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 unit89q 7 p8ojeclb+)clj+jdn7qfk- ek p5 s 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 inductiotxm s, j;q3l:9 thbi6tn 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 producesqd*t :(5/q0jybjk rtomuke)g ld- 11p what kind of change on the m tjr5*e0gqqbd k1l-(ut jd py/ko)1: 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 btdk;c w 59aq u,2el0nproduces what kind of change52ac0 l t ,undbwkq;9e 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 kjzky+ts w f8:f, /cd1 k3nbx8aind of change on the induc d+ 1ay:k wzfbcsf8t,k38xn/jed $emf$, 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 hdy2.4.zqga.dx/vnmr 7yit+; su) vc 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 7os p ce2az-0xof an induced current in a conductor will be that which tends to produce which of the followin2zpoxe0a-7 s cg 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 flj0k:02hs,ez yb+ss u,z3 xns jat on a horizontal table. A bar magnet is held above its center with its north pole pointing down. The stationary magnet induces (when vy0n u,s32k , h+zzsj sx0eb:jsiewed 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 h1b)j))vndcb l7x u oqva;(q c+orizontal 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 v1 )clqdqb7+av())j; cnoubx(when viewed from above)

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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/c9 bnz jnp1qlv+w9z, vector points straight up. The magnetic field vanishes b1zqz9 vj nwl+cp,/ 9nsuddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades?

参考答案:    
标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a level table top in a region where thuof*3qk7 ylh+ e magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed fromuohf 3 yk+l*q7 above, what is the direction of the induced current in this coil as the field increases?

参考答案:    
标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a horizontal table top in a region where the magnetic f3dh2n wwg2ssju5 2;bgamr 6o3v wv, 3field points straight down. ,sarghwv3nvwgd3mo ;26sbj 2wfu3 2 5 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 pxbnpg-dl/4 4gon 2 j ds)7u3wtable and carries an ever-increasing current northward. Two coils of wire lie flat on the table, one on eithedw4bj ug g/x3n 2spd7p)4-onlr side of the wire. When viewed from above, the 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 loop of wire with the north pole en 60o+n t bitr4chhs e3sl/;yd*tering first. As the north pole enters the wire+hy *0hd cbtt/nsl4 ;3is6eor, the induced current will be (as viewed from above)

参考答案:    
标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated avqf;aleg) gv08 n ).mj9aj:iyt constant angular speed about an axis whose direction can be varied. In a region )mvnjlea f0gv;jai8)9.qy : gwhere 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 wire is rotcz7ka ;t.np/ -+n (rplhi z3uhated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of thehpap+ -z/3 in7krztc(lu.h ;n 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./8ueh,t uh363b eyobn nfqlz(s h z3()
参考答案:    

标记此题
18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Lenz's law.
参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
List the three ways that anv)cl5k)d ir3t $emf$ 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 field. pst3(d hrcm(.v,c 3tstgq f7*q4h)nb + l+yvaThe $emf$ produced in the wire depends on

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
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in 6)ttf n4gh i)lthe east-west direction) is moved northward at constant velocityg6ftt)hl4)ni through a magnetic field that points straight down. Make a statement concerning the potential induced across the rod.

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
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar rotates at a w3r1u japdu/8akwd 75constant 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 transformsh iz6k2bw e;q,

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
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 frequency of t787td; 1t rk gprv01 ycwhy 7l ljfkbds;zu-)9h-;rg9dpj7 lsryl hudk)tf vt0 ck 71byw;z871e $emf$ is

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device gkjr14 kem0.0 yl+ir ( du:yudused 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 th-m vi4/j 7xfj m eax2td3--tbqat

参考答案:    
标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the secondary coil contains more loops thanop11esuoc2i07m)uows) y-w0 z2zje a the primary coil thene2wz)oc11yue72 u0pw zoa0 m )ojs -is 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 contaiik p8(u.x,t +n)c bu7jro9k gtns more loops than the secondary coil then it. oupt ()kct+bx 8iu 9gnjkr,7 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 ;+:yewccvs yhi53 sl*t

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 circu7vce5xs3( mpk6rce 4esl) 9yoit,

