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
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 80 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；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。本试卷的直接作答链接 https://tiku.one/test80.html
 作者: admin    总分: 142分  得分: _____________

答题人: 匿名未登录  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 flux e6c dmlk1e rzh27 ek6y)xcept

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 induction stat0iy;tf4li :lq3spy2j es 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 coiwiib+v,nc*o0 * iqydd xrjg/7+u77) c;k q tbil produces what kind of change on the inducjt+g7b/dk nb7*q*x 7 iiicd; yoquri +w)c v,0ed $emf$, 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 of8n2xvp/ lilxnj- v7 3s wire produces what kind of change onn 2 3inlxxjvs-7pl/8v 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 am 8s.oy*n is0otb:0bi loop of wire produces what kind of change on the inducs 8itnms0o bio*0:. byed $emf$, assuming all other factors remain constant?

参考答案:    
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 4fyq 92jxacgyx5 d/k .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:    
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 dilt5wb* c a6 dxc 5q5k+api5g*wrection of an induced current in a conductor will be that which tends to produce which of the followinc*q wb pt* ixw5+kl55a gd5a6cg 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 horizontal tabs-suy9zm t5n +le. A bar magnet is held above its center with its north pole pointing down. The stzymnss5u9- t+ationary magnet induces (when viewed from above)

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 a horizontal table. A bar magnet is he (5-*2es9kp+wf hjs i*rrjp fgld above its center with its north pole pointing down, and released. As it pefjrh -9*j(wp2g srfsk+ 5i*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 kph:hh1d k6x n2e-w9wthe magnetic field vector points straight up. The magnetic field vanishes p w:dn6h- k k2hexw91hsuddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 reg1r7w) jnc,cr yion where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what 1nrwc) r7cj,y 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 tab vdfcz5 53f+h7kdg qf)8b2bc a*j8a;aqzdx9 tle top in a region where the magnetic field points straight dowg8a+v59cc*z)tbqfdhz dax d 2;53ajf8 7fkqb n. The 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:    
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 ew7(r;vpai3 ay5i+qsqver-increasing current northward. Two coils of wire lie flat on the table, one pq7yia5 3v(ai;sqrw+ 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.:nyy0tc z6 f9h0mwgq loop of wire with the north pole entering first. As the north pole enters the wit0m wy6:zy9cnqh f 0g.re, 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 abouc4j zz:7cui9ut an axis whose direction can be varied. In a region where a uniform magnetic field points7j uu:czci49 z 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 wiref3l7 jgg bqhn ceo0 kyz2(4/-x is rotated at constant angular speed about 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 induc(0b z/7 ck4-23hnyg qlx gefjoed $emf$ 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.mgm7sn90zae ,k3 w i7;v wkq/z
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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 anwnycz 66g tsx62).an p $emf$ 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 magneti 0l luktg2f;+gv )-twjc field. 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 t/nr z .x;1skrmhe east-west direction) is moved northward at constant velocity through a magnetic field that p ns/z1xkm rr.;oints straight down. Make a statement concerning 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 atwa9hdm9ldb l6,z;, cs a 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 generator transforp c3efuub. rb1*,do 3wp*ku9wms

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 rotatkqspo712o9iy3l njjvb6 . bap(v 8f)xes through 60 revolutions each second. The frequency of thj6yof2b1sn ib8apk vx9 ) l 3jo.(qpv7e $emf$ is

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 9ub2nfr dw4f6used to

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 devic, bl nw66mkwkh w7l9a1e that

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 conie*)t.+ qtd dw)6b wyjtains more loops than the primary coil then it d )+t6 w.eqjtbyi*dw) is a

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 lq1sppye7gvxvo md*i 2ps (mt,, ;t/- coil then it syt2q(tm pevxi/d71p-,o,l*vg pm s ; 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 power inp-nyg*x n/fip4 ba6o+jut

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 c* ltaca2b*s6ea: j-t tircuit,

