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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.5edu.win/)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 75，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://autoconfig.5edu.win/test75.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  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月15日 14:49  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following 1k q7y 4kj2chais not a vector?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulomb i8joa3l 53 ygrns a

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two identical aluminum objects are insulated from their surroundi p5f*g0o urxkr6mx4:1jwa*q engs. Object A has a net charge of excess electroxxueajr4 k0:r1*5gmoq 6wfp *ns. Object B is grounded. Which object is at a higher potential?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a proton moving in thd3qsp p+ vxikf 9;fcmw,wu1,- e direction of the electric field

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For an electron moving in a direction opposite tol6)bqvi+ ;qmq the electric field

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Several electrons are placedj9/*-ws q7peltd ru 53xjq 3lq on a hollow conducting sphere. They

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A small charged ball is accelerated from vjcuxw5* g k1foyw/+ v;p+ k.rrest to a speed v by a 500 V potential difference. If the potential difference is changed to 2v /5 kcu;ofw1*+y .p+rwkvgx j000 V, what will the new speed of the ball be?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A surface on which all points are at th lbje7mv((y3ae same potential is referred to as

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A negative charge is moved from point A to point B along an eqfld7 i4 t1sg v/yslj*3uipotential surfaci j37s*f 4dv1/lg sylte.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface clh-x-1qzy6(2kc vi mmust be

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The energy acquired 2tq mf f6gqi- +ai8bo-by a particle carrying a charge equal to that on the electron as a result of moving througt2b8f -m+qi qo-i 6fgah a potential difference of one volt is referred to as

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The electron-volt is a9 b : r/nih,pqft f+9f6)awktd unit of

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspone hl,80u qj+ 2iwofklb r/obnq-/ j)e-ds to

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potentia me(zthwi7iil3la 01 -l at a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potentema(i li 01l3 thw7-ziial 4.0 m away from the same point charge?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential at a distance of 2.0 m from a negative pointax-f3g)ew6 qcn+ndub2j3 *wa charge is -100 V. What is the absolute potential 4.0 m away from the scbnj6aw eqa-2 g xn3w )fd+3*uame point charge?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential at the uxszp:d(1odn,2 d tw )exact center of a square is 3.0 V when a charge of +Q is located at one of the square's corn(t, d1wpo2dn xud ):szers. What is the absolute potential at the square's center when each of the other corners is also filled with a charge of +Q?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential at the center of a square e w9fo5 y31t fz.sk3 ;lc lpms5l-lj3jis 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolutesc31 ;5jl fy9.p- ewt klm lz5sfjo3l3 potential at the square's center when a second
charge of -Q is placed at one of the remaining corners?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electric dipoles always consist of two chayk 6bi9n.(v *gfpt. r)yn o6esrges that are

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One coulomb per volt iv :p- s+7zhi,ikv+gdv s a

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capacitorwzi0:2 hmta5g s are identical in every respect except that one has t zgwah im5:t20wice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capacitance

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitococ u1v fwvt7s(i4/(m r has a capacitance of C. If the area of the plates is doubled and the distance between the plates is (fv(i/v 1m wto4c7csuhalved, what is the new capacitance?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A battery charges a parallel-plate capacitor fully and then is removed. The plaex4 p , mkcrz0x7kv:l04v3tmgxy p;6htes are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the p43m4v6 cm ke k0:xthg;xr,vxp0 z7lypotential difference between the plates as they are being separated?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric field between the plates ofdwtg).6vjw)x; /:tut qoqj1 i a given capacitor is weakened, the capacitance of that capacit ))6xjjq1ti wv;dqu./ gottw :or

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The plates of a parallel-plate dq3.*0mg j2:k h rsrkkcapacitor are maintained with constant voltage by a battery as they hkg3 *2kqs:rjd 0.m rkare pulled apart. During this process, the amount of charge on the plates must

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The plates of a parallel-plate capacitor hhgfjp9 ee. )b,8 x g+fglj*0vare maintained with constant voltage by a battery as they are pullejv el9b h p8fg*h.)e, gf0+gxjd apart. What happens to the strength of the electric field during this process?

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26#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State three reasons for adding a dielectric materic ont: u+ dmb;t 8e/4q,mut5ejal between the plates of a capacitonm;c5j eu8 te/m+t ,4qotbud:r.
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material such as paper is placed between the plates of awtc:9 0+vir vs capacitor. What happentc+svriv: 0 w9s to the capacitance?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material such as paper is m 64f;n w3gn4y+ x3 nbtnbdw9i-us s7splaced between the plates of a capacitor holding a fixed charge. What happensu-w6+ 7nnsdmsswbg44 9x ;t 3fyb3 nin to the electric field between the plates?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor is con7zhio3 ta +r hr.;cqz0nected to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way thath3zoqch0ar7.i ;zrt + no charge leaks off. The energy stored in this capacitor has

