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 2gq he8o kym52magnetic flux except

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
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induction states that t ox9e 9,3(m ldvqgib4ehe $emf$ 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 dt * ts3hjt6v7vgd* k/ro80jlin a coil produces what kind of change on thtjtsrv/3v*0 8 o 6*tgdjh7lkde induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the strength of the magnetic field through a loop of wire eh e(z3e t,y d44ioar(produces what kind of change on the induced oe,( ai 44te(yderzh 3$emf$, 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 change on t )(o v;f;vvh,r8pk ctos/;cn fhe induce)sf /vv, ;krcnhcoo; pv; f(8td $emf$, assuming all other factors remain constant?

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
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As a coil is removed from a magnetic field a* 8+eur lax 6k y qr*9h.emudv+l,4ysdn $emf$ 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 intwz 0d( jcjv9l3) 3l)cul3y uc6f0bf gduced current in a conductor will be that which lt 0c9bzcu(0)fcjl3vfly 3 d)u6 j3wgtends 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 i(sqqc/awx -d, s held above its center with its north pole pointing down/a qwsqc -,(dx. 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 a horizontal table. A bar magnet n4vm6 y4xp ls)is held above its center with its north pole pointing down, and releasedlvn 6yp s4xm)4. 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 field vector p ya* r-6,zmfjhoints straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense hj r,z -6*famyof 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 5wcu,p (x)sx ktable top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of the induced current in this coil as the)5xp swkc x,u( 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 where the magnsq bcd v2-4vckrh:xuap gp 5 03s)m+8netic field points straight down. The magnetic field disappe8g)p vpkcdu0m3rvsq5x:-2 s 4n c ab+hars 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 eua ,nwvsta; y(x2.*vrver-increasing current northward. . u xsn vvt;(rywaa2*,Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the induced current circles

参考答案:    
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls through a loop of wire with the o3 6ygkd1nbf.north pole entering first. As the north pole enters the wire, the induced curr nodg. f3kb16yent will be (as 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
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 about a9;o+ my4i6tdd*k/dhc9 .nf zwoq3x yqn axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loodydy/49;6*nt. w oqc9z3md+ikhfx q op's axis of rotation if the induced $emf$ 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 wr.e4qa 8idd a6y 7v( jmbf6r0whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be 7 d. ravwej8a06b4f rdim6(qythe 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.mv r+mn9h(.q y1v,yk12)sunflps*da
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 thao6w 1tdf/g ov(t 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 fikh)n q8x-jzp:eld. The $emf$ produced in the wire depends on

参考答案:    
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in the east-west direction) is moved:gp 3 (tw.fhs1duvh999s v2vhaciav9 northward at constant velocity through a magnetic field that p(vhsv g i2dch .vaf phua99:tw1v9 93soints 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 rok2kkz: f-kz. y bo7; neold*.ptates at 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 rff l7)ok 1:jetransforms

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 e:c;. o4pjzyiz ach second. The frequency of t4py.cizz o;j: he $emf$ 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 de 4y7p*: z /rekkvac6ax vtk+whc8 d8:qvice used 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 dod.c, 7jt; (0xoex -z kei3obvevice 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 7fu lko x(u/1xi7 (hncems2h5contains more loops than the primary coi1x(2(k h7 leuxf5c hs mo/niu7l then it 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 ckog3qg5f *s p5ontains more loops than the secondary coil then it i5kg3 *fg5sqp os 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
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the power i 3vu;dvz go6 d6/g n/jpg.va/jnput

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 circhstvub5h7y)2 uit,

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
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 se6aocb2:4l :0 gil quorries to an ideal battery of constant terminal voltage. At the moment contact is made wiqolb :o: 0 a6uirl42cgth 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 c.n67sreuyw n8(rja a )onnected in series to an ideal battery of constant terminal volta(8.6n aajwry)ur esn7ge. At the moment contact is made with the battery, the voltage across the inductor is

