题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

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

本次作答已使用

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


习题练习：Physics Unit21: Electromagnetic Induction & Faraday's Law
本习题练习试卷来源于题库网 (https://tiku.one)， 为试卷打印版，您也可以在网站平台(https://tiku.one/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 80，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://tiku.one/test80.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: admin    总分: 142分  得分: _____________

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

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following are units of magnetic fluxrd* . kpv gva dw/ /gg.5adgwf-+2i*nj 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 states twnob6xyd3lu)4 b2l*u hat 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 of chauia,5. h q,k2+x bayjwnge on the induced ,x a2b,hw5ju.yk+ aqi $emf$, 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 9n7n)*mgql7h-t :(5bi-mf his iael sloop of wire produces what kind of chanq hi ht: in)gb7-5e*slmsa(9n7ilmf-ge 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 win: s ;fvbtl(z :*2x4xd -itfpdgia7(tre produces what kind of change on the induce n(sb;t-(a x t:t*d x 7lpdv2figfz4i:d $emf$, 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 fr7odm2f m) mdjspzv(n1ncl-yh8 v67g) zu4 a q;om a magnetic field an $emf$ is induced in the coil causing a current to flow within the coil. This current interacts with the magnetic field producing a force which

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 a conductor wi n;ywkf -qvyn50qckc 1,)wqi5ll be that which tendcvci nqk5y,5wqw0 nf y-k) q1;s 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 t8 *)pwd vif,bixm3i(x6q9 zp eable. A bar magnet is held above its center with its north pole poiz)xii w* fxi3e(v86b9dpm pq,nting down. The stationary magnet induces (when viewed from above)

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal table. A bar magnet is held above .tgclaby 02wm- 1 io/nam5pn6y49pnuits center with its north pole pointing down, a-46ip ynm t9ouy1pmwlgb0n5 /n 2 .caand released. As it approaches the coil, the falling magnet induces (when viewed from above)

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a tablk f3,ku ;:y:ntxukj0xe top in a region where the magnetic field vector points straig 0k uy u:3f,kx;kj:xtnht up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades?

参考答案:    
标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a level table top in a euu2i85zv+wy 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 increas5w2yz +8uveiu es?

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 th44dz f q0nq9al:x-gstuh 6+ ufe magnetic field points straight down. The magnetic field disappears sudd- szh dfqnt6x9u4g+ulq a4f0:enly. 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 ever-ilkob 4xf0mxc+ f1sa-a u2f i:5ncreasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, th+mk1f 5x4-ab:0 fs ifualxc2o e induced current circles

参考答案:    
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls through a lmllsb5 )c(nulx-wu :/ g81kxroop of wire with the north pole entering first. As the north pole enters the wire, the induced currek/lr(cnx:lm1-s lub u5 g8w)x nt will be (as viewed from above)

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 conxh0ewxc w-/h 6stant 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 /hxxcwhwe- 60of 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 rotated at constant angular speed ayq*;8u ,d5 wycm un9pxuo2 yrp zh)a(0bout an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the c u;) ouhxy0p8 5dmp (y2nqur*w a,z9yinduced $emf$ is to be a maximum?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.z6azg ikh ht+x1c 5t;:
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 an +4pmhyt. mh )x$emf$ 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. isod-4*) pgzz The $emf$ produced in the wire depends on

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in the zhvd7w,rqe :3east-west direction) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerni,7 z rq:evhdw3ng the potential induced across the rod.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar rotates at a constqyuxac/4.0r(k s m4e gant 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 t,)ef 5c uarvptp o8 8l;nb1n6rransforms

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 frequencfk5qrj2( 1 s4dpfd,eh y of the 1fp5,qdh(ed r4k fs2j $emf$ is

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device used t ocyzmhd*(i s-hjt 195o

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 thaa+.-v nkkun:j t

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 co,tvyiqjow(aa7+ q6gnw g1; l4il contains more loops than the primary coil then it is aaj;4g, nqw q16(aw7itlg +vyo

参考答案:    
标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coil contains more loops than the secondaryds8h h.ax ft3z: a*ak7 coil then it isaf3h8* dh zxa.a:sk7t a

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the t:ktt: b( bs6w :lp.uvpower input

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 circuit,4( ; 2ms1rke6sfxmie w

