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习题练习：Physics Unit17: Electric Potential
本习题练习来源于51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)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://51fly.win/test75.html
 作者: physics  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 is not a vrc7;mb;1 uilk,eyh;ci 2,aq+daee5y ector?

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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 ic3icpcu* ( k9gs 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 dj 2pn3 uar3-:p0yn i*) ely3b:idvmu objects are insulated from their surroundings. Object A has a net charge of exceupr *ja-i)m enb2:l:py i 303vu3n ddyss 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 nba+(h tq-.ycdirection 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 movinx j+dcppodq . 0p;,k1sg 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 h/::kx*kyvwak ollow 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 pp+gfo358vtts2mh 1d:ym/ wib we5l :from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 20bth v:1d pmlwyof23ws :m5g/+ e8tpi 500 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 akbbtka61+ 8xft the 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 to point B alonw7fwt0 1u2p3lqspqjp j8 1bc0g an equipotential surfacepup2lqb s7c8jt3f0wp jq01 w1.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface musz :hx)qvd6/jc t 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 equph2 fkf vjv)4rj56o a+al to that on the electron as a result of mov jrfopfk6 h24)vaj+5v ing 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 isjtx .p ;14g5 usqmpgh1 a unit 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 correspytb 2 v3qtn8/gonds 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 n4s61wt f 6/bjof2zb wdistance of 2.0 m from a positive point charge is 100 V. What is the absolute z1b tbf662wfwjs/4n opotential 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 rd ni/e/a y :58whbrz)2.0 m from a negative point charge is -100 V. What is the absolute potentiaeza//h)riw8 5 d yb:nrl 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 when a w+7 v14pg3euezug/ o*8yd p/:hjt9aglt zh 9ccharge of +Q is located at one of the square's corners. 7ua9+3/1g/zpc tltej h8h* ogdp v:ge4yuz 9wWhat is the absolute 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 cente8oumz b7 wu8t3q2 ti/jr of a square is 3.0 V when a charge of +Q is located juo/u zmbw2tq78t38 i at one of the square'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)/wy2fk. ibz9bb6ozcn cp;/q7up: zo 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 2n0 tikc/g( nxis 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 identh fxe+ua5*g;bvhp u2i w814rj ical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one hu ;1a5w4rg+ 8xp huvhejib 2*fas 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 qj4-ja m57gsa4+ jjyyrw. r.qe/ zi0ia capacitance of C. If the area of the plates is doubled and the distance between q..a0 4/jyzgyjrje ri-7sj 5m+a 4wi qthe 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 paral059bl2 kfz0skc8cvfdyl q )u.lel-plate 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 to z0 lbv)fkyds5u ck 8q09 .lfc2the 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 weakecy,xq/z p0lc 6ned, the capacitance of that capacit,lzqc px 6y0/cor

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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 maintained with constbzsiy3: 4u sp3r*o9kuant voltage by a battery as they are pulled apart. During this process, the amount of charge on the rz*u4y3ss3 9 bpk:uioplates 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 with con.o2-)wpbivtaxwhkz ;s+ -w:ustant voltage by a battery as they are pulled apart. What happens to the strength of the electric fipu bv aikz.w2 o-h:s; )x+ww-teld 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 bez2 hg bgm+n jx12zc:.itween the plates of a capab gc2 ghx:. +1izjnmz2citor.
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material suw;pn 3c/zi jjeu l5e j43lp9f*ch as paper is placed between the plates of a capacitor. What happens to the capacitai j;ew * pfec3n3ll/jj45 p9zunce?

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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 pzr3i4i rlp7b-lates of a capacitor holding a fixed charge. What happens to the electric field between the - ir473pb izlrplates?

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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 connetc/m)tel o7pg/bk; f9cted to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increagb/);lt 7c/etfk o pm9sed 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 rm2 j)gg4laalc-2ky ow +ng7)of a capacitor holding a constant charge causes the energy stoj lo7 nwy+k2lag m2c4a-rg)g)red 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 acr:klxwp+:8n gv g,cl9 yoss a given capacitor causes the energy stored in that capacitor l+:l ,pxn9 8gkc:vgw yto

