题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp，上传完成后会在上方生成预览，用鼠标连续双击缩略图，或拖动缩略图，该图片就被绑定至本题，显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片，绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习：Physics Unit21: Electromagnetic Induction & Faraday's Law
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 80 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://tiku.one/test80.html
 作者: admin    总分: 142分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月20日 21:29  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following are units of magnetic flux eq p,o/9 cw6dyb2,g*mkzv t )xbxcept

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 induc ld9.ogs :pxh:3 ekeccf4h/5z tion 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 8u9q kfq z(2aykind of change on the in89aufyzk q2 q(duced $emf$, 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 wirjw fbdp8 vv38vyk4 b04e produces what kind of cybw84v0v 34v8j dpbf khange 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 change on(zuzq/e u l4pq (6kp0u the induzl p(6k0(upu 4zqq/euced $emf$, 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 magneticqmyf.x:t3h-wg d3).p l j8ivc 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 current in aksp)5lo ty pb 4m2vkub916fg 0 conductor will be that whico49kbbtpp)fuv 26m gy50 k s1lh 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;atnrq b e6rw t 2q/oodjl,:e *jhkn-9r+34hm held above its center with its 6 eoajnq:tq dmne+ht * - ;r,l/2r4khwj3o br9north pole pointing down. The stationary magnet induces (when viewed from above)

参考答案:    
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal table. A bar magnev)t4fr lx m.;lgnm4qa7 *a v ycbt81-lt is held above its center with its north pole pointing down, and released. As it approaches the coil,mt)ll l*.4b 8nqc4mxa ftar-1g 7vyv; 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 regionhr(yj0 7+ e 5kvjzgday* (x, blju,y9y where the magnetic field vector points straight up. The magnetic fijld9*u gh+kv b yjxz,5(r7j,y( eay0 yeld 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 tet3)t, o,zglo8kcp*zp+)i)z ez *ow m able 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 co zi)e8 zp*lp*e )t,) ,+co mzoo3wtzkgil 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 z ts31btwv i a:5n2t0pa region where the magnetic field points stratpw3bv:t1az t0i5 2nsight down. The magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current in this coil as the field disappears?

参考答案:    
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wire lies on a horizontal table and carries an eveltk ns8n 8jl t fo1+ly*27*fk4t7fgclqd l75b r-increasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, thejflgl78 tqfb5n7nlt fc 8k 14od*k ylst l*2+7 induced current circles

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
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls through a lo j8:3..id :i+f8p nnfmqemjdmop of wire with the north pole entering first. As the north pole enters the wire, thd .jf 8 n:med +i.qmnji:pm8f3e induced current will be (as viewed from above)

参考答案:    
标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated at constant angular speed about an axis +(z)h9xv y5ehs f3g nswhose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of se xz9nh+s)hv5f 3yg(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 wire is 1, ibzf +jtu(jrotated at constant angular speed about an axis whose direction can be varied. In a regu fz j,1bi(+jtion where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be a maximum?

参考答案:    
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
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.iy cxzg/yblho 60nn: l85he( y/ 6kcm3
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 anud49c mi*x 1n)mc:bwo1 b, smr $emf$ 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 g3zfiwk9j1af4o en9(zc 4:bma magnetic 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 atjjke 2pun9i0 zdxw 01rv(q:v7 constant velocity through a magnetic field that points straight down. Make a statement concerning the potential inducu1 (jj7edi nvvqkzp92rx:w 00 ed across the rod.

参考答案:    
标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar rotate.t rpeg( kwb mg/:d mq122he8zs 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:    
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 transformd 7e/o pbf 6uzv,00 m2p:73owgciod ejs

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 kc /8lx,+m kzx c 4fi2,+cwau4ybxe-f revolutions each second. The frequency of thekf4 kc2xe ,cxmi,-z lcxby+wfu 48 /+a $emf$ is

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a devick 7g63;snscxzy9y ho1e 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 device thfhsmzf89 iq. vxx5x;/ at

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 wpi uqadk3,hhu cb a5g31;:j3 secondary coil contains more loops than the primary coil theg1udqu53ahwp bk3i,3 ch j ;a:n 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 coie j clq* i b4-ag nn-br/rn+h:xn*d,tjg/y 6+xl contains more loops than the secondary coil thexgxrdg/q+yrbib - :nj/ *4+,*n a6njlcenh-tn it is a

参考答案:    
标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the power inpuq5mr 7z x;rtj5.g4e lbt

