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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 ve9v f2(d bffj/wctor?

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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-enpxk51 wvpj ( 8oek) 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 in0kv gr,/ j9pcpsulated from their surroundings. Object A has a net charge of excess electrons. pp/r c vg,kj90Object 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 eleci gl mv0k;4lpk3uipb:,y* )oztric 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 h.ji+ 6bgfavx. 8 ,pihdirection 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 hollo8au xb06 2sw5nf h6kchw 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 from re,mo6d /png mj6st to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the ndj, mo6/p g6mnew 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 iq8 8 6fzc b:15f ojk1uknczx4same 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 v ikv6 5vdc9rq6ww. yy+lr4v :point B along an equipotential surfacevl.r+c5 6d qy :v4kvw riyw9v6.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface- + lo+mh2yq5m5n nobx 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 by a particle carrying a charge z9le. 5owm( osequal to that on the electron as a result of moving through s(5 mzoow.9 ela 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 unit qpa7nys37)t bo-u7;xa4 dc hvq xfo 7/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 correspondpu:7hd wle4c+ lb 9i:*ozphn5s 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 disrwod ;x qr 2+w;d *wx8op2.paatance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the same point chargew.dr2 8p;aa+q;p dow2o*x rxw?

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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 negative point chargeuzmua f7 4,7gz..zul;h kpmlj)ac )+m is -100 V. What is the absolute potential 4.0 m away from the sa7f+u7 u; ml)uj.ma.azchgp)kz zl,4 mme 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 s0r;oksjcau6. su0g6w * mvm5 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 with a charge msvo sj mru5cugk6 s;a0w.*60of +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 ceq+ rvw x 4oqe9n,p-w7rnter of a square is 3.0 V when a charge of +Q is located at one of the square's corners. W+ qor r9x4, -vp7enwqwhat 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 cons-,s6rlipnn6+j+ uxl , ymbo. iist 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 volt9f) f oxup-+qe77w (iw. pfavl 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 re b fp:)9nfasm0spect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the largebp9f )n0:msaf r 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 caj8l av6ox0 ca jts)30apacitance of C. If the area of the plates is doubled and the distance betwcj8vajtsx603 o )laa0een 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. The prjcej4-7 enx1e;:+uz h nkd.bmw/3xp lates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the potential difference betuk4+ .e n3e;ex: pnzd7c j1brwmhx-/jween 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 capacq.jtd(5 ol2x yitor is weakened, the capacitance of that cad t. 5(2oyqljxpacitor

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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 c9 8zdt w(bdoi-apacitor are maintained with constant voltage by a battery as they are pulled apart. During this proceodw8d-t b9 iz(ss, 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-patc gfn60w:m9;ck t7w late capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to 7;9k6 0gwtc wn: cfatmthe 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 2buz-+e nxzclq1 w. frc4or64 for adding a dielectric material between the plates of a capacz41 cre6-q u4zn.b xrlw2fco+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 bet-+uo-8 oy dmnyween the plates of a capacitor. What happens to them8 noy-uy +-do 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 suched esq2o9 c8h3 as paper is placed between the plates of a capacitor holding a fixed charge. What happens to the electric fielde2qed 3sc 98oh 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 connect 5d 9ca 5jey36 1t -qii-xz-vfjqmf2mfed to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such vi-5mfyde q3if5 z2tjqx196-fj-m caa 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 cowru r6/ehiwy8j+ed i7e vwt;;4; zq,wnstant charge causes the energy stored in tht ;r zeijw 8 ry;e7+d;hve/64iww u,qwat 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 across a givew (;7/srwhb xrn capacitor causes the energy stored in that capaci/ r7 ;xshbr(wwtor 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 Bbk0o aeqq+ssdr963mu 1 f j6l, 1mq:m dkhqi13. What is the potential difference betweenk+qqs r qdslu69makbjefi013 mq6omh1d3 :, 1 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, wher a*,va12yiq*q4tfm fw3stt 7yv1c z(le the potential is -50 V, to point B, where the potential is +50 Vy7*tvv2ws(amt4q fi,q 3* zf t11lcy a, 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 potential ddp 0io.vof68y ifference of 500 V. What is the kinetic energy ip6fo8y. vo0 dof 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 electry.rgk3 c j dwi isd7750sj/)zric potential difference of 500 V. What is the speed of 3si)75/d.jriyk gjs 70rzc wdthe 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 potentiai( p/qyf,/cpu 9v c+psl difference of 1200 V. What speedvpf9ypip /ccu/s( q ,+ 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 f7n+,3ywh ++:flv qg 36bbbypmmn 5zomoving $8.5 \times 10^{18} \; electrons$?

