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 ara1s o;y3n 62fbqeyts2e units of magnetic flux except

参考答案:    
标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induction(3fhwb0vyk n+8 y 5krk states that the $emf$ induced in a loop of wire is proportional to

参考答案:    
标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the number of loops of wire in a coil produces what kind qy3s) dvbij5 t,7ro5xi- ir5wof change on the induced -dirq7 w v5j3iyb5xt,r)o5si $emf$, 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
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the strength of the m 2ph/e34kknf5g yb(pq agnetic field through a loop of wire produces what kind of changpg/kqkey2 (f bp4h5n3e on the induced $emf$, 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
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 wha x w75hbmka*4s7nlymz,1vr),c nv *v st kind of change on the induced 7c*l hn1nmmkrb vv7s ,z xvyaw4,5s *)$emf$, 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 magnetic fielw5l)n( z cpf hr*/r9ead an $emf$ is induced in the coil causing a current to flow within the coil. This current interacts with the magnetic field producing a force which

参考答案:    
本习题练习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
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 igqvgoza+:,(t ar v+x:rwjs k.+bp/b0nduced current in a conductor will be that which tends to produce which of the + qj.t+gp v :rsg+ o0x/wzba,a(vk:brfollowing 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 6l 6*n xe1d13unpvwa fhorizontal table. A bar magnet is held above its center with its north pole pointing down. The stationary magnet v alxw p6e3161f nd*nuinduces (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 o0l-.wo2cfq fe9ob 9s ks l-y5un a horizontal table. A bar magnet is held above its center with its north pole pointing down, and released. As it approaches the coil, the falling magnet induces (when viewed from above)s-ce9 lw0qfyu. 5k29- oblosf

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 mania93y7yrx -6ji id4rgnetic field vector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense oir-r i a jnx7y496i3ydf 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 tablexuw:)v6r) m,wb*ywnf 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 field increanyb f)*rw6:wvu , m)wxses?

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
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 regioud 6-r(x.i *v bqvigsyvp5o2:n where the magnetic field points straight down. The magnetic field disappvxq:s* vv5.(gurpbi26-d o iyears 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 horizovfi ph5n*vu*q(q6k s7 sw9ip7ntal 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 from above, the induced current circless(f6w5ph* ui v*q9iqvpksn77

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 wicmy nvc2m 3;- (am3h,ygrp,msre with the north pole entering first. As the north pole enters the wire, the induce v p23-y3smcrnh(g,a,mm ymc;d 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 a 8ek*4 k3gben;;by cv8r8g ayxbout an axis whose direction can be varieeg8;rkg8*x3b4 y cb;naykv 8e d. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be 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 wiret ./pz 11mhxt1 uxw )oi)z9uqj is rotated at constant angular speed about an axis whose direction can be varied. In a region where a unif)imu.q1j9x/hu )z11x pzt wo torm magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be a maximum?

参考答案:    
标记此题
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.kk -3c)aon qj;
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 ano; lo7m1, b my*humx1k)rdaf9 $emf$ 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 t7c4 a. .-enc1 irxbgp5mxp6y 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 the east-west direction) is moved northward t)gpufjt. 9oq52 fj v( 5vjnu*at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential f(9.n f *p tvjt5oj vgu2)j5uqinduced across the rod.

参考答案:    
标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar rotates at a co9rg6b4z+m pqy h,c9n mnstant angular velocity $\omega$ about a vertical axis through one of its ends while in a constant magnetic field B that is directed down. The $emf$ induced between the two ends of the bar is

参考答案:    
本习题练习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
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generator transfor,p nq upy)m2l:zg; jj3ms

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 fru6 xe .ubh:h:dpgis54equency of thei4dhuex .hb:s ug 56p: $emf$ is

参考答案:    
标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device u mqt,zo6mg ry 3,n hpu1(lr iv.6/k.thsed 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 deviblo6bt:,-9sz*e2ho7dw1 lauwian- m ce 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 cfvdv6q, d9azt )k6v o84p-i orontains more loops than the primary coil then it irv6tv4- dod9zv )apqi68ko,fs 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 theeu,l u822h6tbbrc d im)v0vj6az: yjns7x-8 z secondary coil then itcl08xduh ) ejzv,8 iu tjbvm762-b:2a6sz nry 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 inpu+c3gts knh8,sytq 92c4as x 0mt

