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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 ; vpuprty8 *un;-9mkfnot 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 is azrfp0g.ftn(/8sbqu:6e fzboa a e4 1/

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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 surroundings. Object A +5dgk8qfkhg8has a net charge of excess electrons. Object B is grounded. Which object is at a higher potkg8k+5gqd f 8hential?

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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 electric 3r9rp6p-mss a 0tdv1;obp nnc::9 bk zfield

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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 inf to5/huq+9 v1(h okm lla. j3qck:w,u 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 gg. r;zb 5h4kcq5c yb2g68erlconducting 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 by a 500 7ro+wneje/o tgq . 6h,V potential dif./on e wrgjto6 h7+e,qference. 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 q)7v8bj;gzegb1ia1 tepa;c p4eq 2l) points are at 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 movboiixxz ,ocf(r 1anv)h ghr 5v,a-+0;ed from point A to point B along an equipotential surface v;rg(of1 0ibavi a-5n+o h,x, zxc)hr.

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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 bc m/(innn8px3e

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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 parti 5pd:6zt vpso.p00x71bs2 f*xs-izkze q- fgmcle carrying a charge equal to that on the electron as a result of moving through a potential differenq.t z d1ipmbp:k7s-sog 52e * zx0z-6f0xp fsvce 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 unitybt ,u0, u6cn ns)-eja 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 correy bczg)-dw gjl 88o.z9)ws-gp sponds 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 positive point c9h1sayras o)5harge is 10s 9o5y)1ahas r0 V. 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 b:xvv sn): .gxa negative point charge is -100 ns.v x v:x:bg)V. What is the absolute 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 exact center of a 4o u ypzo;m2s uif6e) zjw1o8-square is 3.0 V when a charge of foj-1 e zoi;pm o8uyw4 u2z6)s+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 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:ih8yf grcd2q m q(+ w)a2vad, center of a square is 3.0 V when a charge of +Q is located at o v+a( ,ryh8 )qd:dfcwm2ia2qgne 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 of6v8 15ggrghj; n;wmezt 7y*sc 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 ii:;jz ghueqfag14 2:u s 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 w0 so2 ma(s r-jvez2.devery respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capaci(d2w0 v2oj s -zrem.satance

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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 capacitancf.l7eu r2jffhz (o5; pe of C. If the area of the plates is doubled and the distance pfu2 (fh. 5lj7;e forzbetween 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 is7 6pgo:lrv:sv removed. The plates are immed6 vpg7s :vl:oriately 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 web :vzo*3-2zk spiab k*akened, the capacitanob k kvp *ba32s:ziz*-ce 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 parallel-plate capacitor 3b*py4c6 w nnl0fe ub+j,:a jzare maintained with constant voltage by a battery as they are pulled, bpbnjw6e nucyl430z+af*j: 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 are maintained with constaihsphs5;62 vm nt voltage by api6 s5;2 shmvh battery as they are 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 addbaqv2ylepbm6u8 7k+ :ing a dielectric material between the plates of a capqk8m7a :uvbpl+6b2 ye acitor.
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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 of a capacitowgd o1ci :gqb1dhk.(:fx7t -qs)f4 h hr. Wh1h)khggt fxb.4:wo( 7dcfhs qd:qi1- at 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 thq0zu:3 j7cileq: jn +rf3u;oke plates of a capacitor holding a fixed charge. What happens to the electric field between the plj3 n:;:zr37ouqfj l ceiq+0ukates?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacivy e:qy a 25z,ut5v3lator is connected to a battery and becomes fully charged. The capacitor is then disconnected, a 2yvlqz,a v: eu5y3t5and 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 capacitor holding a constant charge cau8aatqvp ;zu8 dk88( vases the energy stored in thatt k a(va8qzudp 8av88; 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 given capacit)pjjcm)aj,r5it:i)ucko-. tor causes the energy stored in that capacitori)k jc: -)atrm pu) .,5tjicjo 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 Bd.n m+v ;:h1hpz8i7l5uwgvan*,y p(a5z hepe. What is the potential difference between pep+( a h 8e.yv75gh ;w,5n1iz:dnl *phvu ampzoints 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 cv,ao x;)bw:vfq*qgm9 dyo4p as*7ojr. i z4)is -50 V, to point B, w wom)*oo,*fcizqq4gxpv: br j sa y4 )v.d;79ahere 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 potential dikx5 +jo1xs +e xyz 2*cpc8as.pfference of 500 V. What is the kin epx x5poacss12 kcj*x8y+z. +etic 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 a,t z7 , (go+vwk55p rsxwmi6otccelerated through an electric potential difference of 500 ,s6t ,wtgpxvo5k(z75ro i+ wmV. 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 di 2n9nsea i-saf,6/9mv ukf* ukt*lbf0fference of 1200 V. What speed does it ms u ka ,s69b*uv2n*f 0e9f-lkfatn/iacquire?

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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 iss- )6) * wlzgqvh:njtv1h j5n.g2y jnn 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 acceleratedahj 65k:.1+-4c jeeggg zz-/q djy erv through a potential difference of 500 V. What is the velocity of the electron a4cjdg.6z5ee q/kgy j1ajh er-gz v +-:fterward?