参考答案:    
标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resistance R is coni ck/w3a/vfj( 8 0zd+xd )dtthnected 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 a 6n* t;vk4kblcan.7iR 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 connected5r.a .ae+n(y d*odvcd in series to a battery. The time constant for tn*y5a.eaovc .d ddr (+he 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 conneaug-hs9 oeov .x 38*q4ikoy d(cted in series to a battery. The battery is suddenly removed from the circuit. The time constant for of the circuitd8h3g9i.y xso-uqko4* v a e(o 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 s3a4m3 uklxcawg ot.k 2d9i-,m mp-j: eame units except:

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
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 - 2evdkxpq 1s.a vgqu-o:kc5/ 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. In this circuit, thixs4-e0z vy b(e current4es iybvxz-(0

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 circuitgz. 8p*9gbgpv changes by what factor when the frequency is tripl zg*.pgbpg89ved?

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 vol+enhwia9 8e ;f+y: vcwtage across an inductor is doubled, the inductive reactance of that induna vceh:i9w++fye8;w ctor

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 inductorcx8u5u ww99 mvegth.3 approaches zero, the inductive reactance of that5tu 98.uc93x vewhwgm 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
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 this cirasoowh .c 3+fuzrj 9w9zi(tw03l b+i3 cuit, the currecrt3o (s+3w0hfowi j93+ 9iwzuza.b lnt

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 factor when op(rxg9b,7cd the frequebgxc(9p7 d, orncy is 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 ca6 zntm*o7d1 k j9 /,ntbc.i;3qqmwq; jhlrt3 gpacitor approaches zero, the capacitive reactance of that capacittqtmdm crb n93q/6,thk q ;ogn1 37*wil ;.jzjor

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
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle betwq,n1)b6j,t.sb; o pxdj c9 vgaeen the voltages of the inductor and capacitor in a RLC v, pbg,x1a q). bc s;o9jd6tnjseries 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 defined qf g6 ixssy31b/d- vnmg5a9usg70a + uas $\cos M = R/Z$, 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 impedance9)vjkjbp l9lx .rx u1/m jz23n of the circuit increases if R increases. Whenxjrn lxz m9juk/3b.91 lv) pj2 is this 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 circuit increases4tyjg:c ldte ./;6e mq 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 c)*7qsxlg) 2xsw rw +wyb gz;bk.r;kj:ircuit. The 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 ax +blm0xt bq +80pkes,n LRC series circuit, the rex +elpmbq8, t0k+x0bs sonant frequency of 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 is driven by an AC applied voltagebi: :k 5djs0zb. 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 circyf+5qtlbg+ykw8v6+-pg w- cnws3h z )uit occurs 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:    
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 u9 5 5rh5j3nnbg-ydjj (fulu(pk,eh:rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loopf(hbpj ehk,( g-urjnul553 y j5dn:u9 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 rotating in a uniform magn .sqfezdvew9/1 0zc0q etic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop an.9 ecqfd0 1z/eqz wvs0d 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 magnetic fx)lh3 th( am;aield of 0.20 T. Find the magnetic;)t(m axlh h3a flux through the loop when the plane of the loop and the magnetic field vector are 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 adjustable single 3vr/4xb9xbf8l66ngrqt j5h+f 6 ud g rloop 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 changes fromdhttvd ;f 95*w $4.0 \times 10^{-5} \; Wb$ 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 sides 18 cm. j otb.g1jz 542-v:gfhdd 8mdb A uniform magnetic field is applied perpendicular to the plane of the coil. If the field changes uniformly frbj:1b mfdhd.d zv 5 -g48j2gotom 0.50 T to 0 in 8.0 s, find the average value of the induced $emf$.

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
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 anxnrbest*cl lm6/u by(18 x m1* 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 are rt:3o2x1rs;uk vi8 :bhr8gzea $0.20 \; m^{2}$ 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:    
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
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 horifcnrzx8du/rq9 ,y9 ou 9r v6y8zontally at a location where the downward c 98nruzyucvdy r99r/ q6f 8x,oomponent of the Earth's magnetic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that is 2.0 m 5vj: pud f5b.zlong rotates at a constant angular velocity of 2.0 rad/s about a vertical axis through one of its ends while in a constant mj.ub pvdzf5:5agnetic 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 loou ot12c.ynpy( k k/:tkps 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:    
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
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 1003ai a;c rokb9, turns of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced $emf$.