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 cipoclfdcr 0cx7ig-3x bl*3 o8-;f-s ponnected in series to an ideal battery of constant t x op- p8-s-bl 0c7*r glof;3dcxcif3ierminal voltage. At the 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 inducto(0s9x /pjk6mjzm md 7mr are connected in series to an ideal battery of constant6 mxkz md(s/m07mjjp9 terminal voltage. 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 d92 (*, 06r fgoqvnom yz;vqsmresistance 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 resistara xj5i)+ ;m(qho 0xponce 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 battph1 pct(xs: q6ery. The time constant for the circuit represents the time required for the current t1hcxsqp p:6(t o 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 connectzq0tw2cjcf( a8(vz(p ed in series to a battery. The battery is suddenly removedcc2t 0z(fjza( (qv8wp from the circuit. The time constant for of the circuit 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 followingfa;8p0-:lku0lri x oj have the same 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 nejp4 c*8iih6 to an AC power supply. On this circuit, the current

参考答案:    
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is connected to an AC p- zo5 tjnpka1o( pb0zyc h2*i0ower supply. In this circuit, the currennpk*jiht 1zcpy(0 o5 0ab-z2ot

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 chanp,210 0yxe aj6aibyobq 6n2vzges by what factor when the frequency is 06a2b q2opj0evyx a6 nizy,b1tripled?

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 an inductor is doubled, the inductiveqe ch+,y te-rhrr62o hc/+:c3j(lmsf reactance of that in tr -f 3ljrc/2,yhsr6eco+chh + m(q:eductor

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
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 9qh33gk ggehcg .b3e 4inductor approaches zero, the inductive reactance of 9q33e g e.h 4c3hgggkbthat 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 tov)fl(-lx 4tyi.rm d )s9jazo+ an AC power supply. In this circuit, the currentm9o ld-s 4. ()x+lj ifryz)tav

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 reactancqbct x7op x(f147ox.re in an ac circuit changes by what factor when the frequen (.1op o4t7xqr bxcx7fcy 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 capacitor approaches zero, the capa7x4cy buo3wouy:(f;)b/jc*jrc v *g scitive reactance of that c*b uj73;ojcc orv gw4 /:ubf)ys(* yxcapacitor

参考答案:    
标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle between the voltages of the inductor and capacitor in af m4w8ryalovrjz7e 7)n+qv47 RLCj)wy o7lev7f7 n8ma4+r4zr vq series 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 define,ozn0feph5 -cd i i6.d9 zge.sd as $\cos M = R/Z$, but the phase angle can also be calculated from .

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
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 circuit-fqq-nl3oj p8uqtl x,q 7- .ym increases if R increases. -y7-qfq nolq-, .xqtlm3up8j When is this statement true?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 cirm/ 8gz h.6sr -n2;zrv5zgg0)woi sjab:lr(y dcuit 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 seriri2 1k0 (tyre.*uhk jhes circuit. 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 an LRC series circuitbvx0j* , 2se+onv3tzj , the resonant frequency of that cirvj3*e+sx no0 tvzj,2bcuit will

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
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit that is driven.).4jov 1i wyo;w uhepb1o2uq by an AC applied voltage. At resonance,

参考答案:    
标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a series RLC circu wfp0l5zbxsn5f)yi l- 52h,x dit 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 rotating in a uniform magnetic fieldzn1u0 4j91 k b+jdg b2i*rrhdx of 0.20 T. Find the magdr21* gjkijbz+u91 0dh 4 bnrxnetic 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 0.1/bbs35rev(2 g kzgl5 w0 m is rotating in a uniform magnetic field of 0.20 T. F25e (zbg vblk3gs5/rwind the magnetic 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 un-qvmo k,3p*ubiform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the lkq3 ,obpmu *-voop 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 adjc5cpbcc eg83. ustable 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 chankx; i*jp tuc-4ges 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 withonq4x5-p 4jyvowv(v i/x i)*d sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the (o pv*)nwjx-/vxdo44i yv5q icoil. If the field changes uniformly from 0.50 T to 0 in 8.0 s, find the average value of the induced $emf$.

参考答案:    
标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A square coil of wire with 15 turnsqu9hqi mgy- t,:ot( t/+2r voj 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:    
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
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil of 160 turns and af nq99xb+gnp; i8xx9prea $0.20 \; m^{2}$ is placed with its axis parallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 T in the negative x-direction in 2.0 s. If the resistance of the coil is 16 W, at what rate is power generated in the coil?