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 ideal batt4uei m7jz/( ytery of constant terminal voltage. At the momtu m74ey/(ji zent contact 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 co(b0w nx7v+.h8faxe wv nnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the induc+w(fn7bx wv8 0aveh.x tor 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 resistanc*zz(am +vxnie2deh,t 60l)kde 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 indut4 ;p dz2pb0tjctance L and resistance 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 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 battykr8qv1hgp; 3ery. The time constant for the circuit represents the time required for the current to rerhqkv1 ;y3g8pach

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 seriendk 7nbudm*b:2m0.ph s to a battery. The battery is suddenly removed from the circuit. The time constant for of the circuit represents the time required for the current 2 b*m bdn7hm:.0pnukd to decrease to

参考答案:    
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 same uhz:i89pf e kh-nits 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 connected6y4s ;bafyda+8e oe n)k+db.n1ls li, to 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 p.ml 52zd e5ey9i (yoggower supply. In this circuit, the currentg go.(m 2 95e5ezlyydi

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The inductive reacta vy5t-pmr3f xbz p0,phlnq01 9nce in an ac circuit changes by what factor when the frequency i3rp951l 0qz xmp0 -fy,pnbhtv s 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 9u*cgn c wd6)san inductor is doubled, the inductive reactance of that idc6g*nu9)s cwnductor

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 voltage across an inductor approaches ze o 3vy+jxcg8 b:degbcdo+6 ;:dro, the inductive reactance of that cdx+obg 3 cgjd;:8b+ce:6vdy o oil

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 cjyjh.:,oc32p vzkwtzc.2)c o onnected to an AC power supply. In this circuit, the current)ocjz.,w 2oy :2 h.tcpj k3zvc

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 circsrxnf x-b(pxl /96 a6duit changes by what factor when the freque96lxxap d 6n -xb/f(rsncy is tripled?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 appx8 j.6zk9ujss t 4aq7vroaches zero, the capacitive reactance of that caau98z7vk tqxs 64.sjjpacitor

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 angle between the voltages of the wa7v v124gquh5 zli) pinductor and capacitor in a RLC serie ah4 vplv5g7uzw2 )qi1s circuit?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 *,b;8,wiulgni .fur ecircuit 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 impedanchyvzq k6 3ir*,e of the circuit increases if R increases. When is this sik *qv,z3yrh 6tatement 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. The impedance of the circui22zed 72q+j*n emcxh n8wg; rht increases if $X_L$ increases. When is this statement true?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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. Theu*8q5er *afya zvt 10b impedance 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 series circuit, tw9r/uwwcvi*/cm /f6n2a+ ys lhe resonant frequency of that circuit wi/ /w96r wav/*f+ niclwyc sum2ll

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 volta-r.-sfdd ml4whn,c( o ge. 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 circuit 5 es zn4xoz7i3occurs when

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 u+p2nzpju uhw 42qv1ux:y e rw+k/;my9 niform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic fielqwmp +ur :4+ 2xyvpy;kz h9e/ wuunj21d 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 rot3fd ylm2a48(*oy ye.z5ax dm lating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop amdy4(zy.la8xoe ydl3 52f*mwhen 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 tr1hn;6(dm-abk ulm *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 vectortu ; rhkb m(1mdl6-n*a are at an angle of $30^{\circ}$.

