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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://mail.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://mail.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?pv r)rg.1aes.i o;;ha

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulom+ r(x w4fu p:pqpb(91ao;sglib 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 froo,,,he1 a*t 8mtqj hpfm their surroundings. Object A has a net charge of excess electrons. Object ,,fmt8oh e,h*p a1tjq 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 directip9+;a++ sjm b;tzjiu rnz* rb/on 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 of, h jq d8qm 6do-reaj( y)o5rdqu*c*3e u,m0gpposite 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 conducns sy/ -nhc2ern5+ptlh1h0k :ting 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 acce,j8j)x1,hg lur ou sd-lerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will th, r1ljjxuhu8go ,sd)-e 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 thjzqg8c/m,49sp6pp ,rwfh; cre 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 td)/4:kird l yno point B along an equipotential surface )i ylrdkdn/4:.

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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 bo8o fu9 d5yyq14ehbdus5 m,aq 71lu4o e

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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 mgv kt(d.1k21ldnd0 u a charge equal to that on the electron as a result of moving through a potential differ(ng0.tk2kvmul 1 dd1dence 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 unm-vf*emz j.-bi fo/- :3vjak jit 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 to4 vvp:skc*vi .

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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 pointoa6 dtu htxa+ /4b0i1n;3tu6nx oui:f charge is 100 V. What is the absolute potential 4.0 m away from the sam1:ftu;34 x 6h ati0dauio6nb/utx +no e 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 frw3aotgd3 5u4 eom a negative point charge is -10oagudtew33 540 V. What is the absolute 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 vn..m.lknvqjr 2w26 mwhen a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center 2.n.klqnwvm2.rm v 6jwhen 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 sq6;lb*5 o;p(cr+bxpeyde ;ex y uare 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 a ; b6cb5o;ryey x+(lp;xpede* 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 ofjl68d (7 26ougdos tnt 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 i mcz(4;o)liv vvk -xij*k,f5p s 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 respecs) 2slnx9:nv6dsge 4xtl9f0bt except that one has twice the plate area of the other. If the smaller :4 v )f9lxes xsd2sbt 9l06gnncapacitor 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 of41 4 qnfd ,0s pe3v5coli/k 6rguv0gjs C. If the area of the plates is doubled and the distance between the platesuvslgj/p 4 0ekon r 1is53fc ,6g40dqv 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 6s36ekpur/ 6hrik i-xand then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charg6r3sk 6e6i-hi ku rx/pe 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 rvtx0/x3y ec( between the plates of a given capacitor is weakened, the capacitance of that capacitorvtce3 x/(xr0y

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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-plem ) f(fdhpvupuf0- xmz253t )ate capacitor are maintained with constant voltage by a battery as they are pulled apart. During dpxfu)fu35( 20m) fhev-mpzt 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 witv*vx+jxit qj : hda8e) ojv6w)x,qd(ocq c018h constant voltage by a battery as they are pulled apart. What happens to the strength of the electricw6c ,j0hce ivx 1(vo+)q:qvj a8jtdd )8o q*xx 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 jux1qo8g3z*( 3kkce j between the plates of a capacj3 u3xjg1 zkq(o*k8ce itor.
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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 ;+g ey8qpzgimtef;uu , ..pa5of a capacitor.i;5 .ae+yztefgp8u gpq;mu., What 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 plates of a07(pkhlqisqb. j-7z b capacitor holding a fixed charlj zip khs-07bb.7(qqge. 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 bee (. einu,+ q7eqh)ik51 awr0rj4cu o;2ummxzcomes fully charged. The capacitor0. 7n e; r)qi+m1jo4uizuea(wq h,er5uckx2m 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 hold)*wccal /; lzhing a constant charge causes the energy stored in t *zhaw;l)l/cc hat 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 acros:fx. j:8 gf0vv w .daunlug0;rs a given capacitor causes the energy stored in that capacito0 wg:r8.a0guf.fndv;:v l jxur 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 tydf /j8l/cxt7n s6ve i8lg)7k o point B. What is the potential difference between points A anel )7 nv//k6tljsxf7 c8 y8digd 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 pointp) z z6fktbz*+ A, where the potential is -50 V, to point B, where the p*zz) +z6 ptkfbotential 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 electric potentihit lv./a//yn al difference of 500 V. What is the kinetic ener/ vhyt.// ialngy 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 electric potential dif8 .batz c,,godference of 500 V. What is the speed of the protonb.tzc ,a,od 8g?