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the capacitance of a capac:x7vycy6xlx6se )t1;rxq vmy1 kf )u(;9o oan itor holding a constant charge causes the energy stored in that capa x)f)e;rv96oqut;6vn(xoxk1ma1 7:y xy clyscitor to

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the voltage acrossbf;jllzi6y6u8s m e/; (7wb t7dhzd0v a given capacitor causes the energy stored in that capacizlm7vd uh;fb7z8(/6ltb sjwyedi ;06 tor to

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  It takes 50 J of energy to move 10 C of charge from point A8 (u0 x,tlyb+uioh+p n to point B. What is the potential difference between points A anonh (xl,8putiy0+ +u bd B?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The net work done in moving an electron from point A, where the pote0fosfui rkkh 743,z8 xntial is -50 V, to point B, where the 7zk0fxkfui 4, oh8s3 rpotential is +50 V, is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A proton, initially at rest, is accelerated through nr9*ky 9 zqm 0dk+,cki59zouban electric potential difference of 500 Vi u9nobm9,0zkqkd+* 9ck5z ry . What is the kinetic energy of the proton?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A proton, initially at rest, is a m6p 5h*n6;6mkligdli 1ois**p3ewt iccelerated through an electric potential difference of mt5 kswi*l;n pm3 ildp6gi * 1eohi66*500 V. What is the speed of the proton?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Starting from rest, a proton falls t zs0sj88tls ja .c;im*hrough a potential difference of 1200 V. What speed does itz8s cm* saj;li8stj 0. acquire?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much work does 9.0 V do t t6ui+tq(qx0in moving $8.5 \times 10^{18} \; electrons$?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stationary electron is accelerated through a pote*7b0cgc2mx e19xyop o kbu7.mntial difference of 500 V. What is the velocity of the electron afterwa*7.gb2 c1m9ocemu0 pkyobxx 7rd?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-g object carries a charge of 20 mC. The object is accelerated from r yk9oon+v8x1 vn1mg7qest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potential difference?9x+7vnv8oyo1gk nqm 1

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0-V battery maintains the electrical potentia qwm9jtess5ty9mymq.(6 w 8p6l difference between two parallel metal plates separated qwtpyme s9 mmsw5.6qj y9 t(86by 1.0 mm. What is the electric field between the plates?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A uniform electric field, with a magnitude of 500 V/m, islrf-xica ,p, ( directed parallel to the +x axis. If the pote-l,(pc fir,xa ntial at x = 5.0 m is 2500 V, what is the potential at x = 2.0 m?

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform electric field of 50 N/C directed towx cvy p.h,36+o7r3tde s(olfjm:o.kr ard the east. If the voltage measured relative to grouo(h +pyo.r37mrc otd6k lx3: .efvjs,nd at a given point is 80 V, what is the voltage at a point 1.0 m directly west of that point?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A proton moves 0.10 m along the direction of an electric field of ms nr.vk(z2 mx.y1,(fs r5fmviagnitude 3.0 V/m. What is the change in kinetic eyzifr k. v.125 ns mfrs(m,xv(nergy of the proton?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, separated by 0.20 m, ar;oq q;vh9 ;z2b (lhwvwe connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 1.50 mqv;hv; lzwb(w9q 2oh; from the positive plate, what is the potential difference between the initial and final points?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, sepa)egni6qx3qlmr :4a e.8:jtearated by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 0.050 m from the positive plate, how much qe.q:3 ee4g i6:)ml8arxnta jkinetic energy does the electron gain?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, separated by 0.20 m, are connected to a ywe1k rex59 caj,,(ot12-V battery. An electron,t,1c yr aj9(oe5e wkx released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 0.050 m from the positive plate, what is the speed of the electron?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform electric field of 50 N/C directed toward the 53ih pi)pd q+3+cb vkreast. If the voltage measured relative to ground at a given pb 3kr+3d+5h p ip)ivqcoint in the field is 80 V, what is the voltage at a point 1.0 m directly east of the point?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform electric field of 50 N/C digqm,aj py 8d;2rected toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage at a point 1.0 m directly syg;j8ap,d2q m outh of that point?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a Cu2+ ion drops through a potential difference of 12 V, it will acquire5 r-bd ic(z9xk a kinetic energy (in the absence of fricxi9 c- (kzrbd5tion) of

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potentiaql -5.lkihzwy w */2rpl at a distance of $5.0 \times 10^{-10} \; m$ from a nucleus of charge +50e?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 3.00-mC charges are at the ends of a meter* tylx/c/:schh7g, j i stick. Find the electrical potential for thel:cxyij ht/scg/* ,7h center of the meter stick.