参考答案:    
标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An airplane with a wing span of 60 m flies horizont 5ru.0o-s-cn9cq fj lially at a location where the downward component of the Earth's mucli9-jrn s - 5ocfq.0agnetic 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 9*ff3n dp y*pxa constant angular velocity of 2.0 rad/s about a vertical axid*xn9p fy*3pf s through one of its ends while in a constant magnetic field of $5.0 \times 10^{-5} \; T$. If the magnetic field vector points straight down, what $emf$ is induced between the two ends of the bar?

参考答案:    
标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator has 50 loopbz ./qr6 bltw9s 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 wire9; )dco ogsx/l 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 l-5z8sqxvd ;v80 rectangular loops on its armature. Each loop is 12 cm long and 8 cm wide. The-z; s5vxqldv8 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 g+2qi0 ,ods(nrkwzxrgv 0.; ks i92tmof 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 g+ rebrdt5 ;pe3enerator with an output of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is available. If the areatde3p5rr b;+e 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 wiutevp;og)y9uj0a( +q th 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 resi4f y yto)xh6/m6hm/ fdstance of 6.00 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 motor have a resistg wqd0 4/ tmseoau0 f),pz;vq3ance of 6.00 W. The motor operates on 120 ot e,ad u0/q4w q)3zfsp0;mvgV 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 power sux+n2g kbmw. 8c1xngw(pply. The operating current is 1.0 A. Whawm8g2 nx1b(. xkw+ngc t 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 W is connected to nnze(zz24 s,na 24-V power supply. The operating current is 1.0 A at full speed. nsz2 en4(n, zzWhat is the back $emf$ 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 internal resistance 6.0 W is connected to a xqo:ik9at q54qvo vb. qr1,jva*z+ n+24-V power supply. The operatingbxno+,v qr *j5o9z1a.:v iv +kqq aqt4 current is 1.0 A at full speed. What is the back $emf$ when the motor is running at half 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
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 voltagef2bf ;fr/:0 -x(sa due8hrqsz 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 v q-x5 ,r0 f2xb yy8iwx1gr3elof a transformer causes 14 A to flow in the secondary. How many turns are in thqgwlrxe vbr312xiyy8 -x 0f, 5e 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 necessarck0 .5xnn hm0 e+,tvwsy in a 110-V primary if the 24-V secondary has 1k0+cn.,xw 5 0hte vsnm00 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 p/) xwzghjt* y ;i6v45vj1tzw 2000-turn secondary coil. If the current in the secondary is t ztj v/;whg yv4j*z 5piw61x)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 transfx** vujgede32o(rj ;e/5rz)rslx. f e ormer. Assuming 100% efficiency, how many amps at 24 V can fleoer gslxe *zed(vuj x;.j*r2 5r 3)f/ow in the secondary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer provides 750vq3gq:;c1jd jjtcd4 80 V at 10.0 mA. The primary coil ope dqvtj 318dj:ccq;jg4rates 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 primary coil all;i 7hlh q(hmu2, 1iqmp,(yand 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what voltage is present in th2lq7,1pqylhla(m um i( , hih;e 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 and 300 turns- py xgm -1y)ylfwh7: 6jcy/wc on its secondary coil. If 120 V at 2.0 A is applied to the primary, what current is present i6- : hycwgy/-fy lxc1m)j7wpy n the secondary?

参考答案:    
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 turns.ak89+ h0p8 tko6w q-ma 0wv/qoyn jwiw;tsb(1 If the input current at the primary is 100 A, we can expect the output current o t wjm(8aw1t wp9ik/;bawy 6+qhoqk-80vns0 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 transform5ol;w o/wu2jkcrrks4xsj( 68 /c;bh5b wbq7mer has 100 turns and its secondary has 200 turns. If the input voltage to the primary is 100 V, we ca c82/m(c xwq rbsu;hkb/bo5 j6 7rkl;sww45ojn 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 transforgcvp-/q r)o6b-9w s 3jp3f(uul;h grnmer has 100 turns and its secondary has 200 turns. If the power input to the primary is 100 W, we can expect the power output of the secondaw)nr vpgscrpgq-(uouj3-;69 3lhf b/ ry to be (neglecting frictional losses)

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
87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of cuf;2t pb l9er15*yu9ncaa:wnc//cg .dn, pqrqrrent at 120 V. The voltage is usually stepped up to 4500 Vcf2uq9*;g :nern d5ct9/lrnp /w.ca 1bap ,qy by a transformer and transmitted through a power line of total resistance 1.0 W. Find the number of turns in the secondary if the primary has 200 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 z5:gtdriwtgi8e*:a9 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power lineai ez8:i*t5rw :gg dt9 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 6a2gl ;a(i:ccd 0 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 t l;dgi:aa(cc2otal resistance 1.0 W. Find the percentage power lost in the transmission line if the voltage is not stepped up.

