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 u3yh8;ydb z1hdjdt/5 enits of magnetic flux except

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
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induc;wa, y5(worauo ,gkjwf// (oltion 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 w q6ud(ggdvu d,z5k6wabpz3 .3ire in a coil produces what kind of change on the indu g6vqz3,ddag d(w5 pzk6.ub3uced $emf$, 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-zq7 z6/bb qwl loop of wire produces what kind o b7b6 wzqlq/z-f change 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 produces what kind of ch ly1kc-,y1e:) t1pu0rubt/c8dz xf kr ange on the induced crk 1ezuf ku)8/t0 ybd1pxrl-1,cy:t $emf$, 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 frow iusk.o 1vd lj)8ch0 kb0iq+a y4x:/km 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:    
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 cu n l;wdhb (e/zjx-q*;,bme,,ttgnu/ frrent in a conductor will t; e,tzbqg ;xnw*,h/u (lmn b,d-je/fbe that which tends to produce which 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 horizontal table. A bar magnet is heldqz+p4x3 81ofzs zmalm bojyr94ei 3(9 above its center with its north pole pointing down. The stationary magzf z3lo 8s1 rie4(zb3+j4m9py9mqx oanet 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 a horizontalk s abp.:t(f k-(l5gtcnse;8k table. A bar magnet is held above its center with its north pole pointing down, and released. As it approaches the coil, the fa- ek(;tsbkk: (a8nf5pgsclt. lling 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 regiovn:ug 3/ 6g 0p z8r2xqshjj.j 1psme*on where the magnetic field vector points straig*o.gj/nu v8ps2r0ejxmp 63q1s :hg jz ht up. The magnetic field vanishes suddenly. When viewed from above, what 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 field vec-bf2 bqzc 7xw,w y2, jz4r*jpgtor points straight up. Th rc2p-xg2 ,f 4jbbj,zww*y qz7e magnetic 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 in a region whe ;m 4w5xt4yfuvcy0u7 a9vd)co re the magnetic field points straight down. The magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current in this coil as the field disappea0cvyfty 4)m ao;u74w5 v 9cuxdrs?

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 7 kdme3ib)n7q horizontal table and carries an ever-increasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed frm7bik q e)73ndom above, the induced current circles

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
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 north pole entering n/pqgc ;*m*isph o1 ),)susei first. As the north p* cmi s;ns1oie )),*s/gupqp hole 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 co3x.;k dnxttt gwvr380azm*f9nstant 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 i n 3f0gt 3 x8wz.ma*t9dtxk;vrnduced $emf$ 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 at constant angular speed about an axis whosl85(j1g.o s o, wz .fztbyl1pup(ucg., i4 mmwe 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 indu ispy1mc.g(zlgb ,z(o4w1 5.ut f8pu,.jmwolced $emf$ 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 sgea0;-k4d: mr jm9q
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 antj:cnz6ctft4l wpg+ 886wca . $emf$ 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 magnew3xt6akg5zx *bhc -m2tic 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 (orientzb,e*qvhu x9pu 794vped in the east-west direction) is moved northward at constant velocity through a magnetic field that points straight down. Make p e7*9b4v xzhuu9qv,p a statement concerning the potential induced across the rod.

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
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar rotates at a consta qhi4qlni;8a tg89.flnt 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 a+yljr38jq6sm+sy; s 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. The f.fhurbe( y825 ga5yzgrequency of the uby525g ( yfehga8r. z$emf$ 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
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device :0sfhgl,e g8l4gqc e0f 5f -wyused 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 device52y*-l;mk iov)jqs ax 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 prpb() *9ew kk9hx kxt,qimary coil then itk h* w,)x kp9t9qek(xb is a

参考答案:    
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 y ;.khn; s,0d de0fads:b;cej t+ ;gnqc4p0ss secondary coil then itsc0tn;ds4h; :fba.q+k j;,s0d np0; y dgesce 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
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the power ibe uu d,:*b.hmnput

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 vl:7(tku wlbww2c/1c .xh) r qcircuit,