参考答案:    
本习题练习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
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator has 80 rectangular 4tpokqqhs( j p7*1*hgloops 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 th qphkq g4op7* s(*1jthe 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:    
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
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consistsm)-uxjtm ( +wf-lghsv xy*10t 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 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
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 generatoi7 66izf3w+6bixd x trr with an output of 12 V maximum when rotated at 60 Hz. A magnetic fie3 bifxt6x+wi 6zi67dr ld 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
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are designing a generator with a maxim ey v2-y4-aw xwimo(2wum $emf$ 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. Thv 5(8c2dzy;/jc5 ctyg mz la+ 2fc)wxse 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 resistance of 6.00 W. Thdo o(0f2.cw bouug,04z sxp w;e motor operates on 120 Vbg24 fu ow0xou .dpwzsc0 ;(,o AC, and when running at full 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 resistance 6.0 W is connected to a 24-V po( 6r(.hd3ci hty mlbewe7o3g (wer supply. Them(h w6gcbhei (le(to3 7ry3.d operating current is 1.0 A. 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 Ww 0++(7cbzyis aq(zub1 mr(im is connected to a 24-V power supply. The operating current is 1.(yb0+1 mzbc rsa 7mwz(iiuq+(0 A at full speed. 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 resistance 6.0 W m3qab1zh. d:s:n.vs i 1fs0dpis connected to a 24-V power supply. The operating current is 1.0 A at full speed.m dnspfd10i.1v az.q :ss: 3bh What is the 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 transformer is needed to reduce a prima6uvs-sdi )o0xlurtm8 9fmf (k: qki; 8ry 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 /h-1mo f: b)z b7x,sqhvqy,jgof a transformer causes 14 A to flow in the secondary. How many turns are in the secondagzfyv,-/qj 1omq,bx7 )h bhs:ry?

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 primary if the 245bq0j/gy 5 ddn tin3v;avb93m*nk4fx-V secondary has/q ;yi3jt4m5na3 vf* d5b kvbd0nngx9 100 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 500-turn primary coil and a 2000-turn secoikhs s7a,,-jd ndary coil. If hj-a ks,d7si, the current in the secondary is 3.0 A, what is the current in the primary?

参考答案:    
标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.0 A at 110 V flows in the primary of a transfor05- vhxp 1.jekrip 3fpmer. Assuming 100% efficiency, how many amps at 24 V can flow ipkh-f3 p .ex01jr5vp 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 sig6jwx wrr*ta/r,n km 62n transformer provides 7500 V at 10.0 mA. The primary cow /rtn6a*26rwjx, kr mil 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 prims jcbc:ug9+bhs *((ot ary coil and 300 turns on its secondary c:g+uct s(js b9ohb*c(oil. If 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 y xk7sseam)* 6on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applm*y7 ) s6easkxied 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 transformekuy+h .j bg//jr has 100 turns and its secondary has 200 turns. If the i k/h y./+jgubjnput current at the primary is 100 A, we can expect the output current at the secondary to be

参考答案:    
标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has yz l/n0;y8 )hter 6 +0vcwzddf9zvcj7200 turns. If thd wj /f0h9t+0yln c)dy; ce zrz68z7vve input voltage to the primary is 100 V, we can expect the output voltage 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 transformewpl( .n 5xmdl/r has 100 turns and its secondary has 200 turns. If the power input to the primary is 100 W, we can exlnl5. p /w(mxdpect 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. The voltageffifc9; ( h;ho is usually stepped up to 4500 V by a transformer and trf9;f fi;oh(h cansmitted through a power line of total resistance 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 voltplyv2ucr) xb+ q0, 0bz3ql;az age is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resq q+ v2) ubr;lp ,aclzzx300ybistance 1.0 W. Find the percentage power lost in the transmission line.

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
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 6 * wgtbu,4 uf)q.8smu.xi2a lk0 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power li 8.tuum2*4w g.sixak f,)ul qbne 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 resistanc/ hb7awph/dr:3nqz a5e 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 stzna7b/a:wh d5h/q p3r epped 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 ofg ba:d- v 4gvx:vj9)je 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 transf j4e 9vvja- :bvgxdg):ormer with a turns ratio of 100:1. What percentage of the original energy is lost when the transformer is used?

