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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 iqx2zr*394 kxgf5u; rpdvtp)y s 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 6 5: debf;wvrja

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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 insulz/(m deycai2: ated from their surroundings. Object A has a net charge of excess electrons. Object B isaed 2 iz/cm(:y 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 direction of te+xdxt62b(wug p- cvmt :m-*l he 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 dni m.cp.u-+ yzq.mc h5irection 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 conducting sphere. 00dx*)eq q9p3gvdbo l 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 52fr,w9wnwlr b8:e:,3p.zpn) d6kq h ottni g)00 V potential difference. If the potential difference is changed to 2000 V, wha9)g3f t n),.:8hwndzw2rqw pkol epi rbt6,n:t 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 potentewhn* q0;fx iiv 6e-ks0;9wjf ial 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 +.,yxpn+ xcj *ucdtn2k7ga0 sw ipi8* along an equipotential surfacy2xsdign+a8,kxic.p* 7*tnpucj w 0+ e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface muxgz:36 mj; fjbst 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 equal to thatfz2c),bma, hx-p zi 0e on the electron as a result of moving through a potential differencxa -c,iezbfmz) 02ph,e 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 o3(gmn tio 0: v9damj*vf

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspo ns: .6(q0khjl(e9 o-so2 ldhwvrt(ghnds 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 dha-(u5a,c5ubuu4 hfsitive point charge is 100 V. What is thef -ud55u, uaahhu( 4cb absolute potential 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 etche:3b i3j avm43y9e9 cc.edistance of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same point charge?hiyvm ejc9 ee 3tc34b c3a:9.e

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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 so d2-tm*p-mz+eiwp-k;k j,rq quare is 3.0 V when a charge of +Q 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 withd+2m- ;kjm zietw - -*pqrokp, 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 center9 76 ucwn m+upy3pk.lg7yw 6,crfy)br of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute potential atpu3 y + 76ucygc 9mbr.p )6rn,wlkfw7y 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 alwaue6cr,c f(7hw qps/k,ys consist 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 ijbc mk40 (hv 0,k rq2cmi8tw1is 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 thap x*;kd-dux2-;ut9gw e unj1mt one has twice the plate area of the other. If the smaller capacitor has capacitance C, the large -d*-91xkp 2udu ujt exgmn;;wr 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+y154ueko )ob jj m/qu has a capacitance of C. If the area of the plates is doubled andk+ o5/)juouqy4 b1ejm 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 capacitor fully and then is removed sl41yrlu t72qbqw xo8o497ygs i6 2om. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the potentia ibg q9 4rs2 1oy84ll6utx sq277myowol 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 betivqv0o+zsn yf4.7v3l ween the plates of a given capacitor is weakened, the capacitances7+.0 nzvyolvq v43 fi 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 8 bqt;.ax 0xlycapacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge o8x.a xbq0 ;ltyn 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 capaeyb7 z18:,-ulssod 3o* dg mghcitor are maintained with constant voltage by a battery as they are pulled apart. dl*zo 1edb:uoss-mhg387 ,yg 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 dielectricx(w1ii y9 s nq3l nvv8z7:ouq( material between the plates of a capacnqlzqivs 3:( no (8wxiu917vyitor.
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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 (xr 95;-e* esnl i7tgyigz-v7jvm c 1nas paper is placed between the plates of a capacitor. Wh5c;gv(n m*v 7g1 z yjnleserit -i-79xat happens 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 placed betweenmd wr2tw: o2a; the plates of a capacitor holding a fixed charge. What h22ww t m;oadr:appens 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 batterb 23xbquydrpmol0- 7/y 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 energyxdblu270yrpo3-q /m b 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 hole4 i0y luwe829 k,kx++arrzozding a constant charge causes the energy stored in that cap 2ru0k4, 9izr+xeoyk+lz w8eaacitor 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 caus25i; a fkb,8nzx(bby les the energy stored in that c zn fx(; 5bk28byil,abapacitor 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 poingk5oy b6zxi1+ke4 q.lt B. What is the potential difference bz e6 5x+kilq b4yok1.getween 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, where ,su*;z0;j hurirca2z the potential is -50 V, *uzrac js 0uzi;h ;r2,to 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 rest, is accelerated through an elel xkqpr2j:/i61rhcpo+ lnf7d,eu/j 5ctric potential difference of 5k :julq1/nf2hx,p+le/5cj 67ropird00 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 rtvzdgt ;s sk(s - kft6hlx- r(1*vm/(electric potential difference o-g-/r mhk z(svfs xt(6rk1*t;tsdlv( f 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 through a potential difference(e sfyps/:c(zy,t87 varb 9v q of 1200 V. What sp ceyrv(/( y87:z9p qv ,tbsfsaeed 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 movingx s nltuccr3 10x3o+,g $8.5 \times 10^{18} \; electrons$?