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
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connectedp/.s2hn 7ecp 8ae0s2 h.uclxp in series to an ideal battery of constant terminal voltage. At the moment contact cl2hhs.a0p.n7 p2/ c8seeux pis 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 induc9ecotl hlk6 n- 9yi/(ptor are connected in series to an ideal battery of constant terminal volta9n - eiy9hctl/(ol p6kge. At the moment contact is made with the battery, the voltage across the inductor 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
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 codgwd; wly5u(f9 w;4me jz;jo2 nnected 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
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 resistanceorp4k lh s16c3r/ ail7 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 o-*bh .d e-nhpfp fi9,to a battery. The time constant for the circuit represents the time required for the current to 9. fiefndhop-p-hb *,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; th8wznzku c j20v0e- 0nqe1ewh6r+h in series to a battery. The battery is suddenly removed from the circuit. The time constant for of the circuitr068jh0enwu-k 1h n2tzee w0ch +qvz; represents the time required for the current 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 units exya m yh(mmb4*gg 1 u4cw4+c,rncept:

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 an AC power supply. On wz 7f 6a36;8 wboffn* lmfoez*dg)ug9this 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. In this om udod8m wh14 )zd5.+if.ggrcircuit, the currentm4.+zmo )i hgo851 rwddufg. d

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 circuit changes by what factorn0nn6tt i9+r : j9ny/ioptj7eis1s-q when the frequency ip e+rqo0i/t1n-j 6:yn9 9jtstsi n7 ins 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 voltanmyihp49/d/ yqd60k vge across an inductor is doubled, the inductive reactanmd/0p4hn 9q yyv k/6idce of 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 voltage across an inductor approaches zero, the induc f spvp1zc/l00tive react1lsz0cpv f0/p ance of that coil

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
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+02 0zm tjt; lue tjoi;kqcr-.u,u (in power supply. In this circuit, the currenuljet;kc2;-qtmj no i .0t ri+,0zuu(t

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 by what facteh+6c2q-skr3 ce+t 7+d b3obdp fb+pkor when the frequency is pb2 cbedkpqhs3-+t+o3 6be dc7 k+r+f tripled?

参考答案:    
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 approa jajn6it2 zw68i6d 0uhches zero, the capacitive reactance of that ca02j66 znidju8i wh 6atpacitor

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 inductor and capacitor in/xqv d(o4r) f)igg*-sij) vy h a RLC seriesi/so*gr4) x h)q(fgdyv-vji ) 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 an RLC circuit is definu s/b /e2les7ked as $\cos M = R/Z$, but the phase angle can also be calculated from .

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
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 cirmfw2b)5 * u gnpd(nfq,cuit increases if R increases. When is thisnqf m5,d*)b(2 f ugnpw statement 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 7e-t4ex0zd+7oie m6/ ebf hi ccircuit 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 circt dl97o3ymji-w8d z znfa: ;u,uit 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 b,g667y9bw (tyvqjxg eoth double in an LRC series circuit, the resonant frequency o6 ,qe(v9ytjwbgy x7 6gf that circuit will

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 q 5qsnm.u 3enc 2u*fusy;d584 n 6mvayis driven 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 cirtq5 6hehn:z s;/emx 0kp4 ,sstcuit 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 uau4sb bubm)5 97mo92sep s c4kniform 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 paralo) 9 m4bap57uss sc9 e2b4bkumlel.

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 ra p iqz2i+n8(ltdius 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux thrq(zit8ip l2n+ough 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 r(vowbfs /km/9fqe -66 dpf s**jq leo8otating 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 field vector aredlv ef/wf 8j *mb6qf s*(6pqos9e-/ko at an angle of $30^{\circ}$.

