6 sj6ka0+ to the primary is 100 W, we can expect the power output of the secondary to be (neglecting frictional losses)

参考答案:    
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. Thbmyd1)hur *82:m5apa8 hvkc:7ri gipe voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total residpryp iaba2h8:gmk7c5rm*: )h8u1v i stance 1.0 W. Find the number of turns in the secondary if the primary has 200 turns.

参考答案:    
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 steppesl3iq/doyi 0g0 22d + cr7atqvd up g cto0r+qd/3l i702dsvay2i q to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
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 cur ga*po81 k izbwe5)a*m k+rny6rent at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lost *nka)+prm8wb aoz* 6 y1 5gekiin 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 linevh6*4zem- uyuuh s;;v 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 is stepped up with a transformer with a turns ratio of 100:1. What percentage of the o;ev h4vu m zyhu6*-;usriginal energy would be lost if the transformer were not used?

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
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long hasucerf w:e ;ka,::lf ,t 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 energyl;af: , rw,te :eufck: is lost 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 line at 1000 V. Ho dyvny(3vg f51 sj8xt-w much less power would be lost if the power were transmitted at 3sg 8yn-vjx (dyvft531 000 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 A. :kbp:7sc 5 pvkw/g*v aIt 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 not to exceed 0.010% /vg:vp*kpwk7bs 5 :c aof 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 cujj w8a c+-pytodm5)f4 rrent of 5.0 A. How much energy is stored in the coil's magnetic fiel8t j5odmfaw4-yj)c+ p d?

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 c8cz91i a sgl4usbkix: :9tv h/ontains a 6.0-W resistor and an 18-H inductor. What is this circuit'a9s1h8gz sl:bv9:/ki4 uic xts time constant?

参考答案:    
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 circuitm* pbx p-f1e 50fk:zyc where the rms voltage is 120 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
97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed ini 9wrr .xg0r9xbji(/ix f2(anto a 120-V AC outlet. What is the peak current?

参考答案:    
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 into a 120-V AC outlet. What is the resistancd /fis489 t4hv:obra ue of the lam sb4u f9d/ 8othav4:rip?

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 to a 120-V ac power supply. What iqe 7 qusj-;-jts the peak current -;q-qe jtjs7uthrough 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 to a 120-V ac power supply. Wn2a/p9t7v jnbhz 7st0hat is the power dissipated in ths70zjvt/7p an n29bhte resistor?

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 50-7.e ;11lo xbb*kvfyd6jv szo+cv im/6xl/dl; W resistor 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-Whrkaj70(3 y9d)g( dpsb 4myp h resistor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

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
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-Wy m yqp6bay.m1-,r+1gsg 6mgc resistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
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-mH0byi/se5 c)up inductor at 60 Hz?

参考答案:    
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 reactance of a 2.50-mH coil at 1000 Hz?3yux 5r/lgdzde -+iblu1(:vo6 k w 8sc

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 o w*d8c 1 73ealvvz.0exk*eiy a 14.0-mH coil have 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 necessary for 157 W of inductive red*8so ju 55x w fzt; e,,fimy,ark8q,bactance 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 inductor when 12tz c7:u/e)m4 m blpopmi:j0d 80 V AC at a frequency of 20 kHz is applied to ip/c d)l o:b0tmimum4: z8e7pjt?

参考答案:    
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 tls /riw3 5q.bx 5txr1through 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 c qv f0)e86;ks+f6 t-ivq cjhp;k/s1j qw2e fha 4.7-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 to have 50 W of capacitive r8 nzn2oz9 3j5ttu9 psrkm l6j;eactance at 10 kHz?

参考答案:    
标记此题
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency doed86 yueee (l8 b6pz1 hv :.:ydfrk2joos a 10-mF capacitor have a reactance of 1200 W?

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
113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will the capacitive reactance of a 0.010-mF capacitor kdwd3s,5 kq(ny*t-v + e7rx:vf8r6o5eewoi lbe 100 W rni*8eqfx5oesed vw57lkvd 3 6:ky,w ( or-+t?

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 through a 0.4vrx.b8a 9f ghu/ nsf;0010-mF capacitor at 1000 Hz and 5.0 V?

参考答案:    
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 bqp xyi/6l-4m11)+h udohs0y rq.fspac series circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reacty 6hx)h4pbu-od+0ypss l/q. rf11qim ance?

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 imsz;ay gy/9t+cyr 76ovpedance at 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor aresy+rt9v oa;gcyz /7y6 connected 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 at3f /d-jkq2rxhxwly06 -k q 1yy 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacijdyxk1k-qq ryhl- wf6y /x2 30tor are connected in series?

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 connected in series with a 20-mH inductor, what is th)n swyiilp7r. 9o lx,*e impedance at 1000 H r.pil7i* x)lwyon9 ,sz?

