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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.5edu.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.5edu.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: admin  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 nulz.b5 cc,k5a 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 9b jn5ct40 bcja

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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. Ob6vx vn4ry(c9 hject A has a net charge of exce4xn9 ycv(vr6hss 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 electricme5u-n vh 0m.t 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 moving in a direction o iowja 09:dti0pposite 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 p.eg*qd r*7yx3snz 1jplaced on 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 accelerz o4,7jfhq* (gq emn1l/3 sqsx2av 7jdated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, wha1j/gdfm(sl7, 7hqe 2qa zo3*js 4xvnqt 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 potents v3 xeztpd)+9s.k.ns ial 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 ao+hzht;a a (v2z aj1bq*.ot/qlong an equipotential surfacabt;(az. t 1qho*h2vz/ qjo a+e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface qlw :r-bk 17e:4:t5 - wz0buraba itoimust 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 that79 giddz3t;ri on the electron as a result of moving through a potential difizt3 d gd9ir7;ference 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 unig3 ex r.equ91st 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 corre0+77a l/ndlifb +xd b;vt 7tndsponds 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 pointfl-(ylhw m0v 6xzgks;o f 982o charge is 100 V. What is the absolute potential 4.0 m away from the same pointv s-ym(g6olh8;wk z9lf02 fx o 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 cha1adnj7v xl1-y rge is -100 V. What is the absolute potential 4.0 m away from thendl ax711v- jy 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 1 /o(regmqf 1(a 7/(k9*q3aaxe/zibloygpw h charge of +Q is located at one of the square's cornerfbg1oaae/*gzqhk 71ae o m (i3lp/(rx w/ q(9ys. 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 center of a square is 3./hhqz7cifv nj/r+k +( 0 V when a charge of +Q is locat h+if/7/ ch(knrvqj +zed 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 o;8+pwzw *+nn3 oqoc8jnyky e6f 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 is aq0(x;fko .rr 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 except tha*e3d,d9q 5dxslk,*si(lr:fe20i 6smax k nbst one has twice d 2kedx * fns9ak3(ie,s:di l65xlbr *m,sqs0the plate area of the other. If the smaller 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 capacitance of C. If the e +37c0m9vwx;pr xpq :rm,mqearea of the plates is doubled and the distance between the plates is halved, what is the new capacita0 cwprqq7x m,v e;m+xe9:pr m3nce?

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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 xt)fbm1 i-a c6and then is removed. The plates are immediately pulled apart. (With tht)b-fa6m 1ixc e 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, thb 6. hozbg6 vmsx;78wce capacitanccgwvxb 6hob m8s6z ;.7e 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 are maintained with constant voltag;7bkrx inh - r8:nd.bqe by a battery as they are pulled apart. During this process, the amount of charge on the plat8i n:kb ;bnrd-.rhxq7 es 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 mai 1w muixru 7,;wshxi;;ntained with constant voltage by a batteryi xiu7 ;suwh;r1;, wmx 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 dicxou/o7cvw 451dme a:electric material between the plates of a capacit5vcuc4ed o7 1:/waomx or.
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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 platespck:h0mw, 3e;a vfq y8 of a capacitor. What happens to ta 3 ;vqw p,8y:chkmef0he 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 papeay(bhgh0the - 3 /b1 vv+xjq:qr is placed between the plates of a capacitor holding a fixed charge. Wh1g/ba bx0q jvq:th3( veh+y-h at 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 ispen*t y46y(is connected to a battery and becomes fully charged. The capys*4epy6 t (niacitor 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 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 causes the e)tai** zx) gntj,h:benergy stored intiah:* gb)j *x zn)e,t 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 acrod c2ky.sa+iq46f6)geb0 bkl*x 0b ekvss a given capacitor causes the energy stored in that c2.yee*d)kg +fcv04l xkbbi 0sq6a6 kbapacitor 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 p46 k-n0p 673 ixm0zbegdwmkxfh1o; jA to point B. What is the potential0 7h3m0-k iden6 4xo ;pmpb6fwgxjkz1 difference 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 elg r*klz yyl /d.k8fg wh7h:q/)ectron from point A, where the potential is -50 V, to point B, where the potential is +50 V, isgy. gq:8kl/h )k/hzwr*7fy ld