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-nC charge is at (0, 0) and a -2.0-nC charge is3gh;f azplbl- s+,jh) at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential at point (0 ,jzpas l+f;) -bg3hhl, 4.0 m)?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-nC charge is at (0, 0) and 7mha +hd8xh o( o1kph(a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charhoa (d1pkh+ 7h( hmxo8ge at point (0, 4.0 m)?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-nC charge is at (0, 0) and a -2.0-nC charge i o))tsl2)x5emjh zf3cs at (3.0 m, 0). If the potential is taken to be zero at infi lezhx5 sj2)ot)c )f3mnity, what is the work required to bring a 1.0-nC charge from infinity to point (0, 4.0 m)?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four charges of equal ;1y0 dk;mb /usfm4zrdcharge +q are placed at the corners of a rectangle of sides a and b. What is the potentiz4 ;frb;d/s mydukm10al at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, and b = 4.0 cm?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A square is 1.0 m on a side. Charges of +4.0 mC are placed in two diagonally dy bu4h3m5+ dyopposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 5dd b3myh4+ yumC. What is the absolute potential in the square's center?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An alpha particle (chaa c(d e g+,6p9+eps9v;y6 irtfihca2lrge +2e, mass $6.64 \times 10^{-27} \; kg$) moves head-on at a fixed gold nucleus (charge +79e). If the distance of closest approach is $2.0 \times 10^{-10} \; m$, what was the initial speed of the alpha particle?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy is necessary to place three charges, each of 2.0 mC, at the hizuwt721de ( corners of an equila(z 7h w2deui1tteral triangle of side 2.0 cm?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What charge appears on the plates of a 2.0-mF capacitor when it is charge 7; wv1c. ilnc +ye77,ljvbgncd to 100 V,;7+gwvnllb7yic1.j v 7c nce?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor has plvd,k8e;5 + td y2+4tsbwxpyc:do kv5mates of area $0.50 \; m^{2}$ separated by a distance of 2.0 mm. What is this capacitor's capacitance?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor is fille w;t zka3br1xtw 8d7)sntb/6bd with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate area7n;trw tbzt/x6ak8s )b3wdb 1?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor has plat m zfdejqno--0 q0wz;edm-q/0fw4.imes of area $0.20 \; m^{2}$ separated by a distance of 1.0 mm. What is the strength of the electric field between these plates when this capacitor is connected to a 6.0-V battery?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capa wjf7: ;cewyj0citor has a plate separation of 5.0 cm. If the potential difference betej0 c;w7y f:wjween the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plates?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0-mF air capacitor is cdqgrv 6-psaqmm*2 c-.onnected across a 100-V battery. After the battery fully charges the capacitor, the 6cgm*spaq2--v.r dqm capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remained connected during the process?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A charge of 60 mC is placed on a 15 mF capacitor. How much energy is stz 6a hmyq:4l q1ajnc1p6d4a,sored in the capacitoa sdpqh461 6c ala:1nz,jqmy4r?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  20 V is placed across3mw,x)wrx c9e a 15 mF capacitor. What is the energy stored in the capacimwe93w rx) ,xctor?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A charge of 2.00 mC flows onto the plates of a capacitor when it is connexfhcz; 8u;x ;wcted to a 12.0-V bhc xxf;8u; wz;attery. How much work was done in charging this capacitor?

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 10-mF capacitor is charged so that it store2dpaz(fy3l-q- + 1c;/m1muqwlaq lz j*xf/g fs $2.0 \times 10^{-3} \; J$ of energy, what is the voltage across it?

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capag ;)1jft9t8whyx+ qrkcitor consists of plates of area $1.5 \times 10^{-4} \; m^{2}$ and separated by 1.0 mm. The capacitor is connected to a 12-V battery. What is the capacitance?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capaciboow3,qc:v fbx. w./m mhp o29tor consists of plates of area $1.5 \times 10^{-4} \; m^{2}$ and separated by 1.0 mm. The capacitor is connected to a 12-V battery. What is the charge on the plates?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capaci wzv izd-n1r(lmdy +4(9mx7yator consists of plates of area $1.5 \times 10^{-4} \; m^{2}$ and separated by 1.0 mm. The capacitor is connected to a 12-V battery. What is the electric field between the plates?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capaymq(uevi1x31 citor is constructed with plate area of $0.40 \; m^{2}$ and a plate separation of 0.10 mm. How much charge is stored on it when it is charged to a potential difference of 12 V?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor is constructed ewns( e m, tui+xc738n3ko)w wwith plate area of $0.40 \; m^{2}$ and a plate separation of 0.10 mm. How much energy is stored when it is charged to a potential difference of 12 V?

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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15-mF capacitor is connected to a 50-V battery and beco.ql8jd6 1 kp7m2 xkqjhmes fully charged. The battery is removed and a slab of dielectric that completely fills the space betw k7j 16j8.xpqm qhdlk2een the plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the capacitance of the capacitor after the slab is inserted?

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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15-mF capacitor is connecteo/:xvs)le. j hl6 neev3e5 + ck1a,lu rq+mq1od to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the voltage across the capacitor's plates after j6qo: . e3lhk)m asv, x15e++qr l/oeluc1venthe slab is inserted?

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