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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://autoconfig.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://autoconfig.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 following is not a vect8:/ yy2i34my gyxvs rvor?

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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 ilaba 7 n0zr8) 7wpve6 mdr(+:c ftg-ens 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 surroundin)*tj lvs 7z6aakf4e9 ggs. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher potenti7vlet z6 f* sjkaag49)al?

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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 d8078bbyidpy d irection 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 eul* )9kf0qna 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 hollow cov:xxd9q, d47 q,lycmw nducting 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 rest to a speed v by a 500 V pote;v1s+3wx iui7progy .ntial difference.p;wy7+x3 siu rig. o1v 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 atcu +of qzpw;22df5ie5 the 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 jnv f0hft.: d6 iq,ssz;nuu3 ;along an equipotential surfacet;s, fiuh0v.dzsuqf nnj 6;:3.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must vl,; h mk2we7vbe

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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 partico6n;jw;; fb7lc je2 tlm3j9tble carrying a charge equal to that on the electron as a result of moving through a potential difference of one vofotw7 l3c;2 69; jmeb ;bntjjllt 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 a3 s 7clj**d(t/oykioz 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 corresponds h5 .cy;u aa* 9,ruifoxeu 7v:tto

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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 positive poin:s * pewzimp75t charge is 100 V. What is the absolute potential 4.0 m away from the same point charwpm75 i:szpe* ge?

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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 distann q97u+n adx.qce of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the d.nq+uqxa97 nsame 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 ebrfr )nhj03g c(t*jl+xact center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the abso3 njf+tc*gr jl)(0rbhlute 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 when a cix a,:v7)nfoyharge of +Q is located at one of the square's corners. What is the absolute potential at o fiay,:x)v7nthe 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 co: det1f5qqvp5lr fyy (7 eh3uue(5qu-nsist 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 ,wp048f9pwbnmi :d lm-r fls 5is 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 respp vtj9 2-phu)1edw 6gvk i/5wtect except that one has twice the plate area of the oj wud62tv5w/9) hkie gv1p t-pther. 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 capaqq5xk0n6g3v (j 3dbuc zgi)0mcitance of C. If the area of the plates is doubled and the distance between thekgi3(qqx 6u 35nvm0jc)gd z0b 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 ful6r+ j/hj ols60gig-d hos;6ugly and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains consh od u+;og0gijh6s/sj6l-6 grtant.) 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 the plates of a given capave k0gqmjfj38-n s .d7lf;t.mcitor is weakened, the capacitance of that cqns. 780 dft;jj3 lkm-.g evmfapacitor

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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 cpak/ned :7-(pii vw n2apacitor are maintained with constant voltage by a battery as they are pulled apart.np vk(iad n-/ i:w2pe7 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 vol2vcedw y,zu /0tage by a battery as they are pulled apart. What happens to the strength of the electri zu 02y/cd,vwec 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 matermdi 5c2i)f :fvial between the plates of a capacitofmi c 2)i5dv:fr.
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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 :idp11pyrza0 cfereq7 3(r3 xbetween the plates of a capacitor. What happens todyrper xz :ec7r fq1 a3ip(103 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 placed betwe 7rg.cj24edogz9*m oren the plates of a capacitor holdozc2ge49 .rg 7dmjro *ing a fixed 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 batw5odkv.mw f71 tery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. The energy stored in this capacit7. 1wv5wd fmkoor 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 constant charg euzf7bz x276oxere g jc4*9; sq;-seje causes the energy stored in that 77jsfb xx ;* c2oee9 eqer zs64;u-zjgcapacitor 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 a6is ecc*qya4h6(* -xrvt 3dg3dbl8b y given capacitor causes the energy stored in that capy*q*lyd b -gr46a3h6s3edtvb c8 (cxiacitor 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 A to point 29z3 bf .h,edhqn:*jwat*b sg B. What is the potential difference between points A and 3: ha,zg9qw.*2*tbejnb d fshB?

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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 lv i*u a pt-1c.bfbbrw8-0qu.point A, where the potential is -50 V, to point B, where the potential is +50 V, -0c-8iq b1 . .auvuf*bwbpl tris

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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 an electrisu+u4t wm 9h2fc potential difference of 4h2f+mw 9 utsu500 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 cuo4:n:vz xzswa2yrv7i, 25y accelerated through an electric potential difference of 500 V. What is the speed of the prc,:7 v4w5rz aonsxyu v 2:2yizoton?

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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 potential difference of 1200qzm kw-sf. )7o V. What speeksq) fmwo-7.z d 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 in movin8cedsft83t q r ml dia+3nm978g $8.5 \times 10^{18} \; electrons$?

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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 accelerateq *l c:tr2b ,euwgckf;7:)nhqd through a potential difference of 500 V. What is the velocity ofbnt:f kg e , )2*qrc:7qlu;hcw 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 nz:v bo4er/cj4/7oz nl9o k7lis accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potential dojn e9orn4l cz lo7bzk/v4:7/ifference?