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 cimi8:vk93t4mlmo 5b carcuit,

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 conni o, p mvm63fhhl;02v*o5daavected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistor i5vhm ,603p ad*v2ovmf ;l hioas

参考答案:    
标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to an ideal batterf5nv1ls; r)hn319d ; t bnjjwazpq4g*y of constant terminal voltage. At the moment contact is made with the battery, the voltage at; 4;9q nfdn w v)*ajpz15gjb1rsnhl 3cross 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 resista8c;qov5- s w. +)b 4om tqkttznzd;1qvnce 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 and resistance R is coxslrf1 9zft.8 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 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 batter 5ml9hnv:6eeuy. The time constant for the circuit represents the time required for the curru el5vmhe69n :ent 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 connectegyyv : fhyqm37* al-.yd in series to a battery. The battery is suddenly removed frmq.3yyyl fy:-7gav* hom the circuit. The time constant 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 samy/f;4 (dkbmxe e units except:

参考答案:    
标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor is connected to io:d2xixuspy b) f,(6bp3 zd2an AC power supply. On this circuit, the current

参考答案:    
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is convm 9 y,d7uied5k0a6t vnected to an AC power supply. In this circuit, the curren,mvuaed9t 7 k0yiv65dt

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 whar/g6dm o*t v4*wq+ijo7kjw i,t factor when the frequency is tri j6gidko + rm,*t7q/o vj*i4wwpled?

参考答案:    
标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the frequency of the AC voltage across an inductor is doubled,hljt5 b oq42vzg*,9nj the inductive rea v,gj2loh*9z t4nbq 5jctance 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, thum.kn p/te5qc*9 kp4k e inductive reactance opu*c5kp /t4e.mnk9k q f that 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 circuit, thepwzk ( 5je7rty( ys;1q currentksyt5(p rwqe( 7;z1jy

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The capacitive reactance in an ac circuit chane qv60 s7zu+szges by what factor when the frequency is trvzs szq0e76 +uipled?

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 approk/x 1m3 c3qgqhaches zero, the capacitive reactance of that cag xk3q m/3hqc1pacitor

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 ca)6 vnj 1ams8av9vjtz1slv w41 *l0w anpacitor in a RLC series circuit v )sa6*a1 1zj8wnlvj ma0nvs94vlt w1?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The power factor of d 6u08 .v htc0hyth;l wqw*bo/l cy5-yan RLC circuit is defined as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuid,us8n5 /eat kt. The impedance of the circuit increases if R increases. When is this statement true,ka te8s5/und ?

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 circulx8,+;iwl n ycit 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 circzo0x/+.rch ks it8zx ,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 both double in an LRC se58bg7i 3) fex ,kp;gd8tb b o6rl6zgberies circuit, the resonant frequency of that circuit wbxe6grl)5kpb7 ;g6 t8 o e ibd8f,3zbgill

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 l*i3a tuqi23jresonance,

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
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a series RLC circuit occ r xq4k ea6ab.rl.n29udr .:kdr.p.dsurs 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 ro0pg:-7 ,nvhe-nosn lg tating 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 vectovn 0npoh, :lse7n--g gr 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 magnetic6ssg7rf o(gt-s f,6 dj field of 0.20 T. Find the magnetic gs6,df7f o(6s s rtgj-flux through the loop when the plane of the loop and the magnetic field vector are perpendicular.

参考答案:    
标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating in a uniform magnetic field--vj7k7rtx *k/y ebd d of 0.20 T. Find the magnetic drte7 x7dy- -kj/b*vkflux 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The cross-sectional area of an adjusvk2do6hm4ri. 3 rdfz mt2n* l7table 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 chaz x)jpf ;q n +.zo32d(ur/oujqnges from $4.0 \times 10^{-5} \; Wb$ to $5.0 \times 10^{-5} \; Wb$ in 0.10 s. What $emf$ is induced in this coil?

参考答案:    
标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil is wrapped with 200 turns of wire on a square frame with siv7nreb/bg.)oa ss87r w ybt2 a1-.c nldes 18 cm. A uniform magnetic field is appb.r7 obslc/g8nswbn7 t -v2.ea r1y a)lied perpendicular to the plane of the coil. If the field changes uniformly from 0.50 T to 0 in 8.0 s, find the average value of the induced $emf$.

