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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 vector5 a7ys*-m yqiq(orrst 0l(i/i?

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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 itffo.jnqrx* ,s-68(u mu . mwis 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 ue,+h9*ojqe w surroundings. Object A has a net charg+*j9w ,eoheque 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 o 83i(iikd:;ex cqa,q;zb px1qf 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 movi;9 uyrdv/e6l wng in a direction 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 enjsv,(b89eby ba qs9d f 2v.6conducting 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 rest to a speed v bi j+-swurg (bk+12gcf y a 500 V potential difference. If the potential difference is c(i 1r2g -wjsgkf cu++bhanged 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 rerv(fbz6q ta;3f+rg 3yferred 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 alo*iz fwlds+b -;ng an equipotential surface.-d z b;*is+flw

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surwsf0+ d+6azah face 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 cl e ov(0oi:cez5c :/icarrying a charge equal to that on the electron as a result of moving through a poce 5/ ocl(ov0ci ::ezitential 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 utw0 mgi/1,adczhn7a (nit 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 tk5gsz5 6vu *azo

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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 jam )qe.9k jl4/f yo-ma positive point charge is 100 V.o9mjfmy-. lk q4ej )a/ What 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 negative poihs2i c9 ewm*+wd cc/7jnt charge is -100 V. What is the absolute potential 4.0 m away from the same point ch 7d+9m si*jh2e cc/wwcarge?

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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 when a cc:*mjml7,ni n harge 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 chal7m*mnn c,ij:rge 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 ce nbg79yyuy+,ed4wkn / nter of a square is 3.0 V when a charge of +Q is located at one of the square's corners. Whatb4 ynk +yd,wgyue79/ n 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 chargekbv**(fyshwy9;g rnli 4 n8y dv/ai5( s 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 is vg9ejnx +q7rngwq) h:2j (5aga

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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 that ou9j)wo1s/ jx one has twice the plate area of the other. If the smawo)9 jus1x/joller 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 capacitancems+ tg3gu sw37 of C. If the area of the plates is dou twm3s73g+ugsbled and 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-pluf vlh5 +q+5ykate capacitor fully 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 t55hu+ qf lyk+vo 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 between the plates fio7a tidw24 ooe3g1jte(z5 ) of a given capacitor is weakened, the capacitance of tzeg ooif(t4tw271aj)i d 3o5ehat 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 para7 9q za*k1k,i wd oomdajn//r;llel-plate capacitor are maintained with constant voltage by a battery as the*a7zi mk/;,/19dw o ojqnrkday 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 ar;m8 (bcsfjn1/7 b uzele maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during this zc8(l/; ne7 bjmfu1b sprocess?

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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 betwee -:p n 6:-;qqh:xgrlbainfss(n the plates of a capacqsr6iga pfxl;hns -:(n:b q-: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 plate;bd bw3j u1-3s brnkbkp7i;e3g8ya 2as of a capacitor. What happens to thaa;2gjd1;k7bb su8e k3bw3 bp yr 3i-ne 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 suca uel.:t r* ktg og2ui9aep,;2h as paper is placed between the plates of a capacitor holding a fixed charge. What hau. t2eu:pga 2kt,lr;e9og*iappens 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 becomey-5aco/e/ r pjs fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. Thpaj ory//-5c ee 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 capacw0:x.,pt akko :u0fx citor holding a constant charge causes the energy sto p wa:0tckf0ukx,:x. ored 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 acrossg9c; / wn ,qykejv4ak0 a given capacitor causes the energy stored in that capacitokkw,4;ygqa90/ v jenc r 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 kp.h x:)(q w;rgch9 ajto move 10 C of charge from point A to point B. What is the potential difference between poin.:rapqh w ;9(hgckx )jts 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)ton(r(g i:9exm jp h5i,bcs; electron from point A, where the potential is -50 V, to point B, where the po,; (( nio bmijpes 5:g)xcr9httential 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 r3- 00nwcj65gy)pmxx h5sbd lvest, is accelerated through an electric potential difference of 500 V. What i0-sd6w pxcblvm)gnh5 y3j 5x 0s 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 electric potential diffurx/k3( *hd h,iec ou;erence of 500 V. What udikr(,hu/c3 h eo ;*xis 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 protc:cw qgj 5a5v7-mkkqtf ky-4 ep4(-ti on falls through a potential difference of 1200 V. What speed does it acfea-ktym:k kq 5pcq(5 vgc j--iw44t7quire?

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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 moving yfad,od d7j/2 $8.5 \times 10^{18} \; electrons$?

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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 difference of 500 V. Wo kn;dw8g1u6*hu8c.rd 1m bed;k8wdp hat is the velocity of the electron after1dku.8ph;gdudc 8 6mr owbe wd;8nk*1ward?

