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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 following is not a vector?bn,e 4 psip5z)

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulombsjkz, 8 g o);g-o6jqai is 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 surrnk.dot x9,p i;oundings. Object A hapo t;xdk.ni9,s a net charge 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 direction of the electric fie;al 57dnkixql5p:3 ujld

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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 the electrao,py (i8)q5mqmtbx1ic 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 o e0 chhv:cew,2keo( 2uuz0fv+n 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 fr6 jmiaefc5zd0fx5xluo; l;-(om rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 j;6xof5x ldf-izum a5le;0c(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 :t46r(qd e-gzg psn1mglt( *ysame 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 equipng hx7,vil. r*,htf q5otential surfacerih.g thn,x7*5l qfv ,.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfac*0emk cnp/a 7 gt; qtade1b9bmp .h4d.e must 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 byb8c :s.s* ikuz*kw ;wuksofahb 04v8, a particle carrying a charge equal to that on the electron;cku oki48sz8.:, kfb*0sbs *a wwu hv as a result of moving through 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 ungal),g n ct4p w5ir,3iit 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 correspo; uxynur 8mg5)nds to

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potentiaxx- 5py(g9u*ugwf4iw l at a distance of 2.0 m from a positive point charge is 100 V. Wha9(pwf uxgxgi5uy4 *-wt is the 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 distance of 2.0 m from a nw:o*v ;oj4t nl69ubm7xtz.lmegative point charge is -100 V. What is the absolute potential 4.m6.t xz m 9 vn4;7woob*ult:lj0 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 e:lv. mg -xz8yetqf;3V 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 ox:v3g.- elt8m ;zf yqether 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+umsafzx 3 d, bfbzb2; /2bi-fvn4 ud3n a charge of +Q is located at one of the square's corn+s d32m4bd-bz /2fbfb nvuu,f zx;3aiers. 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 chargfs/7ctn y( ent a3pj0+es 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 ed) t9t:ng;t8 ea0crt-gu)q w is 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 respecj+l:-ikbip, lt except that one has twice the plate area of the other. If the smaller capacitor has capacitanc j,+pkiil:- ble 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 car )4 a )4*hjvxzjkapl3pacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is t 44jr*akzx) pa) 3ljhvhe 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 full cfzfbeo(y973 x+qz 9by and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the potential difference between the plates as they are being separat x9 (fbfo z3qc+zbye97ed?

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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 capacitor is clyn0l8/o jmfe,0 qt1weakened, the capacitance of that capelnjm8 f,t 0/0l 1coyqacitor

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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 arvvu6h m6zxrgh32we ,, e maintained with constant voltage by a battery as they arz2x3we ,h mv6ur,6hv ge 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 maintg;3c a -kk8ogfnc92 ixained with constant voltage by a battery as they are pulled apart. What happens to t8kixo cggca k n239;f-he 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 material betwevet 4hgtxi7k- wg oj. -zr-w9;en the plates of a capa79 g-wjr-w -hoik.gtt;4xe vz citor.
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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 a capacq l77a f m5xbxiera7l5tl v-5-itor. Whatetr 5-75bm-l7x av7 ll5 afxqi 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 between the pla..n:.s em mviwtes of a capacitor holding a fixed charge. What happens to the m...nv e :wmsielectric 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 and0jrts74 vwya qy,3isfp 3:8pl becomes fully charged. The ca4 y0w3as3 q,ty vfis7l:j p8prpacitor 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 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 ;r6-fvhlpn p, holding a constant charge causes the energy stored in that capacitor ;6pf-,pnv rlhto

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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 sto5lko2 0m-fi;oh nj5b ired in that capacitoriioj2lo0 5-bkn5mf ;h 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 kaq )xuhf :;*qy*9oraj *ym3xC of charge from point A to point B. What is the potential dau :h;3xmy*9yjr **oxfakqq )ifference 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 movo q00np3bk*rying an electron from point A, where the potential is -50 V, to point B, where the potential is +50 V, iskq y*n0por03b

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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 electric pm/kdowsu qu 6 hcnr-b c17/c06otential difference of 500 V. What is the kinetic energy of the m661u/n0kcuhqscdor -/c7 wbproton?

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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 electric potential 0z2l7z m(5mirp:ta 9dtwwv2 f differe p9a(zz0 mvw5mdit:2l 7t rf2wnce of 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 of xd k:h 28sx/yd )to9ac1200 V. What speed doeh/y asx92tddx8kc o ):s 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 movin;cj;npt.od ro ,gzh8 3g $8.5 \times 10^{18} \; electrons$?

