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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于51fly国际课程 (https://51fly.win)， 为试卷打印版，您也可以在网站平台(https://51fly.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://51fly.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: physics  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 followikq *bzo3 0nyin -huq 62cepgo-3nb g3+ng is 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 is a .io-ua n en.a8h/0yimoo k2yp+zw1r,sj -f 1a

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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 gx4b 2rz) .jgdx uz1u0are insulated from their surroundings. Object A has a net char bg4xd u ju0)gz.2zrx1ge of excess electrons. 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 the directx7y5 ej-y-zfh ion 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 to thz;p 09. v1u 7bvl tmeyv38fscye 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 plszosk ve6d 3/mu.du06 aced 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 acceleratch2.daea7d;d.70lh 0uc bv po ed from rest to a speed v by a 500 V potential difference. oh aec7ldvdp;c.d0u b.a 027h If the potential difference is changed to 2000 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 the same potential is referr znjthp3fcf o 7i4,a vbt;5c71ed 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 equipohmy/l,h ilp6,uc ) o*com6 k2ktential surfaclo6hy/,2 ok mi6u*h, kmlc)p ce.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface musr:ethlc91i 7ayudm3kvw+n1b:: h8 i d t 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 by a particle carrying a charge fo1)7u x9 wtsy k z8kdfe8k; g-v)etg6equal to that on the electron as a result of moving thr8zev -g7fkek;t)dtx9 wko f81)gus6yough 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 a unit of2+zi3*-lphi f gt6 lrtvjxy3;

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt co a ey*ionl,m9.rresponds to

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potentiat, 19adlvi, jpl at a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the same point charge?tvl9,p,jda i1

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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 wlmxa3z gz.rjaic62,j)wyf79 - * ofj point charge is -100 V. What is the absolute potential 4.a7zx-w)z fjc2 6oi jwmfl,9g a*ry j.30 m away from the same 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 exactp(5-ns w1;p :avfwum.qjsh,v center of a square is 3.0 V when a charge of +Q is located at one ofww: j5sqv 1.pmsufpa-v(, nh; the square's corners. 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 is 3.0 V whe;pbmj1n:qr h z tzw4d;:q0y 3ylx91 5fhhvti:n a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's chz0p;jd4:n:3ry v;tmh h1t9qy1q wf l5ib x:zenter 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.j5ec b: oraw0ipk :d2 of two charges 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 is aj y qx*j2mc* ia1inc369pyvz6

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capacitors are identical in every respect except thatub+ dpaz /57s8;uhk bqa0w9fwp: m iq0 one has twice thswbdah+0ik:9/ w p07 fpq;8uqbz m a5ue 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 capacitor has a capacitance of C. g op8j/vc+h )fIf the area of the plates is doubled achvo )pj/8f+g nd the distance between the plates is halved, 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 capacito rp0.wgr*zol) r fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of cha) r0w*pg .lrzorge on the plates remains constant.) What happens to the potential 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 throy4ia, y.6hxe plates of a given capacitor is weakened, the c46x., yhr iyoaapacitance of that capacitor

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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 capacitor are mainta9g f5ej4nlc0+k7v uwgrf 1)ra ined with constant voltage by a battery as they are kg7g0c4 59urv) ffw1nj lrae+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 are maintained with constant v2x)m d ucsr7w7/yqci9oltage by a battery as they are pulled apart. What happens to the stren2mrxw9 cy7 7sdi/qu)cgth 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 adqn 00/itkag -h0 ofj-cding a dielectric material between the plates of a capacitorg f0ntj k0-h0oa-ci/q.
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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 isz;g1 .8p:dq+u hhzy m,5wmjk e placed between the plates of a capacitor. What happens to themqy1pduwh; m5,: zhjg. kze +8 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 placed between the plates of-vq2k yzks4n7n fhq*4 a capacitor holding a fixey4k n* 4nv-h2k7qzfqsd charge. What happens 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 connected to a battery and becomes fuls:u -sn6jtiw.)ot)wply charged. The capacitor is then disconnected, an)tns jow:ws)i6-utp .d the separation between the plates is increased in such a way that 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 capacit(h3m b-knq nuf,11g1r* sp cm/ogu(i gxue.+ wance of a capacitor holding a constant charge causes the energy store+rgi n/(.huux g1b ,1nm (u goq-s*pk3mcf 1wed in that capacitor 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 across a given capacitor causes the energy storwgn1 - dpzl:sm1l 4uccqt:g5v- .i0ve ed in that capnew: 1s.:1-pl iclz0gvd cq4gtm5u- vacitor 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 1-f phh:xvb/i 80 C of charge from point A to point B. What isi8fv hxhb/-p : the potential difference between points A and 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,p 9xe8;m xgg*g;o jfcc3t,p-x where the potential is -50 V, tom tgx;e3 ;-x,gc98pc p jfogx* point B, where the potential 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 res i1: *en+-xbh9q9flwqo *o 7ksbtp,go5r 6 xdwt, is accelerated through an electric potential difference of 5 hwwl* p*:1xf,dtk 9-o56nobsiqg9+eqbx 7or00 V. 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 accelerated through an electric4 w ( kbfx.h-h/p(kgn;3sospfxfnq /. potential difference of 500 gps;/qbn4s/ .(fpon .(f3h kw -k hfxxV. 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 through a pbu-p;x ztdz5ek: xi-5otential difference of 1200 V. Wha d zx-5iue;zxt :-5bkpt speed does it 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 i5( e.)iobhw (ytmu4f nn 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 potential diffp/gy;v4hun9 z ka4nr:erence of 500 V. What is the velocity of the electron afterward/prnvy 9:4 nauh ;zk4g?

