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习题练习：Physics Unit17: Electric Potential
本习题练习来源于51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 75 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://51fly.win/test75.html
 作者: physics  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 匿名未登录  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 is not a vleh.s0yd8d/ te8sz hm66x i1rector?

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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 ik9 /b j-7 sap+7:woxq7 k/nzlfilzia+s 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 obn llf0)fk ,d9k ;d4k+ rgztwc4jects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a hig t+ z,40d d)ckkk4gf;wn f9rllher 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 direction of the ele0-xgzw bi/,c+mq 5m suctric 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 sd tl1f lf2c8hhnk6pp*9xh7n zn t;99in a direction opposite to 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 placed on a hollok ohkjsa /,1 xn-y,nk2w 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 acthaybv+rchp; +6(me ;p- pq) svz(dyt)8 4eiycelerated from rest to a speed v by a 500 V potential difference. Ifym;(zvhp6diprytyq s +;8 veh() a+bpe4 )ct- 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 r z-g euu5r8rc.eferred 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 equipotentxshum nibe)* s-dd 790f3ci*vial surfaced )9s7m hn-dxiv0fb i*e *3scu.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface musm,hq ,b.;j plyt 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 pk7j a9plc3q*pkb;b dl4j5ft3article carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt* dq7fjlcpb lj3b4ktpk9 a;3 5 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 .2vx -o bel5.bo7iyfx0 r1ocnof

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt corree,n6q 75qd isesponds to

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14#
 
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 po lth* + 8xjbwk2uj;b8ositive point charge is 100 V. What is the absolute potential 4.0 uxb2b+j8 lj*kt8hw; om 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 potentiqjtzdm4 o) f 7x*1j7teal at a distance of 2.0 m from a negative point charge is -100 V. What is the absolu)et4z7dq x *jj1mot f7te potential 4.0 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 exact center of a square is 3.0 V when a chamm:jd9 r7nf4e9 +tmka rge of +Q n99 +ftme7amkrmdj4 : is located at one of 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 squarez b m4jer;z1w3 is 3.0 V when a charge of +Q is located ate 4;mjz31wrb z one of the square's corners. What is the absolute 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 chargb49. ru0iev4r wsou:yes 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 iusk9w)(nz u s/u9a b4iokd 8n8s 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 capacitors are identical in every respect except that ss:x*ahom:j+i .n2 poone has twice the plate area of the o :2mn*p :sjoahsxi.+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. If the area of thl0q51 m9a)wv-xb 4k* asyzzyeha.3 e pe plates is doubled and bkey z qv.91yxalzw43*se0 amh5) -pathe 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 capacitor fully and tsha.r,/sd)w4 sf3j ouhen is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plsu,jd f 4s3)aw.s/ orhates 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 th1v+ nfy0-i7 hn*e p6gbnf+vtqe plates of a given capacitor is weakened, the capacitance nn+qe6v tf17gnp*hfb+i v -y0 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 parallgclyd /+upw0 )el-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amou+g/yp0d cl )uwnt 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 capacitu 0;0hq03wf p0 xdxnp+xg nk7mor are maintained with constant voltage by a battery q 0mxf0dxg 0 xpu0wn+73pkh; nas they are pulled 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 a2bnci 5wxii5f9z (/gx2z5emyr 5eu+ydding a dielectric material between the plates of a capacitor.g rf nu2/5x+yxz czyi 9m (bi52iwe5e5
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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 betw 8tyuu xjxh ))d4:wvsr/i ,wph00pa4ceen the plates of a capacitor. What wu4) a 8sj: ,udpv wic0p4xtx /hh0r)yhappens 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 pdqbvxpux 6 x2ku0 zb*i8)/ul0laced between the plates of a capacitor holding a fixed c0kb)lu/* v dpq0xz8 x 26uibxuharge. 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 ab mk,3pu-vq c8nd becomes fully charged. The capacitor is then disconnected, and the separation between the plates3b muk ,8vqc-p 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 capacitance of a capacitor holding a constantnvwq3xu 1 t-zcf8wgt:z (:xe5 charge causes the energy stored in that capacg :utt 8nwe(:c3xzv1 5fw-qzxitor 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 stored in that 3p2kj r o. -pym+8krcccapacippcc3k 2. o- j+ryk8rmtor 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 pigk. v 8:7bpwwoint A to point B. What is the potential difference between points A and w 7piwvg:.b8k 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, wh: 2b8cp7q gstlere the potential is -50 V, to point B, where the clgq2 8b7s:tppotential 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 thro m.h,op9fn3)i8 pcp0of zzcz;ugh an electric potential difference of 500 V. What is the kinetic energy of the cpcmh);i8p ff .zzzo0p,n9 3oproton?

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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 vva8)n/s ia(d o4tm:belectric potential difference of 500 V. What is the():vm /4dsiab 8tvn oa 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 prol1nmrd2g) tkj/lbp hq aj2;;-(i f,lzton falls through a potential difference of 1200 V. Wha2k)d l ma/i 2nf (,jh;bljgp1rzl;q -tt 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 2em repxe8n 8 ;rx8m04qkowz 6V do in 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 acc.fk lf1nf jj g6q5:ls8elerated through a potential difference of 500 V. What is the vel8qlj.skgf1f5 n ljf:6ocity of the electron afterward?