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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 di/zc dj f9/s5nbfference of 500 V. What is the veloci5nbdsc /9zf j/ty 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. Tqd-)b vk3trq; he object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potent-qv 3bkr;dq)t ial 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 potenti j.fkpd uia u02a*d(-xal difference between two parallel metal plates separated by 1.0 mm. What is the electric du f.j-x*id aukap02( 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 fieehdtumo(u ry *5;;/b jld, with a magnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at x = 2.0 u; * rbumh teo(djy5;/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 elhd6 3vebk+j-nvg6 g)c4 .bcipxj/ nzzc56;gdectric field of 50 N/C directed toward the east. If the voltage measured relc5zn)z6db6c6ndx;.g g4b h gv pejkci v+-3/jative 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 electric field of magnituda6l cgy;k 6 mkrfp91t3e 3.0 V/m. What is the chfgp1;crl 6 tm9k6a 3kyange in kinetic energy 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, areg 8,.ljst )stupp:;th 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 m from the positive plate, what is :8pphj;t)s tslug, .t 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, sepatmq*(x r;d z9wrated by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m t(xdqwr *9mz ;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, separvpkp ld x/5,q5ated by 0.20 m, are connected to a 12-V battery. An elek d/5 vlpxp5,qctron 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 towarhrvuksx.nie /mxg ;08iw9pwv5(7 u + zd the east. If the voltage measured relative to ground a 9 u7pmgr iwk(.u8s0ixnew+xv zv;/5ht 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 east.d801w t-y lbcs If the vollt-cw 8s d0y1btage 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 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, inc1yx*q oz(* xt will acquire a kineti1xcy(*xn *z oqc energy (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 x:sl k6f6tlm(9biccg i5,b *t 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 enk/ .6d3zcwbfq6) d(jcro 8aysds of a meter stick. Find the electrical potential for the center of the macb86y sd/6)(r o jckw3z.d qfeter 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 adfv05 rviq3ndi.ui wqq-*),j -2.0-nC charge is at (3.0 m, 0). If the potential isni,0iqjidf.r-qd 53vu v* )qw taken to be zero at 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 nb+ *z uglcvld4.+bz7.nr*v 8onnn / mxj,2 xb(0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infin n m.2+nxdvn rn lvx4*b.ol8 njzb*,7cbgu/z +ity, what is 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-neysg*lx(ae *8-t i*axqh* wc7e,x4q x C charge 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-q q*ic-a xse gex47al,*ex*8 (*thxw ynC 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 my/zo0nr3(qllfqoo bn/hn1 ,0hzu, 7 sides a and b. What is the potential at the center of the rectang nyohh/fo3z1/( bo,nmnl7zlqr0,0uq le 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 pdsba*vz*o / *claced in two diagonally opposite corners. In the other two corner/ *dv*c*bszo as are placed charges 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 +2e, ycc,h/bkfm. lxatb;3ua 1r (:pw+)oqmass $6.64 \times 10^{-27} \; kg$) 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/+cmuc.0kudn *+(jghsd kjg6ch of 2.0 mC, at the corners of an equilaterakj+mcj(c u6k+.ugs / h*0 ndgdl 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 charg c(fibfbx-d ap)tga0w2;e :(eed to 100 V?e2(xbe(wc-iat f )dga:fp0b ;

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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 pla gy74/ fo8m2w0,h;eoqj xtwf ktes 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 plat 5 k9ust;vh;xwes are separated by 0.050 mm. If the capacitantsvw 9;u;5khxce 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 plate:)abn ;r7xxq fp*s k,us 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 potential haeb;x -vh5kdd9mw q4jl7 +a6 difference betw- ;7dqwb v6mjxah4heldak9 5+een 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 connected across a 100-V yf0riba6x5i8 battery. After the battery fully charges the capacitor, the capacitor is immerseay 6ifi xbr058d 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 .cuc.:3q zg+d2yfenl )xs5 uhstored in the capacitor?:+fg)ch e5xl. 3.2 syczu uqnd

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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 capacitorzl9e( dc )*ufh nt4k6/vmn2nj . What is the energy stored in the capaci6 zklv)cd/h*un9 4j2nnet( f mtor?

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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 capac(cww-dqs.; dy itor when it is connected to a 12.0-V battery. How much wdw(; -.cwdysqork 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 that2q4p*:sxsa;zx s(2ufdk ao */pa)aw u 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 aif 3 xwg12tln.h+f-9 iatu yge++ru(nrea $1.5 \times 10^{-4} \; m^{2}$ 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 plates oo kemmj +) bcv8yy0r-y8 :yg(if 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 of area /c 4mjmcf;*z x$1.5 \times 10^{-4} \; m^{2}$ 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 plak,f-+;v s9pbs l3i4 xmi e)rfaf0na;ute 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 with)w9+xedb5 nv 1yrqj* d 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 c ucg*s++n pvv5onnected 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 capacitance ofvp+g u+ cs*vn5 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 conywmb* b, ql0o; t:f4vsnected 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 the slabs,bbq o 0;mfy:wlt4*v is inserted?

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