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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 fidm0p 6+a*. *wrip c(nlmsgy/ io(bz)rom rest through a potential difference, and aftlmibpipi6n/ (s . w+*) a*yco(dgrzm 0erward the ball 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 betweenr(0mnlm6p gku9y c*7j0e j el4qyt. h+ two parallel metal planee ck70* u tqylp+4gj. 0m(hr6ymjl9tes separated 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, is directed parallel to t; qt*f ax pf38qi:huiv.ql2y-he +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at *;ax vf8qf :h q2pyqtui3.l-ix = 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-g /wlmp e uq80.mii/*/jd vusbea5m+/C directed toward the east. If the voltage measured relative to ground at a gig/mieem8p l-md5b v0 au/sq/.u+i*jw ven 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 5v 2j5ux6v )mdo8tqiqmagnitude 3.0 V/m. What is the change in kinetic energy of iqx6)v td 82qjm ou55vthe 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 by7+kotz drf6tb+n1quh+ h8l tb(ue7 o: 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 1.50 m from the positive pl+kbh uo t: +7nbzqh +6drou8te17tf(late, 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 a17xa 74ojd ;i mp-padb 12-V battery. An electron released from rest at amaap ox7j71 ib -dp;4d 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 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 connecuemgnk1ef 87 )ted 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, what is mfe8u g17e)nk 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 east. If tid5 uu:kktmxm+rp6 o*s6m; 8cck/1 c vhe voltage measured relative to ground at a given point in the field is 80 V, wha cx*ovri6pcm: m k/5kk+ duct8;s16um t 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 f 3u)/ips4 m nml,;uyf;id0w vtoward the east. If the voltage measured relatp);3ydim0l fsf;nvwu/u m , 4iive 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 8h g6r.p;iz9vnngdrt)1 e.ll , it will acquire a kinetic energy (6elndplt) 18z r 9r;g.hi .vgnin 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 distan3 q)jw2ti/rw dce 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. Find the electrical t1mr5s(svpop/ an p6 2potential for the cent1m(/prosa5v nt p2s 6per 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 esthjxp5neb2t a ,fznnc4w/e d0+-/2 m, 0). If the potential is taken to be zero at infinity, what is the electric potential ate4z-e2f,t wn naep2c5hbx/ns/jt+ d0 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, 03)t3uc(b zxix ) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zerc3z)i t(bu 3xxo at infinity, 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-nC charge is zd rs624xwn(y 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 6w4d x s(yznr2from 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 arus3-ou.e dh8,. .ysdbuo,gde e placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectad eyuoh,u d,s8de.3ub- g os..ngle 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 placi 3fb jq7* cmthwe j+niu 30kj(z;:te,ed in two diagonally opposite corners. In the other two corners are placed char7 m(+;eib* znu jew :t,3qf ik3cjtj0hges 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 (cpa(j1zlbs:v l t5)tz,harge +2e, 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 threav 6b+lvx:xo2e charges, each of 2.0 mC, at the corners of an equilateral talx2vvb: o+x6riangle 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 t(t0; o6; zucfd s7twblhe plates of a 2.0-mF capacitor when it is charged to 100 ;w0lbs6(d tzf;oc7t u 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 ofhylgg7,67js j ul vc08 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 plates are separag2ym8b eprs50 oh70rxted by 0.050 mm. If tp870m gobe2yh0rr5xshe capacitance 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 wh-z hkv;(6(*dod8wdmr i c3zplates 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 ey /c85uc k.cglyy4h7the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is cukyhy4g5lc / 8y.7 cethe 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 10t /1l4-w wckfw0-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additiwk- tw w4f1l/conal 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 +i5f/qmut/f fmuch energy is stored in the cf//qiutmf +5f apacitor?

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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 energy stored izq e72jqsser 2*1ceztv;4*m t n the capacitor vs27ee;zsqt2tz**m jqr 1 4ce?

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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 u,i me+:vxg8eob d2qd 1.oj 1uplates of a capacitor when it is connected to a 12.0-V battery. How much work was done in charging thv:2+o ue1dj xd,8.ugqei o 1bmis 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 wl y5+pq ef3d4du 0+y+i0x9lvmrjb 0bcharged 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 plates of are ng6ils4 fsb xzj;z /tqhj29;4a $1.5 \times 10^{-4} \; m^{2}$ 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 of4dl;pf,r/.8:x x s.pgrquzjf 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 consists o*cblg u ;;x q2*xg0obl ,9hemof 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 area exy: xf6:gc ;scnspn3 + th2*fof $0.40 \; m^{2}$ 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 plate area of j:n:2r0c ot6 brl wnuuluoaj0)p p 28.$0.40 \; m^{2}$ 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 becomes fulln nv ,jp42q0chy charged. The battery is removed and a slab of dielectric that completely fip40jnq hvcn2 ,lls 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 ndq3-+hj8br t s6pyg+ 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 5hp snqr6-+8t by3djg+.0, what is the voltage across the capacitor's plates after the slab is inserted?

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