参考答案:    
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 adjusta8:9 k2awbbvdm9fj z(ye. sn 5pble 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 cc6z7(u zw) ebd9c;dgfhanges 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
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 ttz-olgyp n4k+- i7h*square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If the fnlpt4gh -+o ktyz-7* iield 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 an area i1+seqb- jh1rof $0.40 \; m^{2}$ 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 areulxk/ uaj6l /+a $0.20 \; m^{2}$ 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 location z5mjya u72e1xaa3ct+us8qz)where the dqz5auajet a2xy 7m)3+1z8u scownward 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 th ) d7mbfn4rlt3at is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a vertical axis throu74dnl3 tbf) rmgh 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 loopm:3f hxsj-scj *fs95ss 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 consisejbh4.j b be*a6e/qlu7upi4 : ts of 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 loops on its armature. Each loop i*stj,apqrq8qzkj7 8g 2*ykeu 5+v-hds 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parallel to the long side.q8 v*ktpeq-s*d,+ zgjh7jar5kq u2y 8 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 cq xhrn42. 3la(is+aj*aumzwa/., p oof 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 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 8vo5xfivxf8ma h p60 :to construct a simple AC generator with an output of 12 V maximum when rotatva ofhm8x6i0 v85pfx: ed at 60 Hz. A magnetic 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:    
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
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are designing a generatoroh5suk80r .p p/0hybq 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 operates o2 ,zxe r:-rn+ u)jvpxhn $120 \; V$ 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 resistance of 6.00 W. tj5x b3tm2zc9 The motor operates on 120 V AC, and when running at full speed it3jz xt 2cbt59m 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 resistance 6.0 W issp3w tp1,a 4;nljy)k- go qva* connected to a 24-V power supply. The operating current is 1.0 A. What is the start-up current-pas*wj;k)1n, 4tvo l a3pqyg?

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 resistanc hm rb 9302si)fx3vmyne 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speedyv9 2b xh n)m3ri0s3mf. What is the back $emf$ when the motor is running at full 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
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resis(qnfyhwk+ w9 r2+t9oa tance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speed. What is the9+q( k+aw2 oy9ntwhrf back $emf$ 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 transfor qf(2cz z qa9-nc9w*hamer is needed to 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 primar.i t2 ywt;rr9 (bw;wobtyj*(2gid.q8z e huu( y of a transformer causes 14 A to flow in the secondary. t((.qw.2yu;w ijbtzy d; (8h*twrb gi er9uo2How many 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 11268a-m: 2skdk u, a4gevmvgh f0-V primary if the 24-V secondary has 100 tur 4amg u62ekvs:mfd-8v2gh,akns?

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
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consists of a 500-turn primary coi4y-4 xqmftf )fqs0f:hbu5 g*ul and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is the current inbq0f - uftff4 h5qg:sm)uy 4*x 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 transformer. Assuming 100% e pp7(z1wmnju xs8z9w x+*b1 dcfficiency, how many amps at w(z7*b1pj sxpm1x wu c8nd+z9 24 V can flow 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 a neon sign transformer 52biy,uecul3 j )g1cvprovides 7500 V at 10.0 mA. The primary coil operates on 120eu g,iu35bvy)2cc jl1 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 onbyx)uhk6:/ba) 5s zh e6d4bmh its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what voltage is presenhxyeh s 5a:b6hk)m)4/dbbz 6 ut 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 primai5ck0c 071trnx7qj mx ry coil and 300 turns on its secondary coil. If 120 V at 2.0 A is jtxr mkxc qnci501077 applied to the primary, 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 its secondary has 200 turns.c60lr (oiqgs / If the input current at the primary is 100 A, we can expect the output current at the qrgisl/0(6 co 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;/bbn e2 ya)zlu: :tn a:mwnw. :*nyub has 100 turns and its secondary has 200 turns. If the input voltage to the primary is 100 V, we can expect the output voltage of the secondary .b:wynn:zu; a 2mbyeu: l nbt*:)wna/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)ik4ux vz-,gegv/;l q and its secondary has 200 turns. If the power input to the primary is 1leg4v;/i-kuq , vz)xg00 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 *pxx 4twd 1rzca*7w9p120 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 number of turns in the secondary if the primary has 200 turnsp**9wr d17a tzpwc x4x.