参考答案:    
标记此题
90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long has a total resistance of 0.60 W. A 1(bvmho; m .:kzvfw,tgenerator 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 1k;ovmm.wfztv: h, (b 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 hasr6 cd ef5,rtm) 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 percent 5rmfr c,t)d6eage 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)8h2*g6s+c+m hbtsm pea1y otc+ lltdw5)o- s V. How much less power would be lost i)+splh m+y8b* t +lt oo62c1gd5matss) c-hwef 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 transmi 4t7wu7n jr);3 lo;kq+6-r ihqwb js 1xkzs)wstted 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 q- qs)zxr jrsi6knk3 lws u7t;h1+; wbowj4)7loss in transmission is not to exceed 0.010% of the original power?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a current of 5.0 A. How much ened 8-h.j/( f 2aii c;tc*5pruo4 3eaa pwj:injwrgy is stored in the coil';w4itnjuipa5df*-ewap:j2jr/ hc a oi3(c.8 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 cpzahr7 9ms 8+e4 hl3svontains a 6.0-W resistor and an 18-H inductor. What is this circui973sz4m p h sv8ear+lht's time constant?

参考答案:    
标记此题
96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the peak voltage in an AC circ.j/et i8p -nk8 raw7xruit 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 i4tl2 ambb ercw8s5na:66ed.*y7nolk nto 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 a 120-V AC outle: x3jo+h0e)yam:1(ik t- n9cphlpa kw0bzm-qt. What is the resistance of the lamp?0p iojmk1p0w ) l-k-:x cteq (:an hy+m3bahz9

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 connectedxp ;qj6n-+a (ewwvh7u to a 120-V ac power supply. What is the peak current through the rh wexn-6 vqu(w+7pj;aesistor?

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 connecte / wx)x3onkq-qh cdte5)2hw5pd to a 120-V ac power supply. What is the power dissi3hp2qokc-w5qx dt) ) nh xe5w/pated 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 resistor *48kj)966mfh x g 9heiq2p; nkohh4uglmyl v: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 ar/t9 e 6,fftcfmp.(ef 50-W resistor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

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
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W n5hpi,y9t;-3 8mp)rnuri etq4/ dj v dresistor 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 a 1.0-lqev2c sj/e.be c:d gy(y+ +i8mH 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 1000y8s 0am, jfb2o.zoe8e 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 xg23b).absnq a 14.0-mH coil 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 inductive reactan,*xgvu. zw.0mg5jlw nce 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 inductor0(l w*:fneg jd90 6 rfm(i o3e+vqzw9vvxbz 2y when 120 V AC at a frequency of 20 kHz is apwq2zmf *dl 9ox 0w 3:i69jrfyev0+zbg n(( vveplied 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 throug-,zug66d bc q jrih0*rh a 2.50-mH 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 ,ppx0ucm(c /k,v 4pspreactance of a 4.7-mF capacitor 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
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 lpj ti*eq4ma- t.jj3; capacitive reactance at 10 kHz?

参考答案:    
标记此题
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency does a 10-mF capacitor have a reactance oj:m q7z m8hhp- py:n.if 1200 W?

参考答案:    
标记此题
113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will the capacitive reactance of xt5 z wr;jb(2n*bh v+da 0.010-mF capacitor be 100 Wtx(jbh wdv;+2r5 *n bz?

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 cy-4hjk 8t00uvxvsy7qix7 t8and 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 n+f27; bxrqap W inductive reactance, and 10.0 W capacitive rq ;r+27pfxn abeactance?