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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 elect(k8l ne 4e-pzrv7yo5sric potential difference of 500 V. What is to8ez yr7sv(pl- ken45he 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 3g: gumx6vt l8 irrw,,difference of 500 V. What i,gm8,xtvrw ug 3i6lr: s 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 potextg* z,js7 5g8e4acht ntial difference of 1200 V. What speedtz4h5*c txsj g g,e78a 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 i-6hb x8l9g ruae )u5jmz1i5wd n 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 difference of 500 Vbn) ghev ))1s(y)3h4hsw ty hr. What is the velocity of the el bh3)(nh4h e)yt) hy1)vrsgwsectron 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. T7z ra 1p yrezo6q; lsv (b9wdb(5y9tv6he object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of tz7w ;5(vs 6o9 yt6ar qpr1bbvd(yz9e lhe 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 d1q rzzup7qvrz+u yx8;m np7tl. 1 59mdifference between two parallel metal plates separated by 1.zzy1qnz8xu 5 ;urrpm19dv.7 l+pq7t m0 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, wit g*4 v,fbsv7lw8r/w ndd,, ozth a magnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 25o,vwblw,d48,7gdv /r*szt nf 00 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/Crumdmr8zpk :)w o6h:7 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 rm :hmp8o) zwu76k:dr 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 fie,ooaixyr.n32i+ yxe3ld of magnitude 3.0 V/m. Whxe o2 ,3i.+rx a3nyoiyat 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-r p4sj4zwp;d connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. Whj4 -sp pw;4zrden 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 1p9 (aynhuu ;e:+(rjg y b,szcelectron released from rest at a location 0.10 m from the n1 uyg9pbj,a+((zu rn :h;ecs yegative 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 connected to a 12-V gio6 a3 sghq+7battery. 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 i+6q h 7o3gsgathe 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 dirrz/sz.l(lm/*9oq wfb ected toward the east. If the volqbm9l z.s*zo(wf r//ltage 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 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 fielw+n f(6u5uy cqd of 50 N/C directed toward the east. If the voltage measured reyq(+fn6 uu5 wclative 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,25u 5q: r 6pwawjvc7rx it will acquire a kinetic energy (in taxq5 ruw 6 :5wcpr7v2jhe 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 d7i;u 4n w,on 9ifya6dgw 0jl9aistance 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 ahkgve,mk:*-. 8 1 ;ugcxt*z f insli6ore at the ends of a meter stick. Find the electrical potential for the center of the meter stickinfco;6*eg g:* itm 1.zuslx8h,kkv- .

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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.x t8/;uyu)aq: qluk .u0 m, 0). If the potential is taken to;)utlq xua8u: yuq./k 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, q780p.9 )aw6ysaspzr y mb0zh 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 energy of a 1.0-nC charge atq7szsrm9wyba0 .p) 8 y6p0ahz 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 charjc 7d+we2*j*8 6e /kch4b wfh lyzbp1cge is 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 ch +1ew zcfc48c76yhj wj*d/hk*le bpb2arge 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 ch3i ggfev,sr0(arge +q are placed at the corners of a rectangle of sides a and b. What e0vgs(r3if,g is the potential 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 8 cski9*0b.d vt:xfgca side. Charges of +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 absolute potv xfdk9 si8b:g.ct*0cential 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 (chags0j h+89btlo a/a en)rge +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 to7yui, lq:b*xy x +(zsj place three charges, each of 2.0 mC, at the corners of an equilateral triangle of si ljb +yxsu7,izq *y:x(de 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-mFi a;gk6ff47qp capacitor when it is charged to 107; p 64qakffgi0 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 has2a*f;wllojrq6iw45 d+f g,k b 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 plate9gva 2dncu) pxo(r0;hs are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plc v;xuar n 209ph(god)ate 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 platw2y -;q qhqgwbmu );sm hb3q,wl3o f-1es 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 separati4qy4fg; 9se cmon of 5.0 cm. If the potential difference between the plates is 2000 V, with9 fcg4ey;mq4s 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 100ej* y+7xt -/5 ud)de8ar2tsghrmuhm 4-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remae t-ahj4h/x72ut su *mm8dregd+y5 )r ined 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 ener 5vutec9722e(y7c1wsf ozz vaa: ,/npy.lxqsgy is stored in 1: szf y(9 vv2ec l.tpa,o ws/7q5ycuane2z7 xthe 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 the cap31l5 ewga eycr8-ly*tacitog*e-8a1ew53l yyt rlc r?

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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 flowu 2plw4nob t us/du6(3 (xdni:s onto the plates of a capacitor when it is connected to a 12.0-V battery. Howw(inu3o bn/6td( : dpuusx42l 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 it1wa2ph aoblv k qz.21 cd4a57k 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 capa/mw 13mx(9n 6jg8 cus6xt xtsdcitor 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 yy*1x a no2to(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 plates of yne61 dfzs;.f 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 capacioxh4yi9b f o3mx) ij6z*g1q -rtor 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 capacitor is construc pw.9l aw4hp.eted 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 fully charged. Th8 m pgvtxqiv.hzarp4c1 1p9/o);;hk a e 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 capacitance of the capacitor after the 14a v iqr;p;)cp8kzvx map / og91h.htslab 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 ful;o +f0nbugk*clt05wt ly charged. The battery is removed ; ut 5olk *tb0+cgnwf0and 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 inserted?

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