参考答案:    
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 an a 3day;)jsv+ h(lib v2vth ov:.rea 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 ((zq7fxih 4 vnr8n xun,h:ts( area $0.20 \; m^{2}$ 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 of7 gd*qz xrv yh7 .qynby2h5+hq*h5)xb 60 m flies horizontally at a location where the downward component of the Earth's magnetic 2q5bg+zhr* nq. yxvyh7 yd75q h*bx)hfield 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 ar8cew u:o/dq cijc8 e;5:kpxj 0b/f7bt a constant angular velocity of 2.0 rad/s about a vertical axis through one of its ends w b8f eioc/xuw8:c ;:jkercjb7/qd0 p5hile 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 loops and a7,t3du9ckx 2:jzaqj,pq jif * 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 consdg4uv:hn re5:ists 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. vcao(8*mzr lg8ngyt 2 yr7 (.b Each loop is 12 cm long and 8 cm wir8 .lmzrtcygg8(v2bo7na(*yde. 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 output voltage of this generator?

参考答案:    
标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 100 turns of gt kah8mof7(,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 to con wwdoxf)6yl- 3cl mu-57ft4xjstruct a simple AC generator with an output of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050) ufmdw-36y 7oxj l xlcf4w-5t T is available. If the area of the rotating coil is $100 \; cm^{2}$, how many turns are needed?

参考答案:    
标记此题
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are designing a generator with a m;z3ez6xeeq2fp3pv* , gnlm,jaximum $emf$ 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 6n;i/vrv3pos nl 0k f2motor 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:    
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
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. T ca8 :tvt)h0g/ znwa2.ro s9pgu3s3kh he motor operates on 120 V AC, and when running at full speed it generates a/thzpau)2.nh :srts agk8c g 03w93vo 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 power supply. of *g7r 1cl:xe Th1xf* o :7rcglee operating current is 1.0 A. What is the start-up current?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resiss-( spb)b k7wf/7kqi1yegl 7x tance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speed. What is the b/f17yx-bsp) e7iw kqblg7( sk ack $emf$ when the motor is running at full speed?

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
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of intern6 +(kqo sf: qcq)4sslnal resistance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speed. Wh) s(f osqq:qsl nk+6c4at 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 ebq8. xqdu*, dis 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 primary of a transformer causes 14 A to flowx mz ..f(*wgs1l7eroa ,tjdv3 in the secondary. How many turns are in the secondary?d .1fmteza g.r *7ovlx3, swj(

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 necepft x*hs1p:c .;v oi f,v rr03f32hcz 47mwjhdssary in a 110-V primary if the 24-V secondary hxr17shr3t0iz.* fp:ff3 d w c2vp4c,mo ;hhv jas 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 coik(m a6(xt3fk 6jr cxgt2 +x)s4vfu s7*swlk4 al and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is the css(3ktw6jk2v x t6 gxs*k) u(f+ ml4xrca7f 4aurrent 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 transformer. Assuming 100% efvv2g -di+r6ek ficiency, how many amps at 24 V can flow in the secondary?gdk+ i2-e vvr6

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 w +ft4ncdc+oiat971d mnrx: a:.4t ,vf7o td jneon sign transformer provides 7500 V at 10.0 mA. The primary nm acfr:odf7d4c x:vtto471,ti9wj +n t d+.acoil 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 h m7k n6)wcg1vyas 60 turns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what volc17vknyw6 ) gmtage is present in the secondary?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil uyk-yfk;vuh06bf ag 4xmz.a/ b uhl90xca20, and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the pri / fy604lu yu,0fk-xcabgvaz xa2uh0k;.9mhbmary, 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 ou *ajldsmcojn4u jrw-3yz2v6(4/q:secondary has 200 turns. If the input current at the primary is 100 A, we candq o 2:u4/*ajr43j 6wczols n(myu -jv 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 sece- bryolx/91eondary has 200 turns. If the input voltage to the primary is 100 V, we can expect the output voltag- 9 oxyreb1/lee of the secondary to be

参考答案:    
标记此题
86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 turns q(g 2j v1jqqzrw +i8q/2ivg)h. If the power input to the primary is 100 W, we can expect the power output of the secondary to be (neglecting frictional los (w2h+8gr /i qq1qg)q2vvzijj ses)