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 aj22;gj bcxxx33j7c51h) wnvo / saahxre connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistor ig1ohx /baa)7jxxcv 25;hj 32jxwcn3s s

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 battery of cons7zh 27rege1 i s,juc/ftant terminal i2crze,su f7j/e17hg 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 resistanc6lkgk/lnjv9c qx7yxfpnto 0e7 *oa 17-l0)a y e 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 wiz j21w feyj2v6. 7 ij7pg o*l)mbhoa+xth 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 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 l,progj+4rw0 to a battery. The time constant for the circuit repres4ojpr wg+ 0,rlents the time required for the current to reach

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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. c,p /sgrs9 ,ed,; nlt( vxd2yz The battery is suddenly removed from the circuit. The time constant for dtr2ng,vce;y,,9(s pz l/xsdof 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 following have the m :o5*oqir49ot,(alazii- wl 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 to an AC power supply. On this circui,.u4qjo tt, q: uja ta7aq-e:nt, 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 conzs3 :,jo gp+eaee8 1ghnected to an AC power supply. In this circuit, the curren3ajo+e z8:spe ,g1eg ht

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 frequei-ervg)6x iphzu5c5 * ncy is tri6ce5xhiz-urpiv * 5g)pled?

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, the inductivek13eizs3 f 6ww reactance of k1s36wwz3e fi 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, thekz 7 lk2-hix 9sk3sys8 inductive reactance of tha9k 2skl7iysxz k-s3 h8t 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 this circuit, the c /kpai v/ig)ppb,7k x/urrenxa ppgi7vk ///k,b)ipt

参考答案:    
标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The capacitive reactance in an ac circuit c+ 5sm j5f:cql z5/wzhlhanges by what factor when the frequency ic:jllhz5w+qzs m5f 5 /s tripled?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 approacheshl vttme5pm t/m; ,9/k zero, the capacitive tk mm,/t p/;le 59tvhmreactance of that capacitor

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 a+.zi ,oh mhiugn3gsm8z97d 1fnd capacitor in a RLC sem3, g9g mdi8z7sohf zih+1un.ries 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 drg*m l h3 cxsm 88z 2plxldyo,74yux6:efined 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 circuit inh2/:fw .m in i-i8jy 4 res8jiqlkmo,yx+f(7bcreases if R increases. When is this statemenol/ ji-hjm,y:n 8 is bki7rw8 m2fiqx+fe. 4y(t true?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedazgfqz6v1r9l 0ylu+ /rnce of the 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 i bt,to+gh 9*i+7t7fkwknjo6dm6 (ys fncreases 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 q:. sj+iiu5m z i v0xw)pvt(xjl4)g9hboth double in an LRC series circuit, the resonant frequency of that circuit will)s)4w0g.h 5+vplx: 9xvim(jijtu qz i

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 resonan9u tvb.l fu;q5tq;j6zce,

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 ci1hx43l q 39xdvwf.mqurcuit occurs when

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 field of 0gu 2yxwpd.74o 6f8qav.20 T. Find the magnetic flux through the loop 6xupfyv7 .qa 82w do4gwhen 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 radec ymsi1 05w2kox-8smd9da3h e 7qjfn occ-12 ius 0.10 m is rotating 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 vecoca7 25c1d-2cfxjw skmse-8nie mdy0 1 9oh3qtor 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 sj8e1 cyw/:os m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and swc:o 81/ysje 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 adjudbh2mo(1k b2y a1j-) hoq/bm vstable 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 chaxevdb2s 2xe/s )1eky n64dj3snges from $4.0 \times 10^{-5} \; Wb$ to $5.0 \times 10^{-5} \; Wb$ in 0.10 s. What $emf$ is induced in this coil?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil is wrapped with 200 turns of wire on a square fraacdvt/h,uqnx1 x + q.9me with sides 18 cm. A uniform magnetic field is applied 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 xnh dq a+9cxq1uv/. ,t$emf$.