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 5dzt.7j:p cfiof an adjustable 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 c1l1tjv gkvf f*7ry/ v9oil 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 wire on a square frame with .lmfzh72jf cwn 1ge50 sides 18 cm. A uniform magnetic f jlehzc0w5fg 2m.nf 17ield is applied perpendicular 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:kro3 5u d,suk,n7bxt 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 and m3g ggc7es/(6k2b9o v 6eix ntarea $0.20 \; m^{2}$ 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 60 m flies horizontally at a locatr1my +81 tykq8xu(kg yion where the downward component of the Earth's magnetyy k8(t81+ xurgmq 1ykic 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal basb0 (( 7atjjqwr that is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a vertical axis through one of its ends while in a atjqjwb(7( 0s 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 loopmighqvjjj-48o) 9i b( s 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 n.rd oq.6jua/100 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:    
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 rectangular l epd s(mf;in73oops on its armature. Each loop is 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parallel 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 ;7mpf(ne 3ids 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 are cx sedh+ ./v6zyq-mmc) x2p*(nd*laxa $0.090 \; m^{2}$ 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 ouzaxf yv v +ev091s:8irtput of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is available. If the ar1v sxy:i9vz rafv08+eea 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 geneuepcbdl;adf,;d 4+m ijft ./+rator 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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/rlfejd 711u w 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 f/jp/1m0r5 o z o7- .szk cypqof2f;upa resistance of 6.00 W. The motor operates on 120 V AC, and when running at full o/rjopcfso7fp 1m2;zu/kyf - p.zq05 speed it generates 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 resi:(4 uqu4pnyyk1tp8c e dc* :tkstance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A. W*:(18yctt 4 dkkcy4p qun:puehat is the start-up current?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 connected to a 24-V power s;;, beptrknjvo .3e52*z(bvioesoq 9 upply. The operating current is 1.0 A at full speed. What is t;,or2 okbp viz .eo5*tj snve;(e9b 3qhe 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 resis2dq 6fzm5.k kitance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speed. What is the bakqmd25k.fz 6ick $emf$ when the motor is running at half speed?

参考答案:    
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 voltage of leokq ( pw:)061hv ze4uydd6o$120 \; V$ 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 traw q/vi(ss1o)kfeo ; mwq/d*f,o)g u7pnsformer causes 14 A to flow in the secondary. How many turns are in the seco,d;oqv7k)sq u/*/ m(f fwiooswgep ) 1ndary?

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 arpiu5p 1+ qxhr:c53cx te necessary in a 110-V primary if the 24-V secondary has 100 tu51 xpphucqtir5x :3c +rns?

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 500-turn primaryn6 r/i6x7yg gf coil and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is t6x g6/gir f7nyhe current in the primary?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 i7yhptgjsm;.6 f/7 vlkn the primary of a transformer. Assuming 100% efficiency, how many amps at 24 V can flow in the secoymv7 ;p6jtg hsfk 7/.lndary?

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 a -hj pmhs+bt *e)t c);j yt3(utemc7f( neon sign transformer provides 7500 V at 10.0 mA. The primary coi)b+(c ;e ym- *)cjt7mpth3hfttsu (jel 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 l(nnji1f.m 7qmnbtivi8 5s; 0has 60 turns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to.n ( nmm8bnlv t1ifij0i ;s7q5 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 anyb/u5q8 th12 zw.mjsud 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primazu. sqw 12/ jb5muyt8hry, 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 and iwlj0 ld;28w slnfwcr 23 vvhmb1q.4u(ts secondary has 200 turns. If the input current at the primary is 100 A, we can expect the output current at the second21fn8d lsl3wl4hwju .(v rv 0 2mbq;wcary to be

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 20f g4cvk.;6dyv);s) 1 ygu kgmd0 turns. If the input voltage to the primary is 100 V, we can expect the output voltage of the s) dv4s v yf).;1kumgc6;dgkgy econdary 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 turn,et1xh(dv cv+3w7tal s. If the power input to the primary is 100 W, we can expect the power output of the secondary to be (neglecting ,h +7ce13wtl (vxda vtfrictional 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. The voltage is usuall2t nfg /zd0dnwr., ol5y stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the number of turns in the secondn,2 5d./wr0zglt fno dary 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 k:-pxw gm 2n50(brwue 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 in the transm0: uew5mx p-gk b(2rnwission 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 current at 120 V. The voltb:q.9f 6x c nrthow3.oage 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 in the transmission line if the voltaget6xq3f9 r:ncoohb ..w 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 line 50 km long hau3b7d; ip7rbi0oju 1 qs 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 tb;7q jui103 7obudrpihe transmission line, the voltage 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 long has a total resistance o* 5fh6y9j1ftes zg3fwf 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 lost when 3g*ef1s9z y 56fftjwh 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 1 -5osyd lve8 6o*fhnu3wf50weayzr(6-W line at 1000 V. How much less power would be lost if the power were transmitted at 3000 V instead su n5we 6ff 5 e1l8yow(o3yavhz*r-d0 of at 1000 V?