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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 c,mfqt mk icq c:.t o18s-9vlc0harge of 20 mC. The object is accelerated from rest through a potential difference, and aftect0fvi9- tl.c1k s:q,m cqm8o rward 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 difqt69j a+lc/zq:s4aq9 ; pe 4ivpd vj4gference between two parallel mpt a;/valqj4 j 9q9e g+z6p4:4iqsdvcetal 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 fiell nu+0 bwk,mf5d, with a magnitude of 500 V/m, is directed parallel to the +x axis. If thmw5 ukl +fb,0ne 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 electric fyn8(ttqq:x (p ield 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 directly west of that pointnx ptq 8:y(tq(?

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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 thee. bj9l)q:1 slc,sbk, uoj5o v direction of an electric field of magnitude 3.0 V/m. What is the change in kinetic ener9 5c 1:k,lsvjo., lsj que)bobgy 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 battery. An ev 03xz u2godg-lectron released from rest at a loc0vo -xug3dzg2 ation 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 coekvh ue(7g*wdud at,s8 9b8* ele: fj8nnected to a 12-V battery. An electron released from rest at a location 0.10 m fro*ge 8add:ehe t 897vju,(8*slfw e ukbm 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, separate- dch1mu-)8s h*gbzbxwe,3onfc 8(m nd by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the nuhfg*h)czd88n-cos1 (me -bw3b nx,megative 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 electric field of 50 N/C directed toward the east. If thkk8 y 4kkw new005ulnuea5bh0;c . aq)e voltage measured relative to ground at a given point in the field is 80 V, what is the voltage at a poina 0cnuey5 w 84leh 5q b.k0ukw0)kan;kt 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 east. Ifp2u.7.n*q :wtf acwp v(h sw8n the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage at a point w uahtv .2s pqf (:7nwc*wnp8.1.0 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, it will am/y/6 y0mo ky6f*bk-nsmy8pucquire a kinetic enermfobu*/ /ypms-y m6n08 ky yk6gy (in 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 i r5wd-/k xkk(at a distance 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 ahloq)x)(y(vt h,w p6 ;oi:q7ogmz.ac meter stick. Find the electrical potential for the center of.gp 6lmh( :x ( chqovaiyozq t);),ow7 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,r*hbo/f gtn :660c.mje 7 puz;cn.gyk 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 tf.* hn0e;:.obmc/y7r6ng kt gc 6 uzpjhe electric 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) and a -2.0-nC charge is8e wtqtfg9 d ugu(e5j*45kg7v at (3.0 m, 0). If the potential is taken to be zerjgufug* 5td 84kw 9veg7q(e 5to 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 isun.1tjk 2;bjl at (3.0 m, 0). If the potential is taken to be zero at infinity, whj 1 kuj.t2l;bnat 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 areoed 9re9dunj x ;22bq* placed at the corners of a rectangle of sides a and b. What is the po b qoj 2*ud9eedx9n2r;tential 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 debjmd*vsggv4y1f6r *0m.6le iagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 601mm.sjlye 6r4bgfv* v ge* dmC. 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 +2eo 2 eevsmohy(o64ie. 4, 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 i)ub, cm 0nuq*to place three charges, each of 2.0 mC, at the corners of an equilateral triangle,bu iqn0*c m)u 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-fcr2,p s cn+u8mF capacitor when it is charged to 100 Vnr8 us+, cc2fp?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capaculjo jmh m2 m/)5n sg5s1+;hwuitor 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 capacitor is filled with air, ab.v*hte:/41j0if4* )womx w jaskvy-0o momz nd the plates are separated by 0.050 mm. If the capw/o4zv*w j) m1f-jveis mm0bax:4yk o.ot*h 0acitance 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 pl o8 ib+/fv/a wmdswp3bc0n 77nates 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 5.0ijcgjkp3 4z 67 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher po jc7g3ikj6z 4ptential, 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 bat(yvb cws308j gtery. After the battery fully charges the capacitor, the capacitor is immersed in transfov c(ygjb8s w03rmer oil (dielectric 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 placed on a 15 mF capacitor. How much energy is sto*bz/hm4 aik; kred in the cap4* ;ikbmzk ha/acitor?

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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 8lw38vwkte:mul k*0t oqbc*r8m/z* da 15 mF capacitor. What is the energy stored in the capacitmm*e8 okdub8:k*r cltw8 0 q*z/ tvw3lor?

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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 ont8w+zwvvgqi/y ubx5 o10wvcxs0 9;fru,;n:z o o the plates of a capacitor when it is connected to a 12.0-V battery. How much work was don;c,nv10wo5 q0b 8oig v:;9w z +fuxrxv ys/wzue 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 isa fgvoyueam064s1r 9, charged 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 consu9p4sz8wcn 7 g8q6vq dists 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 o::ajl7 t-y eyym; c1gy/ sf2/owv3lfff 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 plasw gc2/1e5vwanqyg 60r 52dfmji70zg tes 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 y7g fv+jtpl)0of $0.40 \; m^{2}$ 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 co7l wtj21zjrssfe4fhke6( ; b 6nstructed 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 becomesk3, j5s-1 kd :swpy ad*be1nwz fully charged. The battery is removed and a slab of dielectric that complpw zj5:-d 3bn1ka1 skdw,sy*eetely 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 * v * tqj7hvm7xcwnu42to 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 dc*nvvuj q2w7t4 7 *mxhielectric 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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