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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://autodiscover.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://autodiscover.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 not a vectorumq8:r yv f68(cy0m kddmu1 cqh21 y2c?

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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 q2yz0y,3w wc/uqv 1bvs 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. Objeke8olj-w p1z 8ct A has a net charge of excess electrons. Object B isp8 lwk1 8oe-zj 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 elecw)qc9 z 9ptb46lwlo e2tric 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 l 2ej8xwn, a:pa 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 7bqdxth+q4x7ollow 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 rest to 4ydhtt7mdnb0u si+ -2 a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new speed of thetd0 2s i4hbum +7dtny- 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 al oi)gxelg7g , *1qgbc)l 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 moved from point A to point B flh; ;h3gkwu:along an equipotential surface:h; 3luf;khwg .

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mustck10/8gj ) +mm4vacyqyb6 mjk 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 k)mwei4 yltmm6+w ax; 4k6x z4a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one 6 z6 kx4y; xwmmk4i e+l4)mawtvolt 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)g8gvft6,lp:6 uscsbzrsownk ;ft; d39:iy ( 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 corresponds 58dg jkt/8(vu(qv cobto

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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 p gdz: d)q/dt*ik/sm(t oint charge is 100 V. What is the absolute potential 4.0 m away) isg*td/ qd(mk zt:/d 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 distv,h; mcj*u2o -gndy7zance of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same pogozuhvn cd7;-jmy*, 2int 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.a,mm30z5z wnha;lo1o kf r-,l 0 V when a charge of +Q is located at one of the square's corners. What is the absolute plhn f,o0; 3 5k-l,wrmaom1azzotential 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 ty:3x t )r-c1r 9lnzntV when a charge of +Q is located at one of the square's ccrn9:1t)nx-tzrt l y 3orners. 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 consistf v m)nk8n+ )cpj,5sef of 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 arh/4-ta0fcp y

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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 that one hasza z vlv90:b v1/kcc2m twice the plal : 2m/vvcz cbv09a1kzte 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 capacitanced ; rqe i4d70.d2r,q)zmwcmz e of C. If the area of the plates is doubled and the distance between the plates is halved, what is the new cd0;d)c qmzqr,4ez7.2 d erwimapacitance?

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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 removed. Theg7.nnk 6h5pyqkluc) 1 plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) Wh6 .ul 1hnpncy5kgq )7kat 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 c;sw qe-x3t6 xfapacitor is weakened, the capaxqw ; 63esxft-citance 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 cop/1nqx /d 1buznstant voltage by a battery as they are pulled p1 dxqu1/ bzn/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 maintainedlr pfw/nv14bwvae6r tu 7:k*6 with constant voltage by a battery as they are pulled apart. What happens to the strength tr vf* k4 ru6/vp nw61l7:weabof 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 bedwp8xg1u7j ;rnx 7z9l tween the plates of a capa78 x wnld9r ;j17zpxugcitor.
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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 capst)n9 qs6zo4 cd:lpj* acitor. What h4pl6o dzsscn)q 9:jt*appens 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 o h6badrzx5wm7 .fqcs. 2rv;c3f a capacitor holding a fixed charge. What happens to the electric field betwc h.cd6 m 3b27ar .xrs5fzv;qween 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 tou ;g)ikodxk08 a battery and becomes fully charged. The capacitor is then disconnecte8ui kxog)d0;kd, 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 a2cl5u+ib* 88 ubh3batv qec lfv7ky64 capacitor holding a constant charge causes the energy stored *ibkfu3lb q7v4e2cvb+5 8a chut8ly6in 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 given capacitor causes the energy stored in that q31oob5t o6 e;/f3jyol9 nm) ewlp7ujfh q- 7wcae ulfth 75jb1 -;3mo w6oj9owfl7 n3ey/ )oqpqpacitor 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 movezfn6ztyd;tb.qut2vw d+u ok p6,ny-i 0+h7. g 10 C of charge from point A to point B. What is the potential differenc.oi bytz6.t,vd7wnn u+y6zp g d-2+0fuhtk;q e 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 electron from point A, where l8a nyg)3mo7-y4pa pathe potential is -50 V, to point B, where the potential is + ny)p oa47m3gl 8aa-yp50 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 achx-y9-c-d utifpt vva(.k(.i celerated through an electric potential difference of 500 Vp yv -fkv9-t.xaiduc t (h(i-.. 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 accelerated through an electric potential diffpb-v /wt:-g kxa5bb:w erence of 500 V. What is the speed of :bwkbp-bx/-:vw t a g5the 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. ybo;d m9c;uky0na a.2What speed does it2yaao d 0yck9;;bum .n 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 0:(nx syxx+gyiehv xz1ub)zlj(r,3 ; 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 accelerated through a potential difference of 500 V. Wz08clt,l5y a lhat is the velocity of the electroy5z8 lta,lc0ln 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 rest thcz*ij1rsdpm15+ ha/; zk0 vwxrocrmi1+*01/vajw shpz z dxk;5ugh 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 ezp/a k,c4zntd x2* ze,lectrical potential difference between two parallel metal plates separated by 1.0 mm. What i2 p/xdkz c4z*ae, nz,ts 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 V/m, i ph )qq3sf4d8kpg+k9 ws directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the popg9d8q p +fwk4skq3h) tential 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;j3ghfjh e:npu1 c60w directed toward the east. If the voltage measured relative to ground at a j0whfn:c jp;u61ge 3hgiven 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 th j. -+ynmhfnh:e direction of an electric field of magnitude 3.0 V/m. What is the :nhfmj ny-+. hchange 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 col37bg-peih 8 ynnected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron ag pl ye-3i8hb7rrives 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 connecb m x20a7yq3bated 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 distanab0qb72y ax 3mce 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 a2,p31ktrsx: ickymm+m q84bu x yru s3i5pz,8 12-V battery. An electron released from rest at a locatio1bsxmy 2ux:4sy ip8m8 q3+tu,53krmz ,rpikc n 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 electric field of 50 Naf9dtw2qsj+pgh o6cz9uo 8e: a0, )i b/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 a point 1.0 m directly east of the twps 9giz2q) ob,uhf 86e+ a:jc9od0apoint?