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
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. How much less power woutzvi/w7tir-9k4. im ;noyfc1ld be lost ifzi 1oy.;f4c9vw/i-7mtt kn ri the power were transmitted at 3000 V instead 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 line5sm . biwff,xhgil2.9 k2r;6c )7aaxgmf; ean 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 . .ifrag h)x,5ga72fl;xekm6 2imw n9; afb sc0.010% of the original power?

参考答案:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries ab3)lp,b6zmo : wl nd5 dtl7u*j current of 5.0 A. How much energy is stored in the coil't,lbl*3w lm uz7po)6d5j:dbn s magnetic 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 contaikp.py,.2glc u1ix j2-vyyy5sns a 6.0-W resistor and an 18-H inductor. What is this circuiyl2- y gy5cki pu. 21yj,v.xspt'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)*e4cg vml khb: qz7u t(;r4pijfa74v 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 placed into a 120-V AC outlet. What is the pe qydh/3d( *wamak 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 resi,+9f /xofrh 2, it nvcxp8x)westance of the lap29o+c/ r8,th xxx)fn wfev,i mp?

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 is t,r;q ),up7w9*/dvwvx a4ft kp qjse0bhe peak current through the resistf ,p7r sj ;,)w9utvp/*qxqbdewv k0a4or?

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
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 s-(cbwv ;(i 5nc mjy3pp7ssy:vupply. What is the power dissipated icy(:pvs3s5jn 7wc- m(;vbp iyn 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 resistor is7 w6n)q- l7gd.zrrc uj,(y vaa $I = 0.80 \sin (240 t)$. 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 resp y(82ejw yj qbdyk+g:)h0ap(istor 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.nw ttvr6u ta cwwuo+;+v44y8 $I = 0.80 \sin (240 t)$. 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 osi fvhqzu dz(tf1b ; 8/w(dek4eq50a* f a 1.0-mH 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 100w r4.3pwe v dx g,k125wvpq8uj0 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 have g 33g, nb2npaz14.0 W of inductive reactance?

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
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 reactance at 10 l0an19k y6orv00 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 ind1e d: zzfo2ke2d77:mgy juk+v uctor when 120 V AC at a frequency of 20 kHz is applied to it?12j+yg d 7ve:z z2:u k7efdmko

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 sz frt;:je)8ddue 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-q 3)-l ddips e1+2h:s9n+/o e 8/ughgswrug pzmF 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 capacitive reactanceg5eyyh ,g: *ow at 10 kHz?

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
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency does a 10-mF capacitor have a rea2crb7 pruzhnkx, 1)i 8ctance 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 reac) gn8cuny*f8p h7q+0 lzd8j sstance of a 0.010-mF capacitor be 100 W?j un g8s*8qz+lh)y fs8pc70dn

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 5..qcbug+v1/hos l/ob;9ds tg v6 :6wor0 V?

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
115#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the impedance of an ac series circuit with 12.0 W resistan1)f w *u7.aasqq0jxroce, 15.0 W inductive reactance, an.ao7ra w0qu*xf j qs1)d 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 100-W resistor, 20-mH coil, amymkr+ 2/ oy5wnd 1.0-mF capacitor are connected iny wom25kmr+y/ 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 at 1500 Hz if a 100-W resistor, 20-mH c,9drtvic *:d:q mpx ;boil, and 1.0-mF capacitor are x ; 9:b*tmv,:diq cpdrconnected 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 induc4uv az hca8s2,mqq z 04v9/gsytor, what is the impedance at 100vgc zyav2 /,8 zs0 ah94qsu4qm0 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 r2xnpe ry y/8cp960ssa 20-mH inductor, what is the phase angle at 109/p 2rp0s ey8rcs6 ynx00 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 seril)lx qwi)7eq- lx *tm2es circuit with a 20-mH coil and 1.0-mF capacitor for a total impedance of 100 W aw*)lt2 )emx7 l x-lqqit 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 series with a 10 +c0vl5spq(n3i ,wdr r0-W resistor and 15-mH coil to get a totalnc r vidq,+5pw rl3(s0 impedance of 110 W at 2000 Hz?