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 atui1it cf4a6r1 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a powe 46 11fiutiarcr 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 voltage is usually stepped vy3:p 6xgl( fesz/6kp)2bt zkup to 4500 V by a transformer and transmitted through a power line of t2 vk6gztx6p pz( )eykl:3fbs /otal 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.sv kzy d,*2g+go7.xwf The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of wvo k*7+ .x2,zydgsfg 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 l fspgb(0t 9w9f1ze7uzong has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What (fz07gpbu 199wztesfpercentage 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 lon 1dbdfjci;i -zfdg*n y5 d)w7/g has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy is lost when the transformer isw-id*g by 1cjdd;f/z7f5id)n 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- y20 .1gn/qi yf2i ijg9qe7sk6o to7hbW line at 1000 V. How much less power would be lost if the power wer2fi726ioh.gqin 9ygbs1/o0ejy7t kq e transmitted at 3000 V instead of at 1000 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
93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The output of a generator is (4 y dan0ge3vkm5mlf1 440 V at 20 A. It is to be transmitted on a line with resistance of 0.60 W. To what voltage must the generator output be stepped up with a transformer if the power loss in transmission d4ykaevmnm501l(3 f gis 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 much energy is stnw6q ndmkjeff 5*66e6x 3 (zinored in the coil's magnetfek6f6xz 35e(dm * j6nnq6nw iic 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
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit conta7sq z c sqd73bvq.rwo*(vt 3c1ins a 6.0-W resistor and an 18-H inductor. What is this circuit's time consts*v 3o(177 rqdbc t.zqq3 vcswant?

参考答案:    
标记此题
96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the peak voltage in an AC circuit where the rms voltage is 120rly 040)gg +wmp2t )kaceo d+q 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 tah5*f i/igo nvnk ru28c4p2npn5+(s uhe peak current?

参考答案:    
标记此题
98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC outlet. What is the reecu3h0lfrenu( 0 e.6p 7cmos.sistance of the laesp0c7eh.3l fn6ru( om u ce0.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 theyi bucz 2js 80 6jt049dojonp8 peak current through the resisyn 428uojbj6do9pc0 80i tjzstor?

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:kti q-j90bc)rdca/)g94l pu cj) bdl lh2o) h 120-V ac power supply. What is the power dissipated in the rcjc ji)4 k)0h /b2 9:cr o-)ag)pduldbt9qhllesistor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a r*u we/2tex6u50-W resistor is $I = 0.80 \sin (240 t)$. What is the rms current?

参考答案:    
标记此题
102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W resisuerv5gws +p:9 tor 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- v 7f;lfi0hm)mo*ylp-W resistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
104#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the reactance of ae,. 5lr :y lwbc+jm/cj ;+,bqhynaat2 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 1000 Hz?itqoy/ h/t25j

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 14.0 W of7g;u hoio94ck 3)g3w u.irz zr-c9z jj inductive reactance?

参考答案:    
标记此题
107#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary for 157 W of inductive react 1ao,aj-w+3:vyqh aw hance 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 ir7 p ,edumg w5a h+h6hnpa-m*/n a 60-mH inductor when 120 V AC at a frequency of 20 kHz is a*m7 uapa n5m/ph,hrd+h ew 6-gpplied 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 fng6;fzja)c5 coil due to a 110-V, 60.0 Hz source?

参考答案:    
标记此题
110#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the capacitive reactek yrq,h +l7k,ance of a 4.7-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 capaczqpg/ ) p7e ex-i4la/ghc-/alitive 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 ha9+, c.oq8u:d9x kk7e befjnb rve 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 / wr1-sczm5 1 t.vsek whr30kxof a 0.010-mF capacitor be 100 W?r 3s 1-mctk . wvz5he0sw/x1kr

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 andpi x crr-9s 3.gk8jnj o/gnm bcbv:(4* 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 3jnpado. /v, g)r f01sudo kv;resistance, 15.0 W inductive reactance,r3v0kjp go/ )af;d., vduos n1 and 10.0 W capacitive 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
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 c1+- g-msi/fbnvc; yd100-W resistor, 20-mH coil, and 1.0-mF capacitor are con-1dcnsgvm; c-/ by+ finected 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
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 re +wdr:b,;+8a1x *badaxpponmsistor, 20-mH coil, and 1.0-mF capacitor are c :ddaa+rnp; 8axom wbxb,p1+ *onnected 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 n6y3d( 7m9al -xrbz wdwith a 20-mH inductor, what is the impedance at 1000 H dxl- 7rawm36 (dyn9zbz?

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 inductog9zhbbwwbp 2x-r v:+jv+ i(o6r, what is the phase angle at: pg- v(oiw2 +h+rj6zbbbwvx9 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 serielgy c( trn-3zqc9 bi :svd;2t2s circuit with a 20-mH coil and 1.0-mF capacito3irst:;y gctv9q nzc(-b 2ld2r for a total impedance of 100 W at 1500 Hz?