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 circg6/nu r (dzuzv7c+iv 3uit,

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 zrv bfh4l+ (7tbattery of constant terminal voltage. At t7fvlz+t4 ( hrbhe moment 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 connectedw 5fyy0 1*sxm*kok5a q in series to an ideal battery of constant terminal voltage. At the moment contactmaxofw* 55 10*qksyky 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 wafocl.t0 rt; :ith inductance 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 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 acfgot( es)n:a1 e -;clnd 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 battery. The 25x;osowgwp )(b n;fotime constant for the circuit represents the time required for the current to reach;obo5(p sx n)o2gfw w;

参考答案:    
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to a battery. The battery icovm8zb1 -47hk +udjc s suddenly removed from the circuit. The time const j1 hzkubdm-+o 4c78vcant for of the circuit represents the time required for the current to decrease 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
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 tsjosh7t79b3nw 9c9 g+)w z;j3bs act except:

参考答案:    
标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor is connected to an AC power supply. On this circuit, bo* g.w-*vgfrk,wru .s ,(gcq 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, the curskid )t6/ft- 7v3mfzg ren6ttd/fk- 7fvzmi)3gs t

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 factor when the frequenb4njjp gr9maudd,cbyev0v. 4 39xn9 ,yj 6;vkc d,4r.u0vxvd9 vyg9pnjy,cb3aj9 k;6 b4enjmy 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
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 a1q+/xyle6cx xn inductor is doubled, the inductive reactance of that xx 1eyq+/xcl6 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 thc )jhga*wt ly20 )3ezie AC voltage across an inductor approaches zero, the inductza2*h0y cgwjt)) e3ilive reactance of that coil

参考答案:    
标记此题
43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure capacitor is connected to an AC power supply. In k7axs- s:8x yc cfrugrm41ul89lh.3 rthis circuit, the curren8kc.ug 3-xl84hrcmslr rsuxfa:y 9 71t

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 )7zm*e us3 emziqcl/ )ub); dlan ac circuit changes by what factor when the frequency is tri 3bdle;ec qm7ml)/)z)s u*zuipled?

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 approaches zero, the capacbb (-hw83)rxq7v-i m o7vaa3 hct-qlcitive reactance of that capacvi(aw3q b7vql t- hax-37moc)b 8hrc-itor

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 (e 9 flbs(+ 8nutx5htkthe voltages of the inductor and capacitor in a RLC st(ten+lhu 5k8f (9b xseries 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+/-eehe*0r;pyt. s ksf-dlgv is defined as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the circua2p 6(tv)xggeit increases if R increases. When is this statemet a2g p6(x)gvent 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
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of 6vi.p puft0*2 et jc;2 usxr.ythe circuit increases if $X_L$ increases. When is this statement true?

参考答案:    
标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC series circuit. The impedance of the circuit increases i9aas)1j;wem3 a4k kfyf $X_C$ 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 cotf ve3*-hu(u 8(n+9k ts;ib+u qbxuseries circuit, the ub3t+ ((ou b-u;ch+n8ift qx*uk9 s veresonant 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 voltage. At resonancelg8 -uh+v 2lbqyeb5c0,

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 cic-ks0b.snlc3/6q bdv+ y u +mlrcuit 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 uniform macti; mn 9 )y ko uyd+7c/kw66h8w8jyzwgnetic field of 0.20 T. Find the magn)z678/kjy tcduw;n kc w6yoiwh 9my8+etic flux through the loop when the plane of the loop and the magnetic field vector are parallel.

参考答案:    
标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating in a uniform m/g g4s7-)ohhpuci t+1x lvc h*agnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vecghlvt /* 4 hxu-p1+7hc siocg)tor 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 jivo0ae6xjubsrz4 8p16;cct 6(boi 5in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when4p;os(6bt5curiz1jvcb 6ie0 8o x6ja 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 loop ./lskdcv t0gy,u -mv3fui4g c b;n08tis 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:    
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
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil changes from niwi7d;xw )h8 $4.0 \times 10^{-5} \; Wb$ to $5.0 \times 10^{-5} \; Wb$ in 0.10 s. What $emf$ is induced in this coil?