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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 pr:xi : q:w np)2xcdyntax) 3nuwf/q*7hoton falls through a potential difference of 1200 V. What speeu7hicn/txwf ayn2 n3qq:x) d )w:x*: pd 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 -,puk rbg u05-wll:zmdo 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/k9 oxtap7+du2i j5 v7hcp rwt9 ym5:t is accelerated through a potential difference of 500 V. What is the velw mvi/7xtuat k:c92 r yohdt 7p+pj595ocity 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 chyjd1g8ex4 *( konx1x o.h9 zix b0q8qvarge of 20 mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is thi1o.db qyzj heg8( k94n8ox1xqxv0x*e 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 po8rad-dh7anbd; t*-b2g ;t k la:nt/f wtential difference between two parallel metal plates separated by 1.0tkd8;7dd f2a-n rh :lwb-nt/ ;bta*ag 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 field, with a mag(qd3j ,x,n6ji oazrj2nitude 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 jojqa2, dixjnrz, 36( = 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 e a0qo h:1l +z8x9unsjgast. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a lq0 ao9u :8jzhg+1s xnpoint 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 anvd;uz av :+yb h:g1tyq:8bgm2 electric field of magnitude 3.0 V/m. What is the change i gmdyhuz2q8;b ay+v gbvt:1::n 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, are cb6:1/ ;ga mw63owsg-zwevhiw(ku5v monnected to a 12-V battery. An electron released w36 u-a w(mgo6wk/es5v z: b gwh;1imvfrom 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 sf 2n4s6gly,abattery. 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 posit64 lfs, n2gsayive 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, separ -2hjpgae,wto) 22zvrated 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, whatt2h gpw),jvz2- ea2or 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 50xymxwdf ( 9 g)x5x*.zv miu(+t7bk +xz N/C directed toward the east. If the voltage measured relative to ground at a given point in the field ix(w) 9(+.vfk y7 x5bzx u+xzdmt*i gmxs 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 tovt: w/sim32pq zoez*80ld5hv ward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the volta5tqiv0 w*dps3l em h oz28/zv:ge 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 acqut;8 svbd,; xi iq7 hh3ckk(u*sire a kinetic energy (in tsq 3;(tv* idxh,u7 8k;bschikhe 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 distance of ial w8pr5gf(vcl.q/ -b 1m i:q$5.0 \times 10^{-10} \; m$ 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 metererp tz*9 mqidk,b+sr*e8 y/f8 stick. Find the electrical potential*b9 mq ,ze e fry8tpir/8kd*s+ for the center of the meter 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 charge is aci/1bvdj15v.f tq 9iz t (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric 9j1/5zdiv q.t vfb1ic 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 yl-qc0tx/sw rd+cpu*o 1 il )(f,eo5c(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 potential enersr5/qw-p otui* fl1d, cl x0ccy+e)o(gy 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 mf8v-w o,go5qq6n p*ej, 0). If the potential is8vqq *n,6gep5woo jf- taken 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 placed at the corners of a c w 8scg4n,/fjrectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a ncj4/c fsg,w8= 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 diau/pmd(ragf-+r2l-ap gt u. n:gonally opposite corners. In the other two c- (2.raat:dpruf+n lugmg/-p orners 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, mass6 vsiiac2 0;wl $6.64 \times 10^{-27} \; kg$) 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 charg :mhj*5o6-atcw)n h-gymiv0q es, each of 2.0 mC, at the corners of an equilateral wh5gv )6j*m-nhqo :t0y c -amitriangle 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 dzi ra g 0wze5cy 4:n/q8v5/ffit is charged to 100 gfeifqwa//y 5z0nr:d cv8 z54 V?

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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 of6.j q a4d4vrglo, scy;uj -3 ftn+zvc3 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 f5 h9w;u a75kemblb8eiilled with air, and the plates are separated by 0.050 mm. If the capacitance is 15uw7el; bib mah9k58e7.3 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 platesfxy ,h wg63t-v3i/ kni 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 capaciatzf p5:0*k 5nxs)gfqpm td36 tor has a plate separation of 5.0 cm. If the potential difference between the plates is 2*fp6fxpg5 k)ztma5 sd3 0n:tq000 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 a33p 9*eq hhan2c yvn.c 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additionalchc9qn.yn3 v ah3*p2 e 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 s g; d.g6kinvjmf7t,om ,qjg* (tored in the capacito j;gmdk(o,n*jgi7v fq ,.gm6tr?

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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 capacitor. Whay v)te,emk3ur i,r5l (t is the energy stored in the capacitor?, tukv lyr5(iee ,3rm)

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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 ox. 9 rcj:,fwd d9vt)e6tbuf/ df a capacitor when it is connected to a 12.0-V batdt ur .edbf6cwf9: /x,vd 9tj)tery. 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 is 38v2d2r/w 4 sykycjukcharged 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 hgs.t ieby va( 610ok.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 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 consiso) -mn/qq+h5q opk+e /pga3uuts 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 consis lc7leqjj/o2 ,ts 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 cap fjtykt230q4p6 k6h,y hv* vnyacitor 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 is constructed with plasgw( ilfjzg0 9c1tst pq 310w/te 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 be j eo .o.rd;5hc+b2d 8mdpgw3bcomes fully charged. The batter5 bp+bdoh.ode .28jcmw dg3; ry 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 becomesy8y:/:hpap.mg;gxszx)t)im5uy2sc hr - i .z fully charged. The battery is removed and a slab of dielectric that completely filly2z5x 8 yh:czysis.pg:.umt)- apm/)rixgh ;s 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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