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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 isv1k e o1 f92jh4mmcck8 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 i cob(9ley f++cs 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 surroundings+8oie.hd9p :kjvbhq* . Object A has a net charge of excess ej:*d8 o q9bhev+p.h iklectrons. 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 electric f6llto ur/c v1 hyzyk: ;c6wh(7ield

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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 direction opposite to the electric fielimp- )1 is t21 uxk-h6eu cxj3*sw/zjod

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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 o9xl:a c,ir 7uksbz.a 9n a hollow 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 from ol* x)oxey 2buz78z34wm wis* rest to a speed v by a 500 V potential difference. If the potential differenibosl78 2 *3*emwx) ouzzxw y4ce 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 sammch+s-t7wem)9y b7jx. 2i;ww;o xdb re 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 along aq l(qih4h; bte+/,nu1agq b a2n equipotential surfac q;aqg bhn2ua/ q4h1(e+ibl,te.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface l*d ej0q8p 4( gw3oxsrmust 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 equal to that on thnm6mvy74 x0i wqy) 6w.3uunzhlt dy) /e electron as a result of movinxm.n 34lzmiyy7yuh 6t q6ndv uw) /)w0g 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 un1dtfcl/l)3 hcit 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 corre j*t5*ze3 iymbsponds 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 a/,(sv wq xvl hqp.kt);.(k.*wfh hotxt a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4..lts;whfkqw .( ,pk*oh.) vx(/v hx qt0 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 point ts1g34f 28e,ggtp .sfwop oo:zo.xm /charge is -100 V. What is the absolute powf/gf3z8p,.p.t:ox g m12 4ose og osttential 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 iecxvn). c8oj4s4v6a9kn 7so 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 co e4sisv9j4xa k6 c8nv.n)o7c orners 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 of +Qw9frk5e3(r 5owba2 r b is located at one of the square's corners. What is the absolutefrrob5 wk9 r e3aw5b(2 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 bjz t22ewk4 x6ee. r)u4bjz3ythat 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 ime1wlw22bb w0 92ivp d4w.k-f7 qclobgq**z xs 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 every respect e/umiqg e+.) jgxcept that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capacitanc )j+emg /q.iuge

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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 are6bwg p+hk vhp108 )1yugd*mrla of the plates is doubled and the distance between the plates is halved, what is 8 )+p1ld 0*gwgbr 61hpumkyv hthe 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 remove ztwqw,-tc,d31e /ixbd. The plates are immediately pulled apart. (With the batt31t d,ww-t b ei,qc/zxery 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, the ;;pww m,pokoe/hk0g5:y 1 9ztnyld-q capacitance of that w op;k-mwy,/oyphtg kzl1d9q:;0e5ncapacitor

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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 osis6gc3w-pe 4b56 : p md:lnwt l;:mmwith constant voltage by a battery as they are pulled apart. During this process, the amount of charge on ;b5in3l:4m :mco6pp:g 6 s -dwestlwm 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 capacitoap59h f4zj -z;-m ,y/buybtd ok kf7o9r are maintained with constant voltage by a battbzh 9-f d;m tyy- kkpoaj9fu/54o,7 bzery 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 adding a dielectric material between the n:btusu9 3j+)q k78owkk6tgrplates of a capacit9 qg jk)u:7nk 8rt+3ubts6okwor.
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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 (p6: +jfk ka9pr ,qlucz;)4cshvit*b a capacitor. What h9crl* bcuhp;(p)z qv :kf+ st,64jai kappens 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 of a capf4 p:ai6- wcym+ziv4yacitor hf i +44wv:mpiyczya6-olding a fixed charge. What happens 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 t+guwnuivt ) v1jxw/b:.3xz (connected to a battery and becomes fully charged. The capacitor 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 capacitwuiz 3/x u)jw.1tb:+tn vv(xgor 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 causes the e /on hw-lcst4)90 snzb0mjw6f nergy stored cs6z-s/mwtnj09 w0bn ohf 4 )lin 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 across a givark/u4- nk* cqen capacitor causes the energy stored in that capacitor4a /q ru*cnk-k 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 cha m0 ij.ys8r2mgrge from point A to point B. What is the potential differenc2 0 mrg8mjyi.se 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 electront0hr3lvn, ef 4 from point A, where the potential is -50 V,0rfn34 ,lh vet 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 accelerated through an e1m y4p m.)m8hanfm2niar* ds8lectric potential difference of 528mi8.ahadsnmmy1rp *n4) fm 00 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 accele 8 ddon1ss;(e,6t dcfmrated through an electric potential difference of 500 V. What is the f(6ndec8 tddo1m,ss; 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 ps;j2z(jz tn1 4nj3 ckrotential difference of 1200 V. What speed does ic 3 rztkjn142(j;s jznt 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. uxt(sz) sv+dupca 4)/0 V do 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 acb6-oh0en x- c8dn:emccelerated through a potential difference of 500 V. Whadm8noh-exn-ec :0 cb6t is 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. The object is accelerated from r:137b lkhis.(lt xtb 9 ojb30u-zwii hest through a potential difference, and afterward the ball is mo7-iu 3l :hzw3h1ki itl(s9 bbx.job0tving 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 electrhpg2la , ao4w-ical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric field 2g ,waph4-al obetween 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 direct+,xf-)tr urwi ed parallel to the +x axis. If the pot-ri u)r+xfw ,tential 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 field of 50 N/C directed towa 1 io.x2k1/+ moqheqfurd the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point + iqfoexohm1 2u1/ kq.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 ht 6te. khkdekj,8 21fc-p,ceof magnitude 3.0 V/m. What is the change in kinetijpke ft6,21ek-kdteh8.ch, c c 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, s0n)uh m0okvi.9d7-kg7 n 1mkqt bqdi9eparated by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negativ970 iitk9vdgo)0unk .qq-1 n bhd kmm7e 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. lnl9si+qi rcx,k: :w* An electron released from l:i sc: wk9 *q+lnrx,irest 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 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,)e sl0:((ttjp pyze 1g 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 plate. When the electron arrivp0e(t)jyse:plg tz( 1es 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 thvqo 2aw,b*0z z,fn q5fe voltage measured rezn ,bzv*05 a ,2qqwofflative 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 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/nu;d yog*3 1aggz2sm/C directed toward the east. If the voltage measured relative to ground at a given3oy mu;1g2 ad*zggsn/ 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 thr 0cm a764e-j nxh(cdjbough a potential difference of 12 V, it will acquire a kinetic energy (in the absence o6-xjm4da7(ch 0cnj be f 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(+;nwk/it yla tb s4 9cv0qt4h 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 a meter stick. Find the electrical po w ldt41tf ugh(:ncwh0+b3p1 ftential for thep1cwf:hfbntlhd 1gt+ u4 w3(0 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 -2.0-nC charge is at (3.0 m, 0). Itx/4nbyg1 d. ojr+0n zf the potential is taken toon1x /gt4jb ndr0yz+. be zero at infinity, what is the 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 is at (3.0 m, 0). If the p0dwh;a,4peu :zg / r7r0wq6aqogba d9otential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0, 4.0 mqd ar:owa a;d0zq,4g p 9eb7/ r6wuh0g)?