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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 maintai l b:vki3m: z(x rkx4(n3eb/qvg9f;knns the electrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric fieg (xxvvklk b3 bkrf :4z/9:n3nqi(m ;eld 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, i4z:wh0g ci ju2s directed parallel to the +x axis. If the potential at xh 2wzju0g4 :ic = 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 Nu;pm9d2fqw f0 /8iuzu /r +4amw;yxth/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of that point/9u4 0wfapu2yu8tf mh ;z qm+ ;/rwdxi?

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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 o2t u.fqq/m 5dpi/krr/ f an electric field of magnitude 3.0 V/m. What is the change in kinetic energy of the proton 2f/ ikp/dqu/.r5mrtq?

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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 a 12-V 1.ma68/r jeptr7j mrrz /pqc5battery. An electron released from rest at a location 0.10 m from the negative plate. When the elect /j /6pr5mr jcmrtpzr 7e8.a1qron 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 connectewij arq-;p*/r we,kg8 d to a 12-V battery. An electron released from rest at a location 8ijpr*eqw-, ka;g/rw0.10 m from the negative plate. When the electron arrives at a distance 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, separaax5v5y t(xc /thu 7b6dr5w5qqted 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 ar5qd5x(wr6t 5yx cht 7b5a/vuqrives 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/ qweu6mmm5jd) *pu 93hC directed toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voluwpmum) 36dm5 eqjh*9tage 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 -u-:3d qffb ww50 N/C directed 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 p fubq:-dw-3wfoint 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 acquirefpnx3wz,g:;k a kinetic ene3zkg :px wn,;frgy (in the absence 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 distac*5h m* lvmz:tnce 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 -bbgt:it8yz- ,)x vee stick. Find the electrical potential for the center of the meter stgvb ,- 8yztbtee)-:xiick.

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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 tat z*/.tssnet)6(cmaxxgj3 *s.6dz (0, 0) 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 poten)c(.nsaatxzdz*j t*6 st3ms .tgx / e6tial 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 charge is at (3.0 m, 0). If t wmsf4fxr8 ea8t5 5rcb5fw)4m he potential is taken to be zero at infinity, what is the electric potentialc 8re8a54 r 45mfbw tx)ws5mff 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 ( g:;vj o7enam-2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work requirg av(o7nj:e;med 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 rectangle of sideh+mscr)k xh f:.ku418de; r sxk6k1jrs a and b.6hrrd+xmkj ks8hck1x . r);14 :fskeu 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 sidnryb6i;u owo)42qx1u t 3m.yh uxo x9fr s*r..e. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolutes6xroqom.b )94rf..ur;ytx i1nyx3w 2 u oh*u 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 (cf u ;4ycsue.c9harge +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, ea(jehuk; +*(x2w z dbcu*hz e+hch of 2.0 mC, at the corne *e d uezkuwh*zb(h(j +;2ch+xrs of an 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 ag84c8nud;fo) jtt kk0 2.0-mF capacitor when it is charged to 100 V?t)ft k8dnugc o8jk;04

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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 ywu4s 7 07ep i cw.,3 oih/mjq )pertrwm0h14pplates 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 filhg2s: 7mpd:gl2js / dvled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF/ 7 gd2jghd:ss2mv:lp , 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 plates of arearf6y *swzw -xuw w**0oihqhw8 - :xjc3 $0.20 \; m^{2}$ 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 cm. If the ss+q .k;ydgym mu.t4 ,potential difference between the plates is 2000 V, with the top plate ,4 ymk+dm sy t;.sgu.qat 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 connected across a 100-V battery. After trh- ) .md:qa5ox-zxd hhe 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 remained connected during the procdhr.-xq )axmzo -hd:5ess?

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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 capaciy ,d. q/qz9mcztor. How much energy is stored in the capaciqzyqcm /d .,9ztor?

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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 c-smp a pm90er :*yl2qyapacitor. What is the energy stored in the capacm0:-qm9yaely rp p2s*itor?

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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 plates1 e t4;-mercst of a capacitor when it is connected to a 12.0-V batte1 cs rte4mte-;ry. 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 is55 ; cqg3nquzsulo8.s charged so that 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 plates twu6a4 2le;ivs40mwgof 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 capace0 /cs(smv2l xjt :x+vr hve5gpy/)a*itor 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 plates ofba 6/v 1+bmqvt e,dpvjk6+ p,wr sr04r 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 capa d,b:p3usil**/h ucdrcitor 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 c vp ;ql64z bv-+jk/wais 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 p.v x2jtv xcr,bmg+,ywt+62cconnected 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 dixr jywc+,2vt +,gbm6v 2.tp xcelectric 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 c +jdgimg9qb6l8y /3 btonnected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric thyb dq38j/b9g6m g+lit at 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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