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习题练习：Physics Unit17: Electric Potential
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 75 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；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。本试卷的直接作答链接 https://tiku.one/test75.html
 作者: admin  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 匿名未登录  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 imdtdiq(1i:8a1dv5ix 0 ef(e is not a vector?

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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 to 18pal 9hr0qzd90vdov1aw /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 0i u4 j2ewq6eptheir surroundings. Object A hae0j2 qe 6u4iwps 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 electridykad9 w-i/ 5)gcpq xit)9:r xc 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 movin1hs/d e 6pk34t;y yzcnuhp67gg 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 corhvt2jc1g n1 0nducting 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 ry 08,)au0nw zxae)uus est to a speed v by a 500 V potential differenceu0ux) sa 0z)u,neway8. If the potential difference is changed 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 8tnyi xim+5xsrc-baluda6 a (0 94nq1same 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 pn /nqmytd / xk d/:ci(h:v1wk8u;k9bj oint A to point B along an equipotential surfacecx(du8mq1knni/;k/v w :ybk 9dt h:/j .

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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 fgf c,3w64xq 8 jka9(eqa ;2jifreuf6ao;k u0be

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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 equal to that oyn czc9au1, k j7 qdfx3ly-bj3pa x+43n the electron as a result of movingkubc1dxz33 3naja 974j +,yclqy- xpf 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 ofner er8/6u zx3

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt corresponcru257ckgxo x8,j z+m ds 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 distance of 2.0 m from a p0z (4rm-(l,mafllkd positive point charge is 100 V. What is the absolufm (rzpk4- a ,0ld(mllte 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 neg 34ldihwkk- u.ative point charge is -100 V. What is the absolut.li3 kk4hwu-de 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 exak5zq24xbfih8wc s, ; q a7z/yqct center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the a,q7 s;hqabizfq4 z5y8/xckw 2bsolute potential at the square's center when 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 square is 3.0 V when a charge)1c/g xmu9cer of +Q is located at one of the squxgm /ecrc1u9) are's corners. 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 charges that ane 7 xhk0/t-xare

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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 a; ;cwz m8gf0el

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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 excep+s a4av +v1ild xvi+z8t that one has twice the plate area of the other. If the smalle+z lv4vaa8+is xiv1+dr 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 capacitancj l; bniawn x7rum+3:aqm0g/3e of C. If the area of the plates is doubled and the distance betweenbga/m:;lq7r+xu3n i03 aj nwm 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-plmcd j8x1nl2z2m, ndt :ate capacitor fully and then is removed. The plates are immediat2ltcm ,mn1 j8dd:nzx2ely 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 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 capacitor is weakened,ge +*7w bve27 ttuzt;z the capacitance of that capacite+ 7z;uzwbtt2t7g v*eor

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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 are 7n.09lbzfg x hmaintained with constant voltage by a baf7.b 0h lgxz9nttery 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 ca.2(sn ve.pxdk pacitor are maintained with constant voltage by a battery as they arevd2ne.( spx. k pulled apart. 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 dielectric material bs) f4e lkh+xp/i)ts 3metween the plates of a capacihlk)e spmft )s/3xi+4 tor.
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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 qi06a0 6 z)8rxe rod.a 6awbe j(85hlhvvh7cwplates of a capacitor. What happens to th 0ze alv)wi06orvq cew5 86h(xh78 b jaahd.r6e 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 a mhyy9wi/+ c/5:j8,dorutubt capacitor holding a fixed charge. What happ r9wmthbot,:+c/ud5 8iyuj/y ens 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 becomes fully ca5+r +xcww o0,6.dmyx zbvh6zharged. The capacitor is then disconnected, and the separationx,c bz.6 r5m6vo+z0xwd +wayh 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 holding a constant charge caus,ge /fgcez-gr d5 o(5ues the energy stored in thatgge-/ eocrz,( 5uf d5g 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 vg ei-4( ryh*eo(kbhqb /5avzm61d;nacross a given capacitor causes the energy stored in that capacitobev;(/mb-neiz5 vgqhrah1k*(4d oy6 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 to move 10 C of chargelpr*0k c6kq7h from point A to point B. What is the potential difference bet0qh rl7k6* ckpween 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, wherc r* zy7c 7fic 7mg6ji8t,jkm-e the potential is -50 V, to point B, where the potentialym7fc igztc ,67*c 8ikr 7j-mj 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 e9 xud-uqj97s7gazzez p52 . kelectric potential difference of 500 V. What is the kz2q7k psagj9uzdxe- z e.97u5inetic 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 dif9i* cvb;p pg(n 0gt/bwference pp;0*/gv(bcg b nitw9of 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 4r fi-3ij w j6fw*cdze. av3w1through a potential difference of 1200 V. What swjc3a3.4diffji 1zw*-e v6w rpeed 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 moving0zhmb v)az0r(q-u7v l $8.5 \times 10^{18} \; electrons$?

