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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 vec7:i/dlk dr684g gacg ntor?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulombj/c0 m hrppre-i3lrtw*d) h x/8)l( qx 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 z21 jsi4rw6k-+i 9jgeq)cby w from their surroundings. Object A has a net charge of excess electrons. Object B is -4q)cj 2r i9i6bz wg1sj+ywek 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 tyd22a)+hli n nhe direction 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 dire3zn yp07z ;gbsction 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 con 9s+xx4b*s3 sv svewatyh06 f7ducting 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 fro 6 k-d/f6robufxsq4p .m rest to a speed v by a 500 V potential difference. If the potential difference is fqpfo4uxd. /b 6rsk-6changed 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 at the same potential is referp)b8o ro0io )bsxu36y;8usagred 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 equipotent84tyqhwswh5q9m +*zyial surfac8h yw9mqs5 h qtz4w+*ye.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mustu0 *e ft eehu xqj1qc34+r44ft 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 partivl 5( w0b9udoccle carrying a charge equal to that on the electron asl 590cwo bv(ud 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 unit of m 1o(r,zaxg3h

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt co3 i7 p0j+0z sa1sqjow:afx 4c wetx4b-rresponds 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 atd18pncqg; t i965kta n a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away froic9t d; 581 antqpng6km 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 negative point ab5n6a v 5p7xdcharge is -100 V. What is the absolute poxv5 57nadb6pa tential 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 centere4x;tnog5k f + 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 at the square's center when each of the other corners is also filled withk+;54 f etnxgo 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 squ+n:vc p eu( r-+6lriueare 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 i(ru- l +:peuve+r6cnsquare'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 c+3gvnmfms3 c73svbh0 onsist 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 bhvvpy3 1e:e4 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 arera hfp/i3cb(,6 -v4*z dus hhe identical in every respect except that one has twice the plate area of the other. z a*ph/u4(fsibd3h 6-rvc ,ehIf 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 capacitance of C. If the w0ih, n/-u 9gibhh) h ljyb74parea of the plates is doubled and the distance between the plates is halved, what is theh ij i0g/wh79 bn4u-bp,hy)hl 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 remove9 qsm. lts:tz*d. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the p zls.sqtm :9*totential 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 capacitoycw +ta z5xf+xe4 -xy5r is weakened, the capacitx y xxe4fc 5t-w+yz+5aance 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 paralledwem7 1pih-n0l-plate capacitor are maintained with constant voltage by a-m 1en hi7p0wd battery as they are 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 :zgks b/4 estahwr :gz9;:dq0are maintained with constant voltage by a battery as they are pulled apart. 0aw:9esg r/hg:;b q4s kzt:zd 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 dielectrioxqt rega . el749my 1uj:0-:jcp)r grc material between the plates of a capcu-xmr:jp7t0e rjq.g1)e9a: r ly4ogacitor.
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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 3w ij5*2pdr poof a capacitor. *2pw ij5 r3pdo 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 *bxb ,hawv/.*1 irz ltof a capacitor holding a fixed charge. What happens to th v.zhx*ai ,*1t/bwb rle 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 connecl3tf x3)s/ dweted to a battery and becomes fully charged. The /)3xfw3et sd lcapacitor 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 ca0;+bv 4l9yhk zp)ukzppacitor holding a constant charge causes the enerzpk;9+kb vy4 ) pzuh0lgy stored in that 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 acrossllhw., (.9p mot2v8ze ut)us c a given capacitor causes the energy stored in that capa,loe).tvt8(c .hwu2usp9 l m zcitor 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 cwv. 521 q3 4purmwlmzto move 10 C of charge from point A to point B. What is the5m3r4 uw 2lmcwqzv .p1 potential difference 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 moving an electron from point A, where the potential is ;i fn;aoq zs9gc3u0(q ;u7fge-50 V, to point B, wher oc;gq 7g;0esnu a9;( 3zufifqe 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 electric potenst. fatlx,, .hd4ehh, tial difference of 500 V. What is the ,lx,hhdfh .ast,e4 t. 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 elehgs 1sj47qyfq8qi yle)a* (k( ctric potential difference of 500 V.fyes ( iy1kaghq)j8 ( q7lqs*4 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 zv q;y,p6) hpqops43sfalls through a potential difference of 1200 V. What speed do 3z6p4 qshq)spvy;o ,pes 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 07 sal l)a7ebodo 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 ish6aj:5 (necae accelerated through a potential difference of 500 V. What is the velhej(e ac:a5 n6ocity 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 objecta80*fstf fgl :9 :hipk is accelerated from rest through a potential difference, and afterward the ball is m: aff 09khpl s*tfg:8ioving 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 eu8fw+p (s o-rav c3+pllectrical potential difference between two parallel metal plates separated by 1r +pwpu- o 8la3f+vs(c.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 magnitudes /tr8kll1-j p of 500 V/m, is directed parallel to the +x axis. If the potejp1lt ks/r- 8lntial 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 elp s160k cyl o(irvd2*jectric 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 a point 1.0 m directly2jrcv* 6io01ypk (s dl 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 directi32msmcv 4/xy ed0dvp9 on of an electric field of magnitude 3.0 V/m. What is the c3d0d42me/p9 s myxv vchange 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, ub43 coj;hbo1,0yeg w separated 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 plat e3jo yu1g;ho,wcb40 be. 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, are2zko,w0u ju3ccy.4u g 1 stf7r 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, how much kinetic energy does the el 14j0 7kr3 .tcu,gf ysuczwou2ectron 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, separated by 0.20 m, are connected to a fbp9lw2w.jx312-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 0.050pw92 .3xwf bjl 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 toward the easa j:hsoe .76*r.fuow mt. If the voltage measured relative to ground at a given point in the f .6fo*.ma w7jres h:uoield 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 ea,*yg ,1, ;yz)5o te ihbvuph5lj 7iekwst. If the voltage measured relative to ground at a given point in the field is,1v, yek,w7bzt )*hhguyjlipi o 55;e 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 12w 1wg a821nseq V, it will acquire a kinetic energy (in 1qa281e wg wnsthe 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 dintm lfc3z/ 4m;stance 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. F, puxwy:(ez*l2ek0sfqakz * 5ind the electrical potenuf2y,:zawlzk *pe *esk 50q(x tial 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 -sy1p,s5q8 l-:li whsj2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the ele,y8- lqs1j 5w psi:hslctric 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)bv64nwo* wbs z8/iqj- 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 energy of a 1.0-nC charge at pointi*w s8-6b4ojzn wv/ bq (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, z f g7z h01un;4g57dxdft6vc3s ,quct 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 work required to brd;ch xf, 61gq7 t073s5f zczt4uuvgn ding 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 y+t3myt gmx(;rectangle of sides a and b. What is the potential at the center of the rectangle if q = ytgmt (xm;3y+ 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 +4.0py (m gqs4lc:fd5o6 ng) v dulxuwx+cc,)g/: 9 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.n( oxud, g /csg)vdg :pyql:954cu wm l+cxf)60 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, mc .cwp r4n:rws 71:r 7pggf6trass $6.64 \times 10^{-27} \; kg$) 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 chaa hx(n,bu /adqz4m6 uj)g h.3crges, each of 2.0 mC, at the corn 63.mc,hub xahgda4( zun q)j/ers 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 8mzd2m5z/igd a 2.0-mF capacitor when it is charged to 100 V2gm zd8/5 idzm?