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 wq j9nr. w27xleith 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 a;,(:*s pit o tfckkgm7nd 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 of 60 m flies horizontally at a locationu49vm,o*s 50p xtbrkl,ctfh3 where the downward component of to5u 3fh,lx4 ttc b,vk0r*pm9 she Earth's magnetic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that is 2.0 m long rotates at a constant ab +9ibyit :k8;st1y lnngular velocity of 2.0 rad/s about a vertical axis through one o1tn8lsy ;bt i+:k i9ybf 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 loops and a cross-sectional area of -gqsup .,q b2m$0.25 \; m^{2}$. 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 w81 2f 2ziuovkp-ai5jnire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced $emf$.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator has 80 rectangular loops on its armature. Each loop is 12 cm lo6)eabyri.+2 p f3d10lw y1c+jimq nrfng and 8 cm1i y1we+yirfa 3n2mr06 )dj.b c+qflp 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 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 wire of qs6cxfm:a(g d42 fjl8,/ syfvarea $0.090 \; m^{2}$ 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:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 gener: ia,5mo ib5ugq qetsjgfc wlk8-,c j: ,8(3oaator with an output of 12 V maximum whqou fikc ,3eqjlm 8-t,o8wsi ga(:j:,cb55gaen rotated at 60 Hz. A magnetic field of 0.050 T is available. If the area of the rotating coil is $100 \; cm^{2}$, how many turns are needed?

参考答案:    
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-tzss 5.q tkdn: s94;tp -xawjaximum $emf$ 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 mzo3w yd5eoy;z-e-* u.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 resistance o f9ouwyln v3ic 66++ryf 6.00 W. The motor operates on 120 V AC, and wyiuoy66fcr+ 3 +nwl9vhen 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 njc-)uzy+qv: resistance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A. What is the start-up curr )yz+-n vucj:qent?

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 resistanh: wp /nual+p-:n ki.jce 6.0 W is connected to a 24-V power supply. The operapn-wp nuja :.ki/hl+: ting current is 1.0 A at full speed. What is the back $emf$ when the motor is running at full speed?

参考答案:    
标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal reslle7f-eb3 hg2mp*8 ob istance 6.0 W is connected to a 24-V power supply. Thfgb he-l m7bo*3l2ep8e operating 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:    
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 vz3zh-r o y:4(vjlfe;o oltage 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 prima7 .h9gcj20lo rbjj)jxj2 xsrv:.e v0pry of a transformer causes 14 A to flow in the secondary. How many turnsxl2rcj..7psg 2j9vrj:v0jb0 hj oxe ) 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, hokt.m d(o dx 88k cbwp:1kil-y7w many turns are necessary in a 110-V primary if the 24-V secondary- dpwmlk871xc (od:i.8kbtk y has 100 turns?

参考答案:    
标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consists of a 500-turn primary coil and a 2000-turn secondary coilmxgqkoeq5r e: *q)d :c.mf/5 l. If the current in the secondary is 3.0 A, what is t:kqrxe egqoqc fmm*.d:)/55l he 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 transformer. Assumi t d-(d9iv4ixsng 100% efficiency, how many amps at 24idi tvx9 4s(d- V can flow in the secondary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer provides e+1hm h3dvn;ungh p327500 V at 10.0 mA. The primary coil operates on 120 V. What does the prima2 ;+1ph3h dum3nhengvry draw?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 priey9t dj9*kp c:q;yrpq8i)jk6mary coil and 300 turns on its secondary coil. If 120 V at 2kj8tip k*y p6cdqqry9e);9:j .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 gpog8gw ./to w6- m*ghon its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to tgoh*/wgtm8. 6-ggpwo he primary, what current is present in the secondary?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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)pox sf a11ae.2jqj w6 200 turns. If the input current at the primary is 100 A, we can expect the output current at the secondary to bw6aa21 fxq1 )os. ejpje

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 turnmei3- 3/j crdam-6d nys and its secondary has 200 turns. If the input voltage to the prima3ide -r/jcy3 -6 andmmry 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 tranyyhf) 7 :pgbykeuwrb-:( 6.niu 0v vc-sformer has 100 turns and its secondary has 200 turns. If the power input to the primary is 100 r:0 :nbcy7-)yughbiv 6.(wfykp ev -u W, we can expect the power output of the secondary to be (neglecting frictional losses)

参考答案:    
标记此题
87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of cuo 5 x4zym+ms6lrrent 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 turns in the secondary if the p +lxoy m6s54mzrimary 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(:tl-jhc psm 3 60 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 totalhl 3 -mj(cs:pt resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The9 ssyhhmi389o9/cv fr voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Fir893hshyfcs i/9v m9ond 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 0l3m 8pyyaf/jfqn 1e g6r:d7p0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loslq0 3g 6/1fafym je7y8:pndprs due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy would be lost if the transformer were not used?