参考答案:    
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 4 4( 90fgtoqxfm40 V at 20 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 not togxfft9q m4 (0o exceed 0.010% of the original power?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 carries7t7yi+n s63iwm4v0j pt0wkwu a current of 5.0 A. How much energy is stored in the coil's magnett4kw0ywvi7ts0n7 6jw + muip3ic field?

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 resistor m nfg4w0zb)t4 and an 18-H inductor. What is this circ fmz)bntg4w0 4uit's 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 xoxi/jv; s6h*sw,w fz k0ab2pwng9lu 0j3*3 r circuit where 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 the peak curreor (1c 18kdtmint?

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 resistance op j54dptrq zid38 *u*jf the lam4d5j**pz pjtqu 8dir3 p?

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 connecte0s6:xlovb(-4 c rwtq gd to a 120-V ac power supply. What is the peak current through the resistor?lvqrg-wcxb0 : to46 s(

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 t , 9lhbkp0) zqc7js0ywo a 120-V ac power supply. What is the power dissipa j0)wk 7,pcqbh9z ysl0ted in the resistor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 9s9hatl5luzk-3+) ns0 ugbitk9j;w cresistor 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-Wf0ro c1qx9 fq- 0ptx8 5amsvt3 resistor 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-W resistor is x ubz vl8a tp8uej..zfp-6y3 9$I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 afa5rv8a.mlg 8vu8ay rzf 4.4rt 60 Hz?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 reacta*l8 avmtn*61o c 1lt5zct5y0p nx)aotnce 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 havbzc11 dd ,mb .k1f4glne 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 o+yiz h: sgi54o sdn.9rf 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 inductor when 12sn :hk-7f7cc 5kqo 4fet3j 3oc0 V AC at a frequency of 20 kHz is applied to ek5jfks:7cq7ct oc -4 h3fno 3it?

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 through a 2)mn+ fchh:lyp;(u2h x9 dgb c2 ft/l.)cc,i ox.50-mH coil due to a 110-V, 60.0 Hz source?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 4.7-mF :xpj(l8/jd rkf 55 kkucapacitor at 10 kHz?

参考答案:    
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 Wo(hn cqf9yxj xf.d1x8x 6n x.* of capacitive reactance 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 does a 10-mF capacitorig-lv rv;ex:)wzs :e;(zr2q g 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 will the capacitive reactance of a 0.010*jr) 9ww2n7b( , kvmn0wdv uzt-mF capacitor be 100 W k0*dr wb( ,9zt27nmjvwnw v)u?

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 0.0010-mF capacitor at 1000 Hz and12*mgaxp,,z)z/z)ezxe vbrjv9r;m t 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 ac series ci/tt5 -sujcedd.s) r/prcuit with 12.0 W resistance, 15.0 W indutd/. pjrdsc5t -/s) uective reactance, and 10.0 W capacitive 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 100n/3p,v 4/j zoa ;ebkvu-W resistor, 20-mH coil, and 1.0-mF capacitor are connected in ,au4kpbov/ v/j3ez;n series?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 at 1500 Hz macl1s(d - * ynd0z1qnif a 100-W resistor, 20-mH coil, and 1.0-mF capacitor dmdnzny1-q1( c al0s *are connected in series?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 the i )hxaurrzx)8 6mpedance x)a 68zxrr)hu 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 connected in series with a 20-mH inductor,ovep;t)ndl3(u+4rar d dib6 , what is the phase angle at 100bd,6npor4i3)vd(l e art ;+du0 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 needffw pn.p8 kvv-;s4vq ,zxsi**pg:wwia. j7x9ed in a series circuit with a 20-mH coil and 1.0-mF capacitor for a total impedance of 100 W at 1500 Hz?* afiwkzss,7 9 p;8- vnx.pv v*fig.wjq:4wpx

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 series with7m3rg6ncj ew6ykxy.3 a 100-W resistor and 15-mH coil to get a total imp73g6mky r6wcen j x3.yedance 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 with a 450-mH inductor2wmif6f: pg 5* cs v7sx+mwmw, at 5000 Hz for a total impedance of 40000 ss+ m p5w,:ig 6c2xf mmwf*7vwW?