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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 plp czb2 nl*k /mvet+,*zates 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, andn:ew/035 sulr(yk vuvk3mq.g the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate armvgqusnkuv3.:l3/y kr0 (w e5ea?

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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 0ofofu 9ubgt,x: b.g-4qrn 5uof 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 capacitoeutkte75err mm 0(7f:r has a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between theet70mt 57 :fu(keremr 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. Af7utwof0j5rr * /ruux.ter the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additionaluuo0ft5 7/r*ur. jrxw 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 cfr,yxk5,+*nokz t na4 apacitor. How much energy is stored in the capacitor?,4ko zka5fynt+r *,nx

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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 cag;r+(d wcyid 90s+ lytpacitor. What is the energy stored in the capacitor?+ +9dilgw;td(ry 0 cys

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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 6ryidijl 5:3wklx l+8ptd 0v6 when it is connected to a 12.0-V batte rdpli 0ldl3ji+vtyx: 6w 856kry. 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 charged so that it stog zds1k ekvoq)5r(p)3 res $2.0 \times 10^{-3} \; J$ 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 plates6xw;a5tw0o lpft+i;vvg4rp / -g 3m er 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 plates of awl /mhum;b9m:rea $1.5 \times 10^{-4} \; m^{2}$ 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 01sgw ax)htnm:., h bparea $1.5 \times 10^{-4} \; m^{2}$ 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 arlj .h.r ,:lhwaea 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 conlig(/ e/,l og 4;v0f, .gdkmyxiek-xbstructed 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 connected to ag4ywq vp10k*g3or t+o 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely t31w qg* og +rpoy04vkfills 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 batktbk(vpv kqr346 1k 8ytery 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 qkkk8tyvp(r3 1 bv64kthe voltage across the capacitor's plates after the slab is inserted?

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