参考答案:    
标记此题
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km longy h*nx:s/f7 mh 1tbiz5gsuf* dg7/f3m has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce eneg ffun/*bs xhyi*7f /m5: z7m3dg t1shrgy 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 me +r6gw il6fjro.d7 w-8/gampower would be lost if the po me+mrwd. -o8a/gf7lw g6rj6i wer were transmitted at 3000 V instead of at 1000 V?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 trdc q(sgto*(w crwx y,9n53h /jansmitted on a line with resistance of 0.60 W. To what voltage must the 9cnw/ s*xwohqd( (trg35 y,cjgenerator 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 much energy is s*x.fx 7+tmm1oqmh8q;:ytod 3cp 0imstored in the coil's magnetic f y+3f 80m1qdci:. mttq*smxmhoxp; o7ield?

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 inductor. What is wid ugji 6f7l+*- hm.lthis circuit's lui+wlg*7hd. f i-mj6time 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 1dkg9j8 urnl. 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 place,lx 56g ndb0 4sznge g;ys3mb-d into a 120-V AC outlet. What is the peak current?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 th*nam + hq46kdge resistance of the lad +h*qgnm46 akmp?

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 thrql ohto +rjtzc7)./, e peak current through.zo7j+ /htqc rtrlo) , the 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 2fel4)ueh0 jrue9l a*is the power dissipated in the rehe a24j)0lu l9reue*fsistor?

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 resvhb1*71 h nx8tbfdd -iistor 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 5fr2jd.s+ vwwy6cz+ 2g0-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 a 50-W resj fn bx2ybj63;2.xj) )pxag kwistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 indr2*8 fgxy)wd/or vsw( uctor 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 1s-d wum5bg2o*enab uj: k/ -c1000 Hz?

参考答案:    
标记此题
106#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will a 14.0-mH coil have 14.0 W ou3b et ;ez1;,*o9y ayizl:inif 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 reactanvg9 p34l7vj9vq 7 evhyce 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 ,v*0 t b8zc dqpu6 s-g87(cxsdkarnz :inductor when 120 V AC at a frequency of 20 kHz is applied to 8 nqc( 0xu- cs,v:dkbz6gaszp 7t*8dr 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 t/lsi -den2oapb*11ra4tv+r g7 jm6wqo a 110-V, 60.0 Hz source?

参考答案:    
标记此题
110#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the capacitive reactance otk 6*+;u t3p:hiq udfo i.0 witp71- r2rgvxdef 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 capacitive reio w,jr+*g (( grwaq lj4h5u7vactance 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 r)/tl.(, mxiurw-ygm0 yl ydk-eactance 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 capacitie-k6x hcmgot9.:h1vxl 3, tj uve reactance of a 0.010-mF capacitor be 100 W ttk.ucxv-h9h3,1:glxoe m j 6?

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 0.00jolybd 2d 47q dbdbc 4:)z)gf/10-mF capacitor at 1000 Hz and 5.0 V?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
115#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the impedance of an ac s/q7,dj9vlg ;ibiqgjsw 6;i+reries circuit with 12.0 W resistance, 15.0 W inductive reactance, and g9;s+brv,6/gwi;jqq dj l i7i10.0 W capacitive reactance?

参考答案:    
标记此题
116#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total impedance at 1500 Hz if a 100-W resistor, 20-mH c g5c*6gva6ckz oil, and 1.0-mF capacitor5c vcgzk g66a* are connected 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 if0bwh z8kh d)b7 a 100-W resistor, 20-mH coil, and 1.0-mF capacitor w)7 hd0kbb 8hzare connected 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 nr2tfb 2f4 ,h kqxmw+5 8sww,pconnected in series with a 20-mH inductor, what is the impedance at xptbf 2hw+w, n4 k25q wf,mr8s1000 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, wh a:tnv7hks q:th a 3-c6pa-g5mcv)(k yat is the phase angle at 53at)chackv( ts:-g7k pm a-v:y6nqh 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*op 6b4-z;jkv p*jqja series circuit with a 20-mH coil and 1.0-mF capacitorap6zvb4k**qjjpjo - ; 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 seriesqjjnz(+5i1gb/:z9 j ewule1mu:sq -z with a 100-W resistor and 15-mH coil to get a total impedance of 110 lj-e9s +u ug ejqb zn5 z(zw1qji:1/:mW 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 inductky 8sm,9m0jsv; rvct( or at 5000 Hz for a totaktm;y90cr8m v s(,sj vl impedance 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 segiqd-(y k l :7.c0asiaries with a 100-kW resistor at 1.0-MHz for a total imped 7kdi- 0(gqsi a:cyal.ance 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 s-jp3b4u wsqzk(u8a 1 6tt(sc capacitor. What is the impedance at 1000 Hza sssttz 86 u((c 3kqwbpju-14?