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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 dvmx( ,s voi*e*aw6;+ ,vnevklifference of 500 V. What is *mexa e,+ il;(6snw,vvk *vov the velocity 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. T-v2bj uw m(2dlhe object is accelerated from rest th 2j2wmvd-u (blrough a potential difference, and afterward 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 potiy7 r qiv9)7sfential difference between two parallel metal7sviyiq) 9r 7f plates 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 Vgshk5nh09sm,* :vc u y/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potentialys n0sv:mu5h, * cgh9k 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 electric field of 50 N/C directed - k7c9e3f, gyyl* o skzpnu9mnogh;-6toward 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 directly westh6y *sok-;gy9 nngmu-37f9zk ceo,pl 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 directionxewpw5zcf/;9 - mpqt-v)5 z jw of an electric field of magnitude 3.0 V/m. What is the chang 95we;xpp wf5-vqj zt-/m wz)ce 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, are connected to a 1q5*0h srlltn.zo gs+z4r9rm3 2-V battery. An electron releasedqh0*lrlzgt r3 sr+.9os m54zn 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 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 battery. An ee5s8su kf (.olkvw 2:qlectron released from rest at a location 0.10 m from se lkwfuosvk.q (:2 85the 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, arei dglp088m* w7 5idvbn 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 wlm d8pndi0givb*578the 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 east. Ihig crys+8 qpnj-04* zf 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 east of the8 +y 0rj *hi4gp-qnczs 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 directedgom yb6 +3nq/b toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the vo6 mb+ny3bqg/ oltage 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 ofmx,1xjv e2a6ytq 8 my1 12 V, it will acquire a kinetic energy (in the absence of fmevtyyx,6 m1x18j2aq riction) 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 di;8h2nvluc - dnstance 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 electriq43-;l0wkmu rk *edidn5ah*gcal potential for the center of the meter stick4nka5mh rli; *d d-u0w qke*g3.

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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 i9lzb3 o3dzuqf7;j a/ xs at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential at xf3o/ujbl9; 7zdq 3zapoint (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) and0 qxi/reul.avgv;ouc j0bg j, 1md; 6. a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infini u iolq;jbj6e/.v1 dcga0x ; ,rvm.0guty, 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 at (3.0 m, 07qc(qm b 9sqzl+ma6a) ). If the potential is taken to be zero at infinity, what is the work req+zqqa m la6bm(sc7 9)quired 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 2 zvc;fk -x1k 7yvrs5i+1zzi pcorners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, and b ;-f1x7c yvz+riizp5 sz2kv k1= 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 ar.f+d-,61bzfeeb a ftae placed in two diagonally opposite corners. In the other two corners are placed c.fe+ f bbad6e,tf- a1zharges 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 (cha g(urzz-9z q1;paz9lul la8y4rge +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 l2r+ ufw,pp wz: l1gc+three charges, each of 2.0 mC, at the corners of an eq+,f+zp w :l r1uplg2cwuilateral 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 )ubpe4h *tya* it is charged to 1004ae ybp**u)h t 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 plattknp+h0n 0v0 des 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, a(o;d wspt )4hiyf6 x)pa p)/wfnd the plates are separated by 0.050 mm. If the cotw)h) y)xf;i4 6a ps/dw(pfp apacitance 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 capacito /l wt/ky8zjj ,h-hckft h rb4vy926o-r has plates 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 sep5 km6/q d 0nlrzp+kua)aration of 5.0 cm. If the potential difference between the plk+ al06zukrm 5/)qnpdates 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 the bat *0j lgmjs5j1utery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remained connected during th1 g* 5usml0jjje 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 muc: kud8bg4 )3xii rbu.xh energy is stored in tg 34udx bi k.x8:irb)uhe 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 energy stored in thj ue 3swjae+rr tu 8/t5b /0bvyca11-ge capacitor?t 3/e-e+8as jbr1gu/aw0jby 1 vrc5tu

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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 theble.qyme0na 1 2 ow8;tt(9ts k plates of a capacitor when it is connected to a 12.0-V battery. How much0wt( s9y1 ;qmelk.o tban8 2et 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 chzbuk1dp(w3s5dde3- :l n4oa kps m 2:uarged 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 ar5;8i6nz qiw gpea $1.5 \times 10^{-4} \; m^{2}$ 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 consisqt +ci8lw-u( z1 q (zbfyirc+ha+. :xlk3qdm,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 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 + q8 vn.*oflncplates 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 plateu* hxdq89ubb9 huy54m 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 iye:m0 :xetw d*s constructed 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 twmsed ;,zjl (t jh;:t7o 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. Itds;ewj, (z hj7: ;mltf 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 con f.8s, 4upqviwnected 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 slab is insuf8 viwq p,.4serted?

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