参考答案:    
标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil is wrapped with 200 turns of wireww 8) rh s9n5sg2:wttf9wc i0r on a square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If the w :w0tss8r rftc 9wh) 29in5gwfield 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 wir 2uja1.fu czpdsefw: u+g0/ f,e with 15 turns and 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 area a 2du(-vk1c/ggyxip th1p ev7 b-2q+z$0.20 \; m^{2}$ 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 woz izjhgotc,/ d.w0+jai;-nl/: i (rz ing span of 60 m flies horizontally at a location where the downward component of the Earth's magnetic zgt0j onhaji+l:(c, zo- zd;/i w.ri/field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that is 2.0 m long rotates at a constant ang(q)kd*o icp 5fjk 7jxtza 800xular velocity of 2.0 rad/s about a vertical axis through one of its0(fxckk 7x0d*pqji )o5tazj8 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 lv/6a97vliw1*ch)bpd ppl v0l oops and a cross-sectional area of $0.25 \; m^{2}$. What is the maximum $emf$ generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?

参考答案:    
标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 100 turns of wire of o3infgz* ki0vt- sb g/(qz (r;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 ik-7m/ mrc su7e:zel+ cts 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 will be the maximum outpskze-7m+e: /c7c urm lut 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 p9 a*:j0dqvbuwire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current.

参考答案:    
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that you wish to construct a simple ACp:phv/o l3:b n generator with an output of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is available. If the area of thlh3v p:o:n/pbe 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 pv2hh o0tp3iji;t d9,p ghh53with 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 g6rdk*op 2z)*a owdsrpo c/(76.00 W. The motor operates on $120 \; V$ AC, and when running at full speed it generates a back $emf$ of 105 V. What is the starting current of the motor?

参考答案:    
标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC moto5zg kyp:wd wd/w;bu /+r have a resistance of 6.00 W. The motor operates on 120 V AC, and when running at full speed it generateuw/z+dykb g5wp/ ; wd:s 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 connectedmkty;c:pgnooeg (5 v:(+/n dc to a 24-V power supply. The operating current is 1.0 A. What is the start-up m og;5t(:ndgyvc/pne:o (k +ccurrent?

参考答案:    
标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is connected to a 24-V power sw-y lpt3w pk)a3n.c+nupply. The operating current is 1.0 A at full sp cpw3y.a)npt w+3-k lneed. 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 is connected to a 24-V power supply. -6nlm no,r 86sqab. xf r5o1fiThe operating curren, -5fi 66oas1 8rmfqoxrl.n nbt is 1.0 A at full speed. 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 primary voltage-21b2fksbs b e of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

参考答案:    
标记此题
77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  2.0 A in the 100-turn primary of a transformer causes 14syt m 4,1e wff )7rmjjc4kiu20 A to flow in the secondary. How many turn 4w7j ft,cukj)4mse1 fim2 0yrs 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 necesg1,9a* *s tq l94isna)r u h1kbdmk3hnsary in a 110-V primary if the 24-V secondary hg4n uhh9i3t)1*s kmqd*1 ksl arab9,nas 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-ws8nf :sb9q6y uxsnp0u 9w,7k turn primary coil and a 2000-turn secondary coil. If the cxb s6nf,yqns09u98w7 : kuws purrent in the secondary is 3.0 A, what is the 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 in the primary of a transformer. Assubh y+/t0 0ov jgfe:cp(ming 100% efficiency, how many amps at 24 V can flow in vp(ohjtyef0g c:/b0 +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 provides v+kpvo6jp0r/j73gvg )tj a4 g 7500 V at 10.0 mA. The primary /agpoj 0gj vkj+637t4vrg)v pcoil 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 d/8el bfv2(*vnf n(aaits primary coil and 300 turns on its secondary coil. If 120 V at 2e*bna(/vanf 2 d 8vlf(.0 A is applied to the primary, what voltage is present in the secondary?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its pl v8byxi.f.l0z h98azrimary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what current if.vzaixy.8 l 09b8hzls present in the secondary?