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 i2s jr/qf- .y afzu:e9kn series with a 10-mF capacitor at 1.0 kHz for a total imped sj/-q .zkfya2uf: re9ance 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 se08la2v z)/zhpyij0i fid o- 7yries with a 10-mF capacitor at 1.0 kHz for a phase a-z zfv ilyp8 y j07hi2a/)io0dngle of $40^{\circ}$?

参考答案:    
标记此题
127#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series with a 30-W resistor at 1.0ewmzr2 cq4 m.c30;1n oxv5snv kHz for a total impedance e 3vq2xc 54 .sr0;mvnocwz1m nof 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. What is noul.;/c3p7 lqukjv 3the phase anllkup;3 j3qnv 7 /uo.cgle?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
129#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows at 5.0 V 0fejpt;zp (.4s i i0pfand 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connected i0. 0(4p zippft;j efsin 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 resih g5ndw x.b/y-stor, a 10.0-mF capacitor, and a 0.3dwhny .5/ xg-b50-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What is the rms current in the circuit?

参考答案:    
标记此题
131#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistance of 55 W, a capacitor of capacitive reactance 30 W,g +ml3 8 pzonp3z,cpu; aagu): and an inductor of inductive re3;z n+z8gm u,a gp)poa3p:lu cactance 30 W are connected in series to a 110-V, 60-Hz power source. What current flows in this circuit?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a serkh czz4d)p )ur(cd r1sf3uij5*w (*ws ies RLC circuit containing a 50-W resistor, a 10-mF capacitor, and jwzpd sc 4uu)fr) 3i(c 5d*w*(rzs1hka 0.45-H inductor, when connected to a 60-Hz power supply?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 phz i/:pwsuqs+c+0)+nt ppf3z base angle opt/ )qw+0:sn bcz+fp+3zi u spf $40^{\circ}$ 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 = 10.0hmpie ,n;+o8num8e(:qo3jdi mF. At what frequency should the circuit be driven in order to have maximum powe(m3 ieo+e;idpq u8:8nh n ojm,r transferred from the driving source?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
135#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power output in an ac series circuit with 12.0 -j)v zf9st4h cW resistance, 15.0 W inductive reactance, and 10.0 W capacitzt-9c 4jvh)sf ive 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 circuiu)mw)y/- : pgv 0ggvmxt is $63^{\circ}$. What is the power factor?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 .g 7 7y3jfx8tgijww c+-iz ji/a resistance of 30 W. What is the power fz wgc+fxjtj3i8 i .y7ij/- 7gwactor?

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 cicgg3 1cdko1t;rcuit containing a 50-W resistor, a 10-mF capacitor, and 3 c1tcgg1 kod;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 1.0-mF capacitor and a 15-mH co/bq1gat;*9x + rg*1b odggpgpil in series?1ggg g rpt1pq*+o9xa;g b*d/b

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 resonank+ntn 6x6 vfch. schvq..ib.3t frequ63ixs fc+ t.k.b6 hcnvqn .v.hency of 10 kHz?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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-usee+(jt, yc1 pnnt43; 8hpnqmH inductor for a resonant frequency of 100n ye38hp(n4, tunct1esq+p;j 0 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 resistor and a 40)jrldfd t2eu ;yudc6 h9mn5 9;-mH coil if the resonant frequency of 9h;5euducml92ntf) j6 dy;rd the circuit is to be 1000 Hz?

参考答案:    
  • 姓名:游客(未登录)
    •
    总分:142分 及格:85.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 142 道题
    本平台(https://tiku.one/)支持练习，作业与考试(自动评分)三种模式，群组成绩统计排序导出，题目动态变量实现同卷千人千题。
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

    试卷内容到此结束!   © 2025 题库网 (https://tiku.one)版权所有

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

    GMT+8, 2025-9-20 16:02 , Processed in 0.816392 second(s), 305 queries , Redis On.