参考答案:    
标记此题
122#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance must be put in series with a 450-mH inductor at 5000 Hb6yi7vaxb (8nptcn5 5z for a total impedance of 40000 (b67b5 8 5vnctxipaynW?

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 resist kge7 7wdszdu92j/2ob 1hv(x yor at 1.0-MHz for a total impedance of 1s2(v1 z7/djou 7ybgdke h92wx 50 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-+n4f2v xuuko+ mF capacitor. What is the impedance at u+v+ n 2ku4xof1000 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 i-38sev ir 3t 26m)vkh-b.ookhtga0h kn series with a 10-mF capacitor at 1.0 kHz for a total impedance of 45 W? ) hr2t0agh- k.s vke8k6ohiovm3b3-t

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 so65ki2w ;yfbrp1:r ta 10-mF capacitor at 1.0 kHz for a phase angoi ky5t2 s;6wbrrf:1 ple 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 i;b 4kitqz n.g)n series with a 30-W resistor at 1.0 kHz for a total impedan.z;gtbqn)k i 4ce 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 capah jez:9ngm:k1 n38fx gcitor at 120 Hz. What is the phase angle?eg8h m13fgnz:: n9j xk

参考答案:    
标记此题
129#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows at 5.0 V and 1500 Hz if a 100-W resistor, 20-mH 1et fh hi+ivn6/ymnt2 .p uc10coil, and 1.0-mF capacitor are connected in seriehcfv etmt / 6p 0.nni+21u1yhis?

参考答案:    
标记此题
130#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit consists of a 100-W resistor, a 10.0-mF y81rm6 qr peddm3: 3rdmz5ia,capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V, 60i5drea6 y1mr 3mz, mq:dd8r p3-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 reactancux v:gve/3afkluc 39pi3 r1mz**am7ve 30 W, and an inductor of inductive recu*v3xu/v igma13elv* : afm9 3zp7rkactance 30 W are connected in series to a 110-V, 60-Hz power source. What current flows in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle fx)eoglzi +je u*uky2ha:( a+*or a series RLC circuit containing a 50-W resistor, a 10-m2l*ux* +ykeu ezj gia h(a:+)oF capacitor, and a 0.45-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 foqx;abkkuvj3 /si45o :f-mz2 rr a phase angle of/r:fxm- uo4s; 53k iaj2qzbkv $40^{\circ}$ 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 /6)yeha6g) wxkywdq,, C = 10.0 mF. At what frequency should the circuit 6 ),e6/ wag)kdyqxhwy 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 outpu/p5 epgy n6f)jt in an ac series circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circu jge/p5pf )n6yit is connected to a 120-V power supply?

参考答案:    
标记此题
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an AC24zbdbl i1 p/f 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 60 W and a resistance of 30 W. What al12zf pbp1e .uk/ws: is thf.:s1/p2 walekuz1pb e 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 containing a 50-W rl:t zizc.0ex0jp1- ib/coci 3esistor, a 10-m c/zo3j.zix -p010 ib eclcit:F capacitor, and a 0.45-H inductor, 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 frequenc;ku39 fnajrmi;xma9 0 y of a 1.0-mF capacitor and a 15-mH coil in series?0nm k;a mr9j xiu3a;f9

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 for a r q,gwck*:2mgc esonant frequency of 10 kHz*gq2w:c m, cgk?

参考答案:    
标记此题
141#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series with a 3.7-mH inductor for a resonand;ka6)e of1 r r;a8ehvt frequency of 100e oeaar 1k;hvrd; f)680 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 series8d o,ikjohzq se()elr ).d3k. with a 30-W resistor and a 40-mH coil if the resonant frequency of the circuit is to be 10oidr3qe.kk)(8o edz) hj., sl 00 Hz?

参考答案:    
  • :
    •
    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, 2025-4-4 18:09 , Processed in 0.724104 second(s), 305 queries , Redis On.