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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 acg,;an wa:ya) e8az imb -:ma3fcelerated through a potential difference of 500 V. What is the velocitywzmae )bf -g 8::; m3,yaainaa 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 frkcj0lu dt uy geuy.,f;0nw)--6y.vljom rest through a potential difference, and afterward the ball isgc0j )l.-. vft -uy;unkyde0wu6ljy, 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 differe57 kwn,szir .rnce between two parallel metal plates separrin s,wr57k .zated 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 field, with a magnitude of 500 V/m,05 6ky qhzg rl)h7m-z4gyrh,a is directed parallel to the +x axis. If a)h7 5 g zyk0mgh r,lq64rz-hythe 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 electric1/lla+(ntde81wmn cy5n ba f(-s o(xu field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at +wbn8m1on((-t( fy5a dla/ usle cx1n 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 magnitue9- (t e(zufjude 3.0 V/m. What is the change in kinetitj-((uf eezu9 c 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 bn.oov*7p );o+feu htg y 0.20 m, are connected to a 12-V battery. An electron released from res7* eoo v+pgunt of.;)ht 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 bat6ml j6 0w7ab dvx ra*1wm(u3lvtery. An electron released from rest at a location 0.10 m from the negative plate. When the electron a 7xvwa1l 6m*(bal0wrdv3 j6murrives 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, sej0f y:y po4y.mparated by 0.20 m, are connected to a 12-V battery. An electron released fr.yyf:pj4o y0 mom 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 e 69y7 w 7u/lzyvqlwvg;lectric field of 50 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 point 1.0 m directly ezlugw9vy q7/6ylwv 7;ast 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 eastyjp1u cwf id28upydj:4j/ :+/v,xqg i. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage at a point 1+8 q4p21wj yu:xyijduv f:c /i/,jpd g.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 wi ;hi0ja1;qnq .bx:etz ll acquire a kinetic energy (in:qqiz1 xjht ;ne0;.ab 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 distans vqxl6*1(+m.vrzu slon -jt)ckdv93ce 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 ol e8u*kys jpttt o 2*ck (+dn9z2+h+vwf a meter stick. Find the electrical potentialt *+uzh +o e*yk+ksnj w tc9822vdl(pt 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 at (3.0 m,8fctu m..9wrx 0). If the potential is taken to be zero at infinity, what is the electric potential at point ctwu mf8..r9x (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 m9 be3z 5zx,sev(qz ej-, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge atqz5ez(93 ,bj evxz-e s 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 meo:3.t n y /uyznxr2*b, 0). If the potential is taken to be zero at infinity, w.ztrxe2yynb /u:o*n 3hat 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 rectangle of side j1o:nc y oaxm 32ck-)4ik+dv52fgzfms a and b. What is the +xm c 5yfg-djz1i m:vca 2n)ko 423kofpotential 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 diagonalljpsl1 1) 3au djm-qj,hy opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. Whamlh 3p1j a)du-1s,j qjt 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, masslq i9qm272to f,arhs8 $6.64 \times 10^{-27} \; kg$) 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, each of 2.0 mC, at the corv fh2+, qm6pfaners of an equilateral tria 2hp6v+, mafqfngle 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 charge(ks5fcm8xr )y d to 10)5sk 8crf(y mx0 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 capac2+hvs yp;x)nwa 7 a8lditor has plates 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 capacitodwvme ih j51+(r is filled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is thediwme+( v1h 5j 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 uf3b6l w79ha ;hr*y j .r;sndnarea $0.20 \; m^{2}$ 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 pohlrpk 3d;yn5fu/xhhs6rg y/7)u( ub -tential difference betweb(uh35;ryspgu -fk ryul dnx 6//7h)hen 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 battery. After c6z j:7d 9uv,z*t*n( zngz*tk+altgethe battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5)+ tg nz*9gltn67kej,t v : *acdz*uz(z. 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 storedb7o e,aces 9p- in thoce9a7 b,-sep e capacitor?

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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. What is the energb bgo tuz2;hce0c+:)py stored in the capaci+2zbo :;ch)ebp gtu0ctor?

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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 capacitor when it is connectde3 te+bvg45sov7u 6ged to a 12.0-V battery. How much work was done in charging t u7bg6t35vvo g4eed+shis 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 char.ixe7liuaj-6 .edy r h /etyzz(-12unged 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 p h9o pcl1ipnz1i/1, cjlates 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 consists of pi(igpz y9s,y4 ; .k)qg7syowmlates 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 capa+ 3n3e r9mg(z7yfrcjupl w w9-citor 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 constructed with plate ar(cdhchz3( i1 parf 3)swpx0;pea 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 wi 0x;zwolqtd+( )zia 3uo17 0f;tz+.yvc bnrkd th 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 battezh y.pa (fh2d*ry and becomes fully charged. The battery is removed and a slab of dielectric thayh 2fpad(. z*ht 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 becod3 lp/,mzfgc2 mes fully charged. The battery is removed and a slab of dielectric t fp,2ldg3mz c/hat 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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