参考答案:    
标记此题
121#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following capacitances is needed in series with a 101l)z 0- wkr4 n6zz4xmllcyh q)0-W resistor and 15-mH coil to get a total impedance of zrk zn41x4m)qcwyl )h0- 6lzl110 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 z 33+ (puyixcvrbz1ews 4il : m/7l,rtat 5000 Hz for a total impedansi3byw1/l4vet + :z, 3ix ulprm(7crzce 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 pusls.qn5gv4 gb,iy +** cm od-yt in series with a 100-kW resistor at 1.0-MHz for a total imp54q, ysgmg*lso -* dyvib+n.c edance of 150 kW?

参考答案:    
标记此题
124#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected in series with a 20-mF capacitor. W9 g7km 8ut ,n4aii+ov *2upe *sa4puzbhat is the impedance at u4k*im4e*9gb8sva ap7uu + ni,t p z2o1000 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 in series with a 10-mF capacitor at 1.0 kHz for a totasgt 4mhb514e7po*r 4k lwgy7u l impedance of 4hr4 upwb7* tgg1yl5s4ek7m4o5 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 125*ofwnx7 nv fu +qrc6kd.k +o0-mF capacitor at 1.0 kHz for a phase angle of kxr6ok on.+*u7nwf2q+ vdc5f $40^{\circ}$?

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 xsp -l-v/ v.ixwith a 30-W resistor at 1.0 kHz for a total impedance of 45 W?xx i-vlv- ./ps

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. ;+vuad k4:e h myryl*.ibd;-z What is the phase ank e*r da:v;u+4i l-d; y.byhmzgle?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
129#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows at 5.0 V and 1500 Hz if a 100-W resistor, 20-mH coil, and 1.1wp u8di yk)/hk:h)qp 0-mF capacitor apwqui8h):k1/p hkd y )re 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 consiulg784.mwyecuc)v;g c y(u6m sts of a 100-W resistor, a 10.0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What isu m6 )(y;.u7wcluyg4cge 8vcm 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 capaci v*kf20novq(c7y0s vltive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power sourcef0 vcvkv* 7y2(q0snlo. 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 angzay+j1d* +d x s1lc5yele for a series RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when conds11y ejxl+cy+d5z a *nected to a 60-Hz power supply?

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
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessar il61x*p; 3x;c drvkyly in series with a 500-W resistor for a phase angle of x* lv13cr 6ixkl;;ydp$40^{\circ}$ 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
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 = 10.0ogk(co :07nk:hcf4ye mF. At what frequency should the circuit be driven in order to have maximum power trans c ge:0o ch74f:(onkykferred 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 s od.e 2-u ujiu7g,2s5zt vv-jcircuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 uvgjv25ju ezu-i -.sds2o7,tW capacitive reactance, when the circuit 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 AC circuit ijc 8wz(0,ounlo8t ho2dgt; 4is $63^{\circ}$. 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 t5m*dd3imfjx1m x ) ,f+ek c8i30 W. What is the power ffim 15df+,mjt8x3c xi e)d*kmactor?

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 b9t:en( 4kf.n9c3of fzq:mvg a series RLC circuit containing a 50-W resistor, a 10-mFbzn9.k 4 q(gf etc9n3vmff:o: 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 frequency of a 1 s7;lbjtn9i .y *-zwwc.0-mF capacitor and a 15-mH coil in series?79n wzlyb ;*twc-i.sj

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 k1ot2s 9gy00o:z qista resonant frequency of 10 kg 0o1t:s9zokts0i2yq Hz?

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 nrw a0x-;9.fd bl5i 3;sufo zgseeded in series with a 3.7-mH inductor for a resonant frequency ds9 -l3baowu;5i;sfg f 0zr.xof 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 res - anc*:i/99 oiqyy6rkf 9k1qw9rq yhmistor and a 40-mH coil if r9*cw/9q9o6 q yhai:yriq9-m n ky1fkthe resonant frequency of the circuit is to be 1000 Hz?

参考答案:    
  • 答题人:
    •
    总分:142分 及格:85.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 142 道题
    本系统支持习题练习，作业与考试三大模式，作业考试自动评分，成绩排序一键导出，可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

    试卷内容到此结束!   © 2024 题库网 (https://tiku.one)版权所有

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

    GMT+8, 2024-7-9 06:14 , Processed in 0.732493 second(s), 305 queries , Redis On.