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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 fromxy:qn .- ,pbag rest through a potential difference, and .y, :nx-pa gbqafterward the ball is moving at 2.0 m/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 the z f6j84jq*szjelectrical potential difference between two parallel metal pz q8z4*6s jfjjlates separated by 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 f-go3q z jy5eg(k5qc7 v s86uj/lle jy6ield, with a magnitude of 500 V/m, is directed parallel to the +x axis. If th(6jlkj j lzqce753 -yvgyue58o sg6/ qe potential 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 ( )yetdl :of (krbvu5(toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a poul(vr( )ke f d:tyo5b(int 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 magnizl9s gyd5g.bl 4 c5 .,3 vpwvm;wb :7lmki;acvtude 3.0 V/m. What is the change in kinetic ene4kc.s5l9mv g. il vybpz:;mwg,wab; cl7 35vdrgy 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, are connected to p92zjmygd+(a a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrivesy9jg z2d p+ma( 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/5(o,qfas c-+tvvse; ek b1w f 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 ;bfva+5f s-oqte,k1 / wecs(vkinetic 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, separater 5 fdhcmcuihym6(/ c fw88(p(d 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, what y5 f/(( (ipmcdw8c6h8umhrfc 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/C1 0tv.ftgrrhfpc )sn j53 /ka2 directed toward the east. If the voltage measured relative to ground at a given point in the field ifvnf)cjha5r/r 0 g kt3p.2st1s 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 directed toward the east. If the vow4x7z vr;uxyqzdr0/: ltage measured relative to grdzxx ;w0u4zv r:/q y7round at a given point in the field is 80 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 potengw9ycj8mfb2 k8 /vq 6ztial difference of 12 V, it will acquire a kinetic energy (in the absencmzb8cq/92yk6j fv w8ge of 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 dwm/ b+g*5y0 twlzxo t,(w f2ogistance 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 stick. Find the electrin)kg /bpfhuh )yph7mu n +o89f 4*kqk/cal potential for the center of the meter snm)uy9khh4b/ +p pf*)8uq k f7nog/khtick.

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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) anm .ni5j k* vwno2p32;oef*che d a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero atimnw k3 . vpf*o2cjho; n5e*e2 infinity, what is the electric potential at 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 c)-h4u9nj 6a 2e j*re;4favhq juz1ds nharge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potenti2;enjuhazvj4a- s)nq u 9j4e 1 d6fr*hal energy of a 1.0-nC charge 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 is at (3.0 m, 0). If the ff) e,w7lyzz)dcx +nu d g1k18potential is taken to be zero at infinity,gkwld z8z )fy n)71+1cfeudx, 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 placed at the corners of a rectangl ccn/y .mw;o5d7vg v *jyxep*z0,8zwre of sides a and b. What is the po /zdmy.vn*cpry*w, eow80 x5jcg;v7 ztential 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;d7m13,o /mxcfb(+ q navqx bi diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in the square's7 on1/dfqaq ,+b3;(vx mxcbim 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 +2e,(uaulu(i6qhk8c. rde /t,nnwn,t8 7 n 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 c6kusa0x/-(ppdhgh*2 ue6geplace three charges, each of 2.0 mC, at the corners of 6 hcu62 kpheu p(ga/*-g0edxsan equilateral 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 .7yio)c pjs (jbq,;evit is charged to 100 jv),y.cjp(q;s bi7o eV?

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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 plates of areta;/a. shdur-a $0.50 \; m^{2}$ 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 pl;t0m; b:c:i r.cc ;g czrmu)ubates are separated by 0:)zbr c0cucc;: itmrgm.; bu ;.050 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 capaci(i5l atsl- a oa-yh5;y-,elurtor has plates 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 h oit7+lu,tix*fslh*5k ct)b 1ry ys7/as a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plxcst/ki1+*to7yul s r )5h7b,iy *ftlates?

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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 connected across a 100-V battery. After the ,fvu:ae2s)f lbattery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remained connected f luseafv):, 2during 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 15l iijszgg.2;b 4p),uhj;p0.qrtm o2y mF capacitor. How much energy is stored in the capacito2;lbi),q4r.opy0 thui.2;pm sg gz jjr?

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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 capacito.(j+pd9tqr wfcnr.r/,e:i/qn 6s ytr r. What is the energy stored in the capacitortq:inj(s9 6t.,nrrcfwpd. r y//e q+r?

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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 th i3l9ylby6 a.uh1d:qa e plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in charging 9 3bqid6y.a:ay1lh lu 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 storesw q48nt p- o9aq,xxd/6(dls:ev gqxk4 $2.0 \times 10^{-3} \; J$ 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 plates +otb8k39dmg :/h*guod0 xkq1ot j e* lof 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 capacitor co-wm0 i hw c6wp69uio0tnsists 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 capac tr 3 31(wnhyrxhdeyz/yp/i*1itor 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 capacitor is f ku.+en xw/ip+:qag3 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 i mi ke: c-tu6h)vsq:e4s constructed with 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 becomes fully charged. T w2kvw /22esxdv:k 1grheg21v2wxse:wkr / 2d kv 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 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 50-V battery and becom5s 7-u:apd iw6 9z hn;n .dgxqgghk(;ses fully charged. The battery is removed and a slab w6 p;z s;xdasgnh59in. k :ggud(-q7hof 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 the slab is inserted?

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