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 impe(04u5(zdmov mtap ;yi/idic0 dance at 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are con0ovz/mdtp(u 5iy 04d ami(ic;nected 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 1500 Hz if a 100-W resistor, 20-mH coil, a: ajt.st03w chnd 1.0-mF capacitor are conj0.cwht:a 3tsnected 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-mj l5ce styc:::H inductor, what is the impedance at 1l5tyej: c s:c:000 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 resistore* ivehvp hedgt5e)- 72y-0ip x4*jyk is connected in series with a 20-mH inductor, what is the phase angle at 1000 Hz?*2vvx 5 )it ieyjkepe*he7 hpd0--y4g

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 circui4ii083nwgmbs)h lciom/9 enh+n/ -mq t with a 20-mH coil and 1.0-mF capacitor for a total impedance of 100 W abmm 8 -0n qg/ihs/n3oc+wneli 49)im ht 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 ca i6i*sj+ox*t e 3odw*o9h lto+pacitances is needed in series with a 100-W resistor and 15-mH coil to get a total impedance of 110 W atoiwt+*o *o3*tx9s il+h o6d ej 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 infp/1omtn1,vhb*/j z t series with a 450-mH inductor at 5000 Hz for a total impedance of 40jn /,*ftmh ztopv1/1b000 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-MHz for a tou /n r: f;8d uu/z:gkim6rxvif5e+fn;tal impedancei+6iknur;:rf/5fugde/; 8mv zxfn u: 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. What is tad 7a y74tczq,he impedance at 1000 Hzqt74 cd7a, ayz?

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 ;oe vvnwmv:: . kl)ww:with a 10-mF capacitor at 1.0 kHz for a total im)wvm o;wnl ::kevw:v.pedance 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-by+vjlks(n t97)grsk .0 kv5omF capacitor at 1.0 kHz for a phase an ko 0lt)9j.+svn yg(r7kb5 ksvgle 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 needew2 2cwb3 agzkw7,vd l.a77rlt d in series with a 30-W resistor at 1.0 kHz for a total impedance of 45cg,r.w atv277wll7 ba2zk3 dw 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. Wha-8 d9 kcb5;lk7 pwpxlyyev. t;t is the phase angle?9ly;pyv ; .xtedblkw-c8 7p5k

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;)d vgq -gkno1 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connected in ser;gd-vo kn )qg1ies?

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
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, mp66dbug9o h( 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 currentgud66 h b9(pom 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 capac5gt*4spv d j*o kb)h.1bvx3 chitor of capacitive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power source. What current flows jd.1s *v5 *h)cgob tphxkv4b3in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a series RLC circuit containing aw nsyhwh+qy(1sr 4w p1qk7 ;7s 50-W resistor, a 10-mF capacitor, and a 0.45-H i yynww1+7qwh;h4 srks 71( spqnductor, when connected to a 60-Hz power supply?

参考答案:    
标记此题
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W resistor for a phase angle mm r2, -jj:,;sb qk8in v1rtxnof , njktr v:iqmm;-r21jn,8xb s $40^{\circ}$ 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 mFwp 2 s8s)ruohk)gn -p +)k.zph. At what frequency should the circuit be drivwkr)+k z no.)gh8su2sh)ppp- en in order to have maximum power transferred from the driving source?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
135#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power output in an ac seriesmn6yx4 oo7e4m circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circui4xyn m6mo4eo7t 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 circui48b+a8g ui t72lwjxvg64ajge t 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 oz+9evgiu-0;rm yyklw*8 93k (hvbbq60 W and a resistance of 30 W. What is the powkmvo gw9b+ b ve;yi-0*uhqr 3yz9k8l(er 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 *ujpbt4iq5 71o e; ra0o;syjw 50-W resistor, a 10-mF capacitor, and a 0.uytobreij;jsap qw*7 o; 4 05145-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 1.0-mF capacitor and a 15-mH coil ink :id8+x3cl)s is hcgq sg+;/m series?cgsg cii/xl+ ;)d+sq sh m8k:3

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 se)uwp r5ch;/ cnhwo9 )hries with a 4.7-mF capacitor for a resonant frequency of 10 kHzh/o;h ) c9c)n hpwwu5r?

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 ne )q-s h43pn-xycx jk)feded in series with a 3.7-mH inductor for a resonant frequency of 1xjkq)xf 3)-pns- hcy4000 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 resjazsx r33q,w+istor and a 40-mH coil if the resonant frequency of the circuit is toa3s3zxrw,+ qj be 1000 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|手机版首页|使用帮助|题库网 (https://tiku.one)

    GMT+8, 2025-7-15 09:02 , Processed in 0.773702 second(s), 306 queries , Redis On.