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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 )et; dw9-5kza +pcmq*yg*u ykelerated through a potential difference of 500 V. W5* 9 kyq- +wud;mcgzapktey) *hat is the velocity 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 from l8;yt6g t;ksh o-svp;dzm0 qua-(t - frest through a potential difference, and afterward the ball( ztvo8smkt0tqd-- ; g;-h ;fay6ulps 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 electrical potential difference bpa . 1vw,iku+9.jk ithetween two parallel metal plates separated by 1.0 mm. What is the electric field betpkiikw u, h+ .va.j91tween 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, is directed p6lag,67hc- z2o/lav:j n3: nco smockarallel to the +x axis. If the potential at x ac, llohozo-6 a6j/s7gcnnvc3 m: 2k:= 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 towa9 ;7oc1pws*ys fpfa n8p5e2 kkrd the east. If the volt f7kp*28 esp19f ;a okcy5nwpsage 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?

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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 elec*tbh- ffvv -h:;lr,qvtric field of magnitude 3.0 V/m. What is the change in kinetic energy of the proto*vvlhvf,q- tb;f -r :hn?

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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, armhsw/omlh jo+v7 9c8 it3.s;xe connected to a 12-V battery. An elc8s;3.oix+ m shh7 t/jvw o9lmectron 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 a 12-V battery. An yk4a:ypecb )s 9 9)rttelectron 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 kinetic energy does the electron gaiy:)ptb k)a9s eyc9t4 rn?

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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 12-V batgy8u u-w; :0kx/5(ge yxevtdxtery. 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 is(5kvggx-x 0:t euyyw/ex8d;u 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 fiek7 1hi issx,qw 203-sdw;ickbq y:c*zld of 50 N/C directed toward the east. If the voltage measured relative to ground c0 iii :k*w3q7- 2w 1xb ks,h;dyszsqcat a given point 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 directed toward the eastb.q vlv :nrcfng8 lz.** -xtar-h(vq:. If the voltage measured relativev f.tqq h(z n-cabx*lr:n* rgvv8l.:- to ground 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 potential difference of 12bicc018 b7)ec ucb li5 V, it will acquire a kinetic energy (in the absence of frictic1b c 5b0c)l7cbi8ueion) 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 d 21ru2zcd w9lzistance 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. Fi /qsb9 d,zzm,d v-uxc:nd the electrical potential for the center of the metscdzbz- d: x9,mv/qu, er 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 chynlt;viy/ l 8::f:myuarge is at (3.0 m, 0). If the potential is taken to be zero fy: l uv;: mn:8/ytilyat 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 charge is at (3.0 m, 0)9 /jypdeg t b1v4k4f;k. If the potential is taken to be zero at infinity, what g /tjk;k4p9ebf y14vdis the electric potential 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 charfs x8dm2d)cpzx;7 criw d..vcnuy:7;ge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infin;fux.prx7 zc;s v2)md:.7cd iw8nydcity 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 charggzs4 :s 4dy(h ch-iu(ie +q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = iy 4i zs-s:4hgu(h(dc3.0 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 diagonallph s l:qsae9;l3ezle2x0u g 3/y opposite corners. In the other two corners are placed charges of +3.0 mC alp x/3 he:09e lsq;g3e2a lzsund -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 +2e,fp-;sqbqg .xn:(sotg r2sf a :0 6)yas 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 chargess + ym k tnk/ 4vb2qgejalrt.7p p884w4.+mqtr, each of 2.0 mC, at the corners of an equilateralq4eb+lp8mg/t7p s.k vmnat4.4q8jy+k tr 2rw 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 w9 v/aoad1,k.fib 9jncharged to 100 V.j9,a v9b kaf/i1 wndo?

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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 u n1v7 hbvzlabs09zto1u yt*x6(*p:tof 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 thev7wi-uk. erp r:1nf-a plates are separated by 0.050 mm. If the capacitance is 17.3 pF, whauew-nra: vr-ik1fp .7 t 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 ,k/sqw9o:c5g7tvjga s eq 5u2 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 has a plate separation of 5.0 cm. If the potentialfm42t,zv45 nxftv+ dn difference between tf,2 4nn+mx5fvv zt4dt he 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 connected y4t-*nman f:lsp7 1 1t abqv/wacross a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectriltma7vynn bp4 f /w1q-s:*1t ac 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 stored3xag6 ;4 asoln in the capacitl;a6g n4 o3sxaor?

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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 capav /mz,ua4t): hxkf8 wocitor. What is the energy stored in the capacito) ,kutxmf4/oz:hw8var?

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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 casfg7 xdgfean7r1,;.c pacitor when it is connected to a 12.0-V battery. How much work was done in charging this capacitor?n7x;rf.dg, 7egasc1 f

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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 shcw p+5av4d t,l,/qd 7zpuptbjai /q 22 k(5tlo 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 of aslhub-x 0+z54nx(l*e(lhu l zrea $1.5 \times 10^{-4} \; m^{2}$ 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 consists of plaqzwhrrcp+7a; aq ;dh )z+w2:ites 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 r -rb+4 dwf2ekelmn)p5 ,d*wcof 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 constructe1t6)0) hfp4 cyy+dzvymwdde,d 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 witon 0 5z;o7uk-e waxc+zsp3wj2h 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 conjpub f;hx; w11nected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fillj1x;huwf1pb; s 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 connectedv ti s.n2jl7f0a. e; nk .fr9*tb1wdse 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 o na. 7t;ibw2 r1l9* vf0tdn e.kfsj.sef 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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