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
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer o3w l li8ytc)6has 100 turns and its secondary has 200 turns. If 8lytoi) c 6w3lthe input current at the primary is 100 A, we can expect the output current at the secondary 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 200 turns. glh,x*i x2::*t6cu4ygpqwi8wp3vk,lpkf g5 If the input voltage to the pgiiw*p,3p *v2q6yg5lgufx h8c k kwlt4 p::,xrimary 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 transformer has 100 turns an8su )bjl*m+ 3nr;,yy 5pt appvd its secondary has 200 turns. If the power input to the primary is 100 W, we can expect the power output ;ym8y*vbr5 n)p 3ulsj, pap+tof 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 6 5jr7l2rdwf0 k0 A of current 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 number of turfw 5r0j2ldr7kns 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. Th) p+3y)iwndz f9vkpbw mfg8x -vd-2 6ee voltage is usually stepped up to 4500 vp9kmdg-x3vw+zb)fypw 8 -d eif2 )n6V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
标记此题
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually steppejjv (x lqe2 9yj/ +,1qhmjoe5qd up to 4500 V by a transformer and transmitted thqej vq9m1o5(ly j/2hj+xe jq,rough a power 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 50fp 3rl. o+nj6/u)yavp km long has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, thepyjvua3.l+n/) pro6f 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:    
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
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 resit1-p //rju2l o5oa eunl,o e;lstance of 0.60 W. A generator produces 100 V ap2lo5/ l1ee; -lnu,aot j r/out 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 the transformer is used?

参考答案:    
标记此题
92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  100 kW is transmitted down a 6-W line at 1000 V. How much less power would be4s+wnptzg.dn rk:t x 1 3/ah7l lost if the power were tra1hzwt:nk/n+3.g 7l tpr s4xdansmitted 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 31pw5.j qkpq7ts k5 ed05ogcsbe transmitted on a line with resistance of 0.60 W. To what voltag0ogwk 5ets53 qd7kcq.51p jps e 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:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a current of 5.0 A. How muchl8 (lhm0pq3 caum,i7ilxde8 7 energy is stored in the coil's magnetia(l03md ,lix8qh7lp m8eci7u c 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 and an 18-H)a h p/vucsl;, wykvvi;6 0;es inductor. What is thi ,h/as0vi ;e;vupwls )c6k;yvs circuit's time 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
96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the peak volta /ah4c8eh0ptuge in 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 placedc8qyldd( zlf910ns-v 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 al/uk8 gm(w5 fvi4iht*( 7wqnm 120-V AC outlet. What is the resistance of the lamp?k5qt/ wm4fn(vig i l *8mh(7uw

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. Whatznx-vf .j f/o) ha,ier2rum+/ 2/skqw is the peak current through i nr+-u vx.2h ),qk z/jf/e mfoasrw/2the resistor?

参考答案:    
标记此题
100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected to a 120-V ac power supply. What is th.9gon+zh w,jh f8p is-e power dissipjszigh.h+ ,n-ofw 8p9ated in 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 resist.v02m d1vteyw or is $I = 0.80 \sin (240 t)$. What is the rms 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
102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through apd3hagu)falhrzxc4x*;b 9. 6.+f g f d 50-W 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 +ue,z oqr* e6aa 50-W resistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
标记此题
104#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the reactance of a 1.0-mH inductor at 60 Hz?,i 10.2y,e a qbfq 7c:qtqmrys

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,v,7hm2y zd2vnvs s,r 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 coil1*v8 lpd ka(amslxy ;* 2/lo2gyxjs)m have 14.0 W of inductive reactance?

参考答案:    
标记此题
107#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary for 157 W of inductivo9j t7c l)r9bme 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 120 V AC at ad nhy0:s)-pr a frequency of 20 kHz is applyp: )rs0nh-ad ied 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 due to a 110-V, 60.0 H;-oy a1nnv*w vz 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 8l :p-h jjmlxp5b 5k a)t95hqg4.7-mF 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 capacitivs9.kd1w 0voy;pf nz 1te reactance 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 reactance of 1200)a;)7 jd)n .jmbguyab 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
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 100 kj;. btevi*uk +nj-dv x bl);,W,*x;b -.edb i tkj v;jukvln)+?

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
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 1000gg4)d*p4u7tu b j7t nr Hz and 5.0 V?

参考答案:    
标记此题
115#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the impedance of an ac series circuit with 12.0 W resistance, 15.0 W iq9g88 1a1 nd ;mrteyelnductive reactance, q1ty;rm19 d8nle ega8and 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 impf xx7ot ds-1n0+m pk+bedance at 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connetd0mx+ +p-7bosnx f k1cted in series?