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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 :; ev8h 0q.je1jewlti point B. What is the potential difference betweelet:jv0jq. e w8 eh;1in 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 i n0vxpun( a.h3vfq;g1s -50 V,1v;ng(vx. ha f 3puq0n to point B, where 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 acds 1ycz4m* l(ccelerated through an electric potential difference sy mz( 4c1l*dcof 500 V. What is 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 accoabo ns6n4wu, 0sm n-w2db42delerated through an electric potential difference of 500 V. mbbn2-nwa sd0ono,6du442 sw 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 through a potential difference of 1200 V. W kr9m82vfzrf8c.u )c ahat speed doesv92.8 ruam )8rf cfzkc 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 8 +8rwawviyp+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 is accelerated through a potential dife 8nj*5w6hl83qc m8nu-s ux3 occ2hsqference of 500 V. What is the 5h-nun823 ec6 shcuo3 j*cqx8 8wqmlsvelocity 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 carrie5tnh/++ps4ac j0k pfj s a charge of 20 mC. The object is accelerated from rest through a potential difference, and afterwardtfsca5 kjj+04h/p n p+ 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 electric ub - u7b-4z xae5ml4asw(cqo3al potential difference between two parallel metal plates separated by 1.0 mm. What is the electric field between the plateb(xq z 7wu-o al ma5344uc-esbs?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A uniform electric fcw/n 0 yelrmuar,1m 3)ield, with a magnitude 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 potr10,mewa u/l )nyc 3mrential 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 toward the eas hn xhieujoo 0v1j+2o st/owq:o)62hq(he+2et. If the voltage measured relative to ground he( j+xoh21hs6tqhvi)e+ o n2oqwu:2/ej o o0at a given 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;zutyty mp*( 9 field of magnitude 3.0 V/m m 9p;yt(*tuzy. What is the change 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 12-V bat5-chh7ja)(e*xuqyah tery. An electron releas)e5chx(a* 7haj uyqh -ed 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, seprx81:i3jd w7o o ,prc3bkrd)parated 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,xb1cd:83jr)pw3krpi 7d oro .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 connected to a 12-V bate;b nv 9nt 3kvpo,/;- ka2-ttd:ef,u d sfhgw7tery. An electron released from resttdspw-2t 9ohtk/af d ,guv ;-:bkn37fn,ee;v 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 eadc a .-w+jwa7lectric 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 aw+7cwa -j.ada 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 -r ,0acblglmc.8arg)f21*f qqcf 2skthe east. If the voltage measured relative to ground at a given point csqgm-,fb*c l01g)2 aq. 28f alkfcrr 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 potenti j1+ar7p ayu9 bv)kguf.m p0(mal difference of 12 V, it will acquire a kinetic energy (in the absence of friction) ofyr k1jg9vapu(am pu+f0 b.m7 )

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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 d cxng +p0alq dx5 93bh cy,4z,9g,cpkfistance 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 electri. + c5kj/l6pm,cjki thcal potential for the center of the meter stickc/tkj6,p+jcmlk hi . 5.

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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 misykzrjcu: 8uy 5/1nk7yr:6(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 at point (0,uy/7 6z:ryn8ry5csi kmk ju1 : 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 c(zfnf.t:e6g7 pkj6rc pu+m.d harge is at (3.0 m, 0). If the potential is taken to be zero at infinity, w pn gfp:zre7.k+ tcm( 6fju.d6hat 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, 0). If the pote n- 81dejak(vn- al4,wbuvfh3ntial is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from iwvn,aakn4l3he1d 8-j b -(fvunfinity 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 + liq2j.g ;eo2rimjpmr3t0m8 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 =qm m2ml r03ii+ .e;r2ogjp8tj 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 8 taq7hwlo8.b+4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the ab8 .tbhl8qo 7awsolute 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, mass 44,hr3iio 0bczq o )ib0kw+ dh$6.64 \times 10^{-27} \; kg$) 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 pl6 qbhckpsu7 :)gi:uy7 ace three charges, each of 2.0 mC, at the corners of an equilateral triangle of sidg6iu7s: b:y kc hu)7pqe 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 plat/xt 4, ;gxg.n9si cuh 86blwt4tfal 7ses of a 2.0-mF capacitor when it is charged to 100 V?l6fs/4snc tgt7;i,9w. x4tgbl 8xh au

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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 hb /f6- lrdnt ;:,kpv1muw ltm(as 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 capacitor is filled with air, and the plates ar(jecu)c k cq0n18ze .le separated by 0.050 mm. If the capacitance is 17.3 pF, what is the pkcnlcj0e z8u c1.)e( qlate 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 t*0syvgop3 kz y36ebm j 3*4s)iagb:xqp*i7 iplates 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.z pkiq,kut ()/ If the potential difference between the pla,q t k)iz(/upktes 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 acrosm+odx( :zfs, mlrxji;a55u een: ,r h.s a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dirz+afn,m xh(5m.ujxe r s,:loi 5:de;electric constant = 4.5). 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 plal8dnf0crnru)9ukp6.ftde,ix 6 55wiced on a 15 mF capacitor. How much energy is stored in the caprf 605in)95d6tw.e fuid ,k xr 8cplunacitor?

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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 an2qi 8 3m5po/ui3xdqp 15 mF capacitor. What is the energy stored in the capacitor i82opx3dq5 /im3npu q?

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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 stnor5a7a a. xuzwu b).y9v14 it is connected to a 12.0-Vyu)n v5wrabzao..9at 1 s4u x7 battery. 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 storekjk2k)wfs/7v vo-i/ 1jbpn4 x s $2.0 \times 10^{-3} \; J$ 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 capacitvjfa16sxlmeg*xlp 5) ,yb) 7uor 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 consists of plates of areazr81xyhg 4, ry $1.5 \times 10^{-4} \; m^{2}$ 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 consi(o1xext+zletu.1 s) nsts 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 capacitob ed vj j9z+s4,4qs;bgr 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 cap6,; o hkxpfnx6acitor is 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 to a 50-V battery and becomem+c ta j:co9wm5k ;mim4z6xy+s 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 t ;+ 6ic:k+xm49mt zw5cjo mmayhe 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 connec5.fw e88jn pz6 r1rcmzted to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the spac.6 zcpwz8 r je8mrn15fe 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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