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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 h72rxt ;3x4nntu wc2v8b cqa;of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field i brc 3;7hqtt; n8xcv4au22nwxs 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 12hs6j rn+,np a.n(3nsx V, it will acquire a kinetic energy (in the absence of friction) n+n3n.s p6, an (xhjrsof

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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 distanc i +y0whr.) sqho9u7c/ucx(hme 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 sthfi*gqv8 aaw6 1jcw+1ick. Find the electrical potential for the a 8agih*+w1 1 vcfjwq6center 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.,wz(afuh nl+) 0 m, 0). If the potential is taken to be zero at infinity, what is thl + f)ah(uwz,ne 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). emvu,gv29 luuik;qea1k 2a 4- If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0, 4.0 m)9e e ; k4m1,a qu2gvaukui-2vl?

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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 charfp7;yq2z,wz hmi5(dq2 w;ab d ge is at (3.0 m, 0). If the potential is taken to be zero at infinity, whatf ,y (2wa 2qdz;;7wp5miqzd hb 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 uk,ca /hde3f /*t/4ikj3y zck are placed at the corners of a rectangle of sides a and b. What is the potential at the cy e,ij4kk/3hdf /kczt* u/ac3enter 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 onkxr )/ tmoxc;* a 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 potential in the square's cet;xro /c xm)k*nter?

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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 j-a2 2z szv-v b:.nned+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 three charges, each o ;oxvtz00gz x)-xo1yhf-ad0v f 2.0 mC, at the corners of an exvy oz-g vfxd0x1o 0;z-at0)hquilateral 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 it is cfle3p zdt*+*oharged to 100 V?f*o3etdz *pl +

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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 plaseay6 a 4d0qhuq4zr +44s.vlo tes 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 fill 0 jrde7m eh1 04kncp:.k4lggeydig.*ed with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, whay0knmg *:ed rig1.glkpdch e7.j40 e4t 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 capac,j/w otb8xta 5,8i ;bltbmwm.itor 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 separation icbzik10a h3t9 vdz*3of 5.0 cm. If the potential difference between the plates is 2000 V, with the top phi *c 031zd3btv9iaz klate 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 batt) hl 5gxb(zj-kery 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 connel g 5-xbz)(kjhcted 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 x/zjc xu(pr ln) 5ki+5zr-gv3 on a 15 mF capacitor. How much energy is stored in the capaccj n 5v()u/i plr+rxgz5kzx 3-itor?

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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 ca ;kcv 3s:2mfhbpacitor. What is the energy stored in the capacif2 m3bkhvc:;s tor?

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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 conz t5l7ugz)e8 gnected to a 12.0-V battery. How much work was done in charging thiszz57 8gge tlu) 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 isd(x4pqk,z 9yn l7usc 7u kv5:t 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 consid)5re./mf1d8o om gydgi+hjc km*w4-sts 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 cy( 0a(02,e ca yu jys-f1rymw5ua+vpfonsists 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 t ctthup3.6:a+ i ic0p*wjj3 wof 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 constmmb+/ mw elv ,p(y 8tr6qo)dqd lui9ui/)qv ;)ructed 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 constructed with plate area of d(ftdchu8z x4f, ,e hb 5q.tb;$0.40 \; m^{2}$ 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 char dx3bgdm2 ju88m,+lc r*7zzj)k uv,lrged. The battery is removed and a slab of dielectric that completely filu3jl, mcr) m vjzl8udz*x8gkbr+7 2,d ls 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 connectedo e (cm94-m2zygko3 yc wi5kr2 to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the - r2we(4o zi kccoygm23mky59space 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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