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 resisx)5zyi;wt48z g+l5 o l1asvwrtor at 1.0-MHz for a total impedance of 150 av8l ry;w1g)sxozt 4+ iwl55z 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 connected in series with a 20-mF capacitor. What is tk 6cs+b+,nnc g+ wx4pdhe impedance at 1000 Hz? gwcdp4s,n6+n x++ ckb

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 w7jlz;gyh ma *-ith a 10-mF capacitor at 1.0 kHz for a total impedance of 45 agm*h y;lzj-7 W?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 (ey);9jd/ pv 2ux6mkl395ewi erogh kin series with a 10-mF capacitor at 1.0 kHz for a phas emo5 p63 dew/)ex( y9ikju;kl9v 2grhe angle 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 for a qc , sd)gumh0.total im,c0 q smhgd)u.pedance of 45 W?

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 capacitor 9sh;otfq09c qat 120 Hz. What is the phase as9qf;h9 tocq 0ngle?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 15kf 6o28/dro.oc4 b fkw00 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connected wookfrd fo4bk/82c6.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 okp 2uf(pw zinpy:d00htmc)s11lc 47af a 100-W resistor, a 10.0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 1204ct1id)lpfy 1caknh(s 7u 20pm: w0zp-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 capacitive reactance 30 W, an n : x wgd*mf/s:am3v1q-jk,j+miybh (d an inductor of inductive reactance 30 W are con b m:x: *dgwynj m-sim vh1jf(+q/,3kanected 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 circu2h3 k.hpq.p4yh8zp* r cy 2qupit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz power supply?yzp hqc.3 yqp p4*2k 8hpurh2.

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 wwg 8to,v7i 18d5wak tin series with a 500-W resistor for a phase angle oi 1gwwawv, ok7ttd8 58f $40^{\circ}$ 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 = 10.0 mF. At what fre)skq 4c0/0dg u5vry kuquency should the circuit be d04rv/u0 ykku gs5dqc) riven in order to have maximum power transferred from the driving source?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 Wgf1/wa+e 0t tqcn) rh; resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 120-V power sf+htq0;/t)g 1craw neupply?

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 circu- iywndj+a18nnuh4 b fo,j-9cit is $63^{\circ}$. What is the power factor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 adf8 ed+h7-kpz l:a r g/9x-wlnnd a resistance of 30 W. What is the powe g-f:9lz/+rdedp alw7xk n8h -r 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 circuiy4ghfs du* 7g 6d;pi;nt containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, whes;hg;fg*74nu y6i dpdn 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 zt4w lw wjilx(zc+z4v,j/ e/:1.0-mF capacitor and a 15-mH coil in series?zz,wze+/w xtj lw4j(4vl:c/i

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 yz7p ) bemds(91sb;ard o3pd4 a 4.7-mF capacitor for a resonant frequency of 10 kHz?b1 pdesr dz4 dbp)ys 3a7;m9(o

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 r/lq/vd-2t ko4bf1b+ta ic:b ( 3s,si c lxj3sa 3.7-mH inductor for a resonant frequ3lc1bkr3ob4 vb:qs /ldi js-t as /+t(f,2xciency of 1000 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 must be place 89vkfiwy5 /jwm k2pb+d in series with a 30-W resistor and a 40-mH coil if the resonant frequenbp kwmjfkw5+i 2y9 v8/cy of the circuit is to be 1000 Hz?

参考答案:    
  • 答题人:
    •
    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
    本系统支持习题练习，作业与考试三大模式，作业考试自动评分，成绩排序一键导出，可设定动态变量同一试卷千人千题
    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!   © 2024 题库网 (https://tiku.one)版权所有

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

    GMT+8, 2024-7-9 08:03 , Processed in 0.669203 second(s), 306 queries , Redis On.