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 lt/4nt :i:/7t a2sdg g fodd;ocb 9lf*stepped up to 4500 V by a transformer and transmitted through a power line of:/9nfgc27otdb gdfi 4slol /; tta *d: 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 c*z:8l6 vl;p sqn/.fcrl7zz olurrent at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a pl;l7 cpl fnv8 :l.rsz 6qzoz/*ower line of total resistance 1.0 W. Find the percentage power 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 line 50 km long has a total resistance of 0.60 Wl t-x/a* h br-fwxsmp0.knsvk1/h t+5. A generator produces 100 V at 70 A. In order to reduce energ-pv.* +f5ws-mrh/1/ntah0xs xkbl kt y 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 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 f6m0k3mxltlz+/popb7q*z 03 s :csiqkm 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 up0mkfcs*:s /zp zil+ o0m3bqlxq7t36 p with a transformer with a turns ratio of 100:1. What percentage of the original energy 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 dwipkf)0n wgn-(+, pgnown a 6-W line at 1000 V. How much less power would be lost if the power were transmitted at 3000 V inste +gfwkn0)w p(-n,ni pgad 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 440 V at 20 A. It is to be transmitted on a line z: g3w5k uq))e/whbl vl8w5 kmwith resistance of 0.60 W. T u5k/emb5l )hvgw:l)8wwz3qk o what voltage must the generator output be stepped up with a transformer if the power loss in transmission is not to exceed 0.010% of the original power?

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
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 vemieid8 bsy+qu /8 4*A. How much energy is stored in the coil's magnetic fieuv b +eiq4*s/ my8eid8ld?

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
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit contains afuubyklw + .y1i/ 8dydb(-:qm 6.0-W resistor and an 18-H inductor. What is this circuit's timekb8-+d mwd .qyy iuf u1yl/b(: 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 ini+ ,7ds7nc7pd(m7 zsdw hj0cg an AC 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 placedpt64iye4 in: /y7 cqk1qfxc 5y 2nwa+t into 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(w:fk2jiije42mh1 hna1 gk u; a 120-V AC outlet. What is the resistance of the la 1k :4a2m;2uikhjn ji (ew1gfhmp?

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 powsf *gf:m c7,l;y(dslcer supply. What is the peak current through the : l cdfscyml*,f7 s;(gresistor?

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 comvssl zfw6c47ci c9tk9t+8p/nnected to a 120-V ac power supply. What is the power dissipated isclcp t s8wcv 6/miz4tfk+99 7n the 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-W res(1ggz3 dz6zphistor 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 resistor ygc.0hh3f5d2hbaipvz :59bm 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-W resistn5z--6h:mw(4nngy;ggd+n+jha w 5st fjto 4 xor 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-mH inducto2m u0e,wl)j(b 6p nevsr 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 Hz640ycrz hxt0 v 8py6 qx*z*svy?

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
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 have 14.0 W of inductive reack )(xr+fdgmz5 mdo-i2 b+i2satance?

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 react.*y;r-z 9 jo u(blx5jse p-xnvance 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 120 V AC at a frequency of 20 kHz is49ldqxhva wmn0)j,+4 q5ie cs aplv 9w)x,c mq 0sda+ h54q4jineplied to it?

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 2.50-mH coil duh pg*cnbq5( (ee 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 4.7-md ru*i/+xj :/j7 rx,9h mlhwjaF capacitor 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 W of capacitisrni-b c. (5wove 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 doe 4.;sm ,eg 8kzdsot+izs a 10-mF capacitor 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-mF capacitor be 1;i h zu*77rn3,us n6 nybhx8sb00 W? 8us*n in rb;xzh37 h7usbn,y6

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 and shw jh8bctx4g +dg n-,068naj5.0 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 ci9kqa3isdl d*4wp4jc 78h6pbo rcuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactanc7csd84wal*69di hp 4opbq3kj e?

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 pwy (4s)(r-lsw vg5 uox s1t9pa 100-W resistor, 20-mH coil, and 1.0-mF capaci5( lrs p 1g )(oy-wxptwvsu4s9tor are connected in series?