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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,h0yw:vw :;g em 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 h;wwevm:0:gy 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 are placed at the corners of a rectangle soo/ aqh/g 5a xw,z79qi1 k;dh-7abyc of sides a and b. What is the potential at the center of the reaihs75ay wk b;zo ahdc/-oq ,g x7q/91ctangle 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 +ulp- (5prhwe 44.0 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 absolutep 4(r h5uw-ple 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, masbc 4gohsb7 0c-s 2;bhw-1sof ks $6.64 \times 10^{-27} \; kg$) 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 charges, each of 2.0 mC, at;. rfy0j5dy0yv5sso h the corne.ryh0ys50d vysf jo5 ;rs 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 a 2.0-zpyiot36lyysbwzj.n 1 g 91tt4 /90mpmF capacitor when it is charged to 100 V t4/btml3.i 6 9pp10 1wyt jgsoyzy9zn?

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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 of a,1 b0)b7elffu;p dmklrea $0.50 \; m^{2}$ 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 aiq:j,zyoxu x ;5*4x gzxr, and the plates are separated by 0.050 mm. If the capacitance is 17 x; ouy,4 zxq*zjg:x5x.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 plates o 0;uybo d 6dc5n4vkxi/k(v8 zof 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. Ir7 (7h ex+atksf the potential difference between the plates is 2000 V, with the top plate at the higher potential, what (+ kahe s7tr7xis 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 42qz 8kj +jaqp100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (d2 k+q4jjzqa p8ielectric 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. v r r:aynz;1w8d qbj93 How much energy is stored in the caw;aj1 ybn9q3d8rz :vrpacitor?

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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 stv*nvc i1 i)2.weski-fored in the capaci2ev.v *wi-n1 iksc)f itor?

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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 it is connected 8d*u ax*f qp.f2*xo7ojve x 1ito a 12.0-V battery. How much work was done in*i.q7vj 8xox1ax uf*fdo ep2* 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 chaii7 ej..3ywsvrged 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 capacidki ko3sr :0j;o1:,q)we njn ay mh;-ctor 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 capac*-dbh 7o2xtisitor 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 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:i2byz xr(,d7/u fdyd 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 capacitor is constructed with plate areargjds+*u, ve. k y5 cu*l1bho+ 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 -i r4u9qcvt g 2m3qf1jj5uhlsd28ao0 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 becomes f8ke*ni cbi/s n7e0ajn 4t. wo5ully charged. The battery is removed and a slab of dielectric that compbsni4en*in e to.ck8/75aj w0letely 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 to a 50-V battery and becomes fully .+zrqf,jlb j-1mfo sc+ u+7w bcharged. The battery is removed and a slab of dielectric that cbj+ujqw. + o1rz7+bf- mcs,lfompletely 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 inserted?

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