参考答案:    
标记此题
117#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle at 150x 96:3n olb,p uhz0lcd0 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are c :odn 0xu6p3cbl lh,9zonnected 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 conne- vjd;tdr9wjws 9+fr0g: 2xfzcted in series with a 20-mH inductor, what is the impedansd f2g-r +jj;f9 r z0dwxt:v9wce 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, wr;r:zp790w lw w ozef(yv/ou3hat is the phu7we y p l;wvzf0:w9 o/zo(rr3ase angle at 1000 Hz?

参考答案:    
标记此题
120#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in a series circuit with a 2tm0646qa ad: d9s rego0-mH coil and 1.0-mF capacitor for a total impedanc660saa4or9q dg e t:mde of 100 W at 1500 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
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,/qakzvv1 1m21u hfmf with a 100-W resistor and 15-mH coil to get a total impedance m1qfav2f1z 1/v k hu,mof 110 W at 2000 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
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 b r9 qnfuaq sw4 )i7tr+bdrqikk /a5f*;k)8:kHz for a total impeds kqqfun; r+dwa 5 bt7a4 f/ ikb*)8r:kr9i)qkance of 40000 W?

参考答案:    
标记此题
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be put in series with a 100-kW resistor at 1.0-MHzyae p (i6bh;z- for a total impedance of 150 kW?ae(b-y;6 zhp i

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 se kckszz;ak: -khel(5su(u;788(jfbuur 1wh wries with a 20-mF capacitor. What is the impedancew sr a8sk ((cbu8he1 uk:z fhu5 ;wkuzl;-k7j( 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 neededal lduej,()0ok w. ti( in series with a 10-mF capacitor at 1.0 kHz for a total impedance .u0jkla, wi)del ( to(of 45 W?

参考答案:    
标记此题
126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series with a 10-mF capacitor at 1.0e vb2*6+ l/mmuq y )s(nydqwxm/us, c3 kHz for a phase anum*+vm y3l(wn sue26mqd ,c/qyb/) xs gle of $40^{\circ}$?

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
127#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series withikk:-yhp7: i 9(b5meqm3b+mgndgs;* ox2kmc a 30-W resistor at 1.0 kHz for a total impeda k-*e:9b;mmmc2( gp 3 si k7iy5+gqh oxbnk:mdnce 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 at 120 Hz. Whop opzqm .0(ld5-.hzyia tn 77at is the phase a dyp70omil (z57oqazn t.p-.h ngle?

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 t2 md x5x./1vi/rv ieeV and 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitoree5tv/i v xixd.rm/21 are connected in series?

参考答案:    
标记此题
130#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit consists of a 100-W resistor clf/9fjjjr ml7zes ;+nj 7l+4, a 10.0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What is the rms currennlcf jlj7lsj4j m z/7++e;f9r t 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, andr r44 o6im2sbj an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power source. What curre o246m4sjrrbint flows in this 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
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a sers5yb ;wm :qxe+s/ovv*ies RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when s:;s bx/+ 5yvqmvwe o*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 phadp3d2ec q ,8hu/lx )v5 7idaaxse angle of c5ap/7he)dd8,xa 2 vxi3l q du$40^{\circ}$ 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 freque:q2wd)q 3v qza -jyy-oncy should the circuit be d 2:- yawd3 qqyqo)vj-zriven 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 ou/k- wr)4a ywe(wa2 uxftput in an ac series circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected 2keu (w)wwx-a/ ay fr4to 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 wdse-h82 kfgw47f+ mrAC 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 impedanc)e4uv sb0vt3wtmh6 ;de of 60 W and a resistance of 30 W. What is the power fst3tde h4;) 0vu vbw6mactor?

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 containin f)8y1rxki,/jevm7 nrg a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz po, xvim)1ye rr/8 fkjn7wer 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 ,ue k -4r5reulof a 1.0-mF capacitor and a 15-mH coil in series? ku4uel,e rr-5

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 resonant frequ1xx(4j bj rei)ency ox1e) jj r4xi(bf 10 kHz?

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 axi6d-/ gbp8 qs resonant frequencyd/q sx6 p8ig-b 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 serns(1 kmegkjp()-bzyhfj+rbb ;h +ki5r+ +(n cies with a 30-W resistor and a 40-mH coil if the resonant frequency of the circuit is to be 1000 Hz j+m pn(nr-iehksr(g k)1(bhfbk++ +z;ybc 5 j?

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
  • 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 06:15 , Processed in 0.747990 second(s), 305 queries , Redis On.