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
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 if a 100 tr o*:tmdi4u*7v nax5-W resistor, 20-mH coil, and 1.0-mF capacitor are connected4**rvt u:manixtdo75 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 serz nrm0 /;0dmx9 7wx9ljx:vhme fr0jq;ies with a 20-mH inductor, what is the im n j dxh; rwvm;j7qfrzm0xe0x/ 990lm:pedance 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 conndf88: kb3u-i2w eaqh dected in series with a 20-mH inductor, what is the phaedhd2wk:- b8 38fiqause angle at 1000 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
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 coie/*dvt1k;h f bm3qv(:dxvv3al and 1.0-mF capacitor for f 3*bdadt1(:vxq ;v3/kemvh v 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 capacitancesh i09h .u7eqhxn tqs*zs(06ul 15lggd is needed in series with a 100-W resistor and 15-mH cog0s u6h n5dqtgu1 s q9z *h7hl.lxei0(il 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 wta4td)sxc3 ,-u4q 3ods3ubyput in series with a 450-mH inductor at 5000 Hz for a total impedance of 40000 W? 34uc)od-3st,4sbda uqt3y xw

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 resisbgm6. vckzuulnx.ct0.)* a:btor at 1.0-MHz for a total impedance of 150 kW)lgx:k*t.vuua0 m.zbc6b . cn?

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 se7xy zibe)2k pk0k -c4 qol3bz:ries with a 20-mF capacitor. What is the impedzpl7-): oex3b20kk bkzqc iy4ance at 1000 Hz?

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 ih/ c.4tlvk h:z42gxdt n series with a 10-mF capacitor at 1.0 kHz for a total impedance of 45 lx z4. kh: h2tg/ctdv4W?

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 series with a 10-mF capacq1/q9fx d r,b7yyn7/xoge * dxitor at 1.0 kHz for a phase angle ofoxbg9/x71yxy,e7q ddq*/ nfr $40^{\circ}$?

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 bo/2v /w extql+736igd nlya- with a 30-W resistor at 1.0 kHz for a total impedance6ty2+ /gw/ o qvb7-nx3lialed 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 anac3 ( q-wa:*7a 1r+h yf)fzd/pomfmft 120 Hz. What is the phase anglpnqy-h f oda1 rm :azw()f7/m3*cf f+ae?

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 15++sc3h/luueyvm x .h9l2(wvsyj c6;b 00 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are co 9;h2shv6buuv(ls/e+3cyw. c y l+mjxnnected 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.a+bu 7pna:de :0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What is the rms currentp e: 7+na:udab 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 capp9n7 wb lelb1 - ,xi*9wvgr8jmacitive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power1r,-b ge9l7xp8mlb vjw 9 *nwi 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 seriesr4zmdi q,e + w62fv c:30eikes RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-Hqie 6r3d : +fkz4v0,s2imcew e 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 phas5ljijsp 2*c.scnf3 /ce angle ofljic/.cc nsp*3js5f 2 $40^{\circ}$ 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 = hu jg12 dvy6l610.0 mF. At what frequency shouv1 662juhlyg dld the circuit be driven in order to have maximum power transferred 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 resista ilmrh5ej 4)5.eivb*ta1cp0 k nce, 15.0 W inductive ek5cmir5 j 4ah 0v*bpe) it1l.reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 120-V 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
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an AC circuit issk*jnis1nd m50w*v 7 w $63^{\circ}$. 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 irs)8**nl 7vn6vh nvn tmpedance of 60 W and a resistance of 30 W. What is ther8 n 7n6 *n)vsvnvtlh* 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 circuit co:ooud 3 h r6j2,ki u /v;p7kq(phi3jzcntaining a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz power p6ro,ohj7vj : (;2zp 3ukic3 h k/duiqsupply?

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 k1db6jvw ntb22.x8wd frequency of a 1.0-mF capacitor and a 15-mH coil in series?2 1wv xb2ddnb6kjt8.w

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 capacitor fou7+v1a ru2r*o0zxbns.oojwb* t0 0t q r a resonant frequency of 10 kHjwx b*an* 0so 2 01tq07ru+zob.uvrt oz?

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 wiwojw uo)21v 6p+tw-n ch-m)qtth a 3.7-mH inductor for a resonant frequenpo6jtt wuwqh vcn w)-1-m) +2ocy 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 placed in series with a 30-W resoxkj74ehum v1r3b3 4bistor and a 40-mH co73jv1kxe3buor h b44mil if the resonant frequency of the circuit is to be 1000 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
  • 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, 2025-11-10 15:08 , Processed in 0.727553 second(s), 305 queries , Redis On.