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
119#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is connected in series wi w6ocao1t w(mc9045l i2ogfhhth a 20-mH inductor, what is the phhc 9o0t g1oc 6iw2a lh4fo(wm5ase angle at 1000 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 8-++-hbcov6 lyi82l3bhbpl: dz atf6hghb( x a 20-mH coil and 1.0-mF capacitor fora x+ hlhzot(y-bdi2bbf: 83pl6v h h6g-l+8cb a total impedance 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 capacitances is needed in seriev:n1kzmj zncp-lp3d)n7, tpga--/ nvs with a 100-W resistor and 15-mH coil to get a total im/ jnlvn1npka7 -z pzg 3:dn)c-- tv,pmpedance 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 sel (qkdj82gs *cries with a 450-mH inductor at 5000 Hz for a total impeda q*c jlksd8(g2nce 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 t-s9xst(4xqzckbiig2 x1q -5put in series with a 100-kW resistor at 1.0-MHz for a total impedance of 15(9 c4z-1ix2si x5q tskgtx-bq0 kW?

参考答案:    
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 conne1 *1z8oe +:bkogpu*gd3 saed+nd r e+bcted in series with a 20-mF capacitor. What is the impedance at 1000 srae ogd up de+:3e*bngo81*kb+ d z+1Hz?

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-n /ak yyzed ;u;;(i6gomF capacitor at 1.0 kHz for a tota za(;goikny;d6 uey; /l impedance 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 serq-qp5g0 (s.mfi ga1 keies with a 10-mF capacitor at 1.0 kHz for a phase anglei(1qpggs5 q fm.a-e0k of $40^{\circ}$?

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 in series with a 30-W resistor at 1.0 kHz fr wsrwt8blhlu4 zs0lu.9 dv ,4*p20eqor a total impedance of 45 *ld.w 2 su vrr40pu bet4sh9,z0lqwl8 W?

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
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 capacitor at 120 Hz. What is the pm-9si, s mc:tkhase angle?9,ci kmms :-st

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
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, anp(6g4xa st-ig p gaxj6/h2wc 1d 1.0-mF caapsgip4xgth621 wg-x/(ja6c pacitor are connected 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 consistsu prg m9o,l5/wn:kd tthrn,72 of a 100-W resistor, a 10.0-mF capacitor, and a 0.350-H inductor. 7 r5ndtwmtk gohu/2l,:p,n9r The circuit is connected to a 120-V, 60-Hz power supply. What is the rms current in the circuit?

参考答案:    
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 capum v+ mdx8/gjr8ncw2 1acitive reactance 30 W, and an inductor of inductive reactance 30 W are connecte+mc8mw8rn x2j1g uvd/d 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 sjcn *g -n(de4/zo) pfzeries RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45- j(zdf)*/ 4ognzncep-H inductor, when connected to a 60-Hz power supply?

参考答案:    
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 resistor for a phase angle(/fmclw ,+-e7e vgqcb of cleef7c-m (bv/qgw+ , $40^{\circ}$ at 10 kHz?

参考答案:    
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 = 10.006:l,1ohve q ezerqs1 mF. At what frequency should the circuit be driven in order to have maximum power transferred from the vrlee1zh:qqe0,16 so 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 outputm g3u*x, a;fl; onoyr7 in an ac series circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 120-V power soo *x3f mr7yan,u;;lg upply?

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
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an ACwjcwvy 1 31r;; uibho;-ueqk0 circuit is $63^{\circ}$. 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 6 :7s zo- ucw01gg) ,ttidsni-m0 W and a resistance of 30 W. What is the pow os7n,-sti: wt0c1giz-gdmu) er 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 circuit containing)cf5.plre i-z8:m *dp mvc cb3 a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor)mzp-db* 3.v cpc5: cf8emirl, when connected to a 60-Hz power supply?

参考答案:    
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-mF capacitor and a;uyghx )n97 :iiea4 px 15-mH coil in series?ip;y7xi:94 )xuha e gn

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 needed in series with a 4.7-mF cap (2 ,-/nn loguhuhgn*tacitor for a resonant frequency of 10 kHzo2-gu/,n ht (n nugl*h?

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
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 inductoar8p3z cd9khou+u.p 5 qc3fb-s z09zzr for a resonant frequency of 1000 503kqzz3zr-shzu.d f9 boc 98cupp+a Hz?

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 plj6qnv ( c+m4y;4c*7ezqipy5st s1imust be placed in series with a 30-W resistor and a 40-mH coil if the resonant frequency of the circuit is to be 1000 plqcyns7 izq;j4i cs1y4e6*5v +(tpmHz?

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, 2025-12-10 10:15 , Processed in 0.734980 second(s), 305 queries , Redis On.