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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 8(p8 9.pwpc 6 jukwqcv2g0b2eiow4pp is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m.pp( cko8we698bi gv42cp20 w qupjwp/s. What is the magnitude of the potential difference?

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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 thrl r;fjb ) u+r/* t7qyd9(ibdje electrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric field betw7rqidf9b*u j/(y +j rlrb )dt;een 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 ma4 bomh1-emnh9t;hsmy f5h9f 4gnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500944 y fenh- 9hfm5b 1ho;smmth 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 toward the ea) pge1lmvwzk 4z/4f+m st. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m dir4)k m/mz f1gwl+4pe zvectly 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 4,:f d-n*xh 7wbx h(m+ljx yzqof magnitude 3.0 V/m. What is the change in kinetic energy of tqzxn4b m:-lh j yw7h* fxx,d+(he 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, aregz4 tdrw0a6,c connected to a 12-V battery. An elagc0r6t4zw, d ectron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 1.50 m 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, separated by 0.20 m, are connected to az: rz t,9uccg7u (/o1yg8z-)u cxcuyp 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distax-:/gyz7zcuu()1co9yp8 t ,gcu r u cznce 0.050 m from the positive plate, how much kinetic 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 byugojd-1*u) mq 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, wha m)1qoj*gu-du t 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 easybps*kh/v jmv14e - jx 2i-2yst. If the voltage measured relative to ground at a given point in the fielie yp- x2m1b-jjvv2h* ssky4/d 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 jwm 8usje73vasu 6 /i;of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field is 80vju;7 esai8 3u/j6wsm V, what is the voltage at a point 1.0 m directly south 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 acquire 4 )(h8kc)+vlb moheca a kinetic energy (in the absence o o+v)bhea4c8kmc)l (h f friction) 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 potential at a distance o k5c9or ;s-mkkf $5.0 \times 10^{-10} \; m$ 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 a2u vmex/ ja; ;5-p9(y/npzpxcg:9z 9qmm xnx k meter stick. Find the electrical potential for the center of the meter stmznx/ug5p :q x 9c je(p; ;xak29 9zm/m-vxypnick.

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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)prb0ai2 fle -9 and 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 ai ap-bl0f2 e9rt point (0, 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 a -2.0-nC charge is at (3.0 m7p-mmj4 o 2t4ih- v av9hy-vmf, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0t-op-m m 94jiay4v7hvvm2h- f, 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, z9 pa3-a .z2q+uu0o/* wwugepmmtbc-0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken uqa*be p9+ /muuoa 2z0w tczp3mg.w--to be zero at infinity, 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 charge +q are ,ucrk4d, ,bu qc9g .kufw (wd9placed at the corners of a rectangle of sidesdr (wquu dc.4,fg u,wk9,kcb9 a and b. What is the potential 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.rhwxj. ah puk4k-3 ymyi-. c:. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed chargesxkc:-hhym k-p3jir.a.4 w u. y of +3.0 mC and -3.0 mC. 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 (charge n n5+8wgxyetpcxq)vtskd 6 tp b6, 0pdv9w/4.+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 toz2 vqn- h6n,fo place three charges, each of 2.0 mC, at the corners of an equilater, -fhnzv2nqo 6al 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 2.0xgwr(zb -xt);s* nocy5:au8c *,un hg-mF capacitor when it is charged to 100 ngu zwtaur5x)xo **h:b 8-c,(g;c sy nV?

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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 / pygc-djj/m* :+bupz3 ( hsxqhas plates 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 filled with air, and the plates are sepdn /r9 wha11ff+u.u bv:jmv5earated by 0.0505 1h:n 19 amwvr u/bfe.vf+dju mm. If the capacitance is 17.3 pF, what is the plate area?

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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 platesm :ww:;6o/(i xbssscs 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 capacitor has a plate separation of 5.0 cymj -9rqybz /,m. If the potential difference between the plates is 2000 V, with q/ym ,jb-yr9z 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 conne slzo,6nbq:5 rcted across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remaiq6 5n, brs:zolned 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 m8 fs tvgkjh t-k)+ t.72wvx;utr +nz3kuch energy is stored in the c7.2; tkux+)n+kzgjwvkhs 8tf- ttvr3apacitor?

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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 across a 15 mF ca(tly 6 + f2dt2x(k )tg;csrypepacitor. What is the energy stored in the capac(dt2f+l 2t)s6yt;x kp erc(gyitor?

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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 fl4 l:yeb4dpyrm/q)g0 :ijz bk -ows onto the plates of a capacitor when it is connected to a 12.0-V battery. How much work was donl4k/r jp0qbyz i -ey)b:d4g:me 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 -v0 3-1 ypiov(8tcrno xv +pr+e7kr6pgoa/onthat it stores $2.0 \times 10^{-3} \; J$ 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 capacitor consists of pls g-k4 9n;jhgtates 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 capacitor2jygq)sw/h )b 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 capacitor consists of plate.n,5pea )n w4y 45dfy ueuq.nbs 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 capacitor is constructed with plate area o6 psla1eyv1(kf $0.40 \; m^{2}$ 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 with plate awi0;wiawd+sa fk17 .xrea 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 becomes fully charg-74egjkd -q 6a4edj) j(y vgeued. The battery is removed and a slab of dielectric that completely fills the space between the plaejv )e6y-jdj(q dk 7eg4a-u4 gtes 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 connected to a g 3di/9s0tow x srbbov7*o* k050-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between tk3 0osv79boib/tg 0*o xrwd*she plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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