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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 ntg9h7 6u98 v4ymq .ith3hm gjkot 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 a, n6olktc9ic ;

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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 s 1c 0fg fzws qbdcjwez-.905 owp,c)s;urroundings. Object A has a net charge of excess electoe- wgc ;sqp5w f,j1cd.z0)bzcs9w0 frons. 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 i0p4b /cnnd.den the direction 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 moving in a direction o8 wdi7dypw2 y- uv6-x6izrq2npposite 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 condu-3 aix .k8dhebcting 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 V frtb h197drc0potential difference. If the potential differ01b t 7hc9rrdfence 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 same pdi w9oy k(0q egv1x.1motential 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 an equipotential zi1 c0gl)s:qhsurface. l h:1c)q0izgs

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surf -xc2 e xsw1ri1kti4e(ace must 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 p zej8.-i; d5kqd (g f8rgm:cjkarticle carrying a charge equal to that on the electron as a result of moving through a potential difference of -k efci(ddj:8r g;k85j mg.zqone 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 /5qljjxp;-dr yfm 91js)i dw1unit 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 coroquwm:fj7n 7kx42y8r w:k a3c responds 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 positi.wrh f qsqa(9 (gyy14)x r: mm68hvewuve point charge is 100 V. What is the absolute potential 4.0 m away from the same point charghmw4wum(v68sg x9yf(q1.eq a ) yrhr:e?

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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 charge is 1+srspse tmwz 9-+f8n-100 V. What is the absolute potential 4.0 m away from the sam fzsts+1-pm9nr+8w ese 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 cezxmf30v5dnei)c8 v. mqa()bunter of a square is 3.0 V when a charge of +Q is located at one of the sq) )nvxq0mifb.z(v83 de cau5m uare'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 center w3b,: pb3kqlzg5 sv0j of a square is 3.0 V when a charge of +Q is located at one 5w0 vq:zl3 pgbk,sjb3of 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 two chargc*e3q, k0;m.xfc/zdn :p phv a 2gmln3es 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 isi,z/ f.xlp mh gb2gs5v.5s6ck 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 that q fr/15rmxe x /s:wz5hw)x1btc5sp 0xone has twice the plate area of the other. If the smaller capacitor has capacitancewt) x0f/5 5mx/swrx1hs5:zr pb1xeqc 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 capacitangmb8+di2nt + pce of C. If the area of the plates is doubled and the distance between the plates is halved, wid t8+mp2gn b+hat 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 isp+ *ll6nsibv- removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of char v+*s ll6-binpge 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, hwp/vk5v :;3cm p8oc xthe capacitance of tha/:h8ocppx v ;5v3kwm ct 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 capacieo8577ncnz )ba e (wxxtor are maintained with constant voltage by a battery as they are pulled apart. During this process, the ) nwn7xbax8 5o(cee7z 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 maintainvmtf; l-v 2ag 2dj v-i6b8g)pred with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during this pvijvf6-)2;mp -2 grvgta bdl8 rocess?

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26#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State three reasons f9ftqh,w 2w )ieq- a2oror adding a dielectric material between the plates of a capacitofqet-, owwrhi 2a9q)2r.
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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 pape *6naa (dq*n 7hidelm0ah9,rjr is placed between the plates of a capacitor. What happens to the,(9hh*enldja*da6 a70mn rq i capacitance?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric materialapriq o15f2p 72l;k4sf .yrpl such as paper is placed between the plates of a capacitor holding a fixed charge. What happens to the 51q7y 2li prp2ksfl;.a4 pfor 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 connected t e/awja2uxwzr;orleg:v*o: *j,;c (i( qt/rgo a battery and becomes fully charged. The capacitor is then disewt:z l(j/ex/;o(2orgiv q*u:r ,c; gaw*a rj connected, 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 holdin pt2m3r5, 3moigydq; qg a constant charge causes the energy stored in 2rqdm qp3iy tm;go,3 5that 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 d,n48m q1 en5bo5zbpcacross a given capacitor causes the energy stored in that capacitor8oecbn md 5 514bzn,qp 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 poini5m(r5erxayofq7j ;0)3nu v lt A to point B. What is the potential difference between poum0aieo)rr n 3;(yq57j5v lfx ints 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 thzb (am0m61h e)q a. wtrm13gp0e nqmzs;d 17exe potential is -50 V, to poxm;md mb t.s1 17e1rea)wang0 ezzq0(pm h 36qint 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 thur 7rolvt(+/srough an electric potential difference of 500 V. What is the kintr +lsovr /u7(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 accelerated throujxx a*b /qm70ngh an electric potential differeb0anj x*m/q x7nce of 500 V. 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 Vy jk1)2-qz uyb. What speed does it acqui2uby-z kqy1j )re?

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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 in gv i chz3xo186moving $8.5 \times 10^{18} \; electrons$?

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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 z76f19hc6xor ln b*ie a potential difference of 500 V. What is the velocity of the electron afterwar*fni1 eh9c6xz6 lrb7od?

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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 ah+.mz c-;esf6 bc ggcav.k ,x*ccelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potential d6sc *f+z c,vb;.c.k gxhamge-ifference?

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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 el.q4skd *sgh 1u);4gvwwbs.ftectrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric fi.skfw4);wv .q*us14s dgg btheld 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 m2rs 5 pb wld2rm/8n1hcagnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x =1/m2cprrhsdwb8n 2 l5 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 toward the ea7rubd +e*-bvho(l j38 p oy1hn be.zx7st. If the voltage measured relative to ground at a given point is 80 V, what is the voltage+rzd e 1hb7-(p8vhbxely*bo.3u no 7j 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 field of magnitude 3.0g7g t3x-mb sp+ V/m. What is the chas mg+b x-gt37pnge 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 connected37lt6- g3dbdf8nrh m0t:e nbz 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 1.50 m from the positive plate, what is the potential difference between the bndhn7b0tmle6 3tr: d8 fg3z- 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.msr2r/hj 1 avm qaidh q6d* ge*9)1u3v20 m, are connected to a 12-V battery. An elecmu 6hd s31 gmh* a9r)* ejrq/ia2qv1vdtron 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, 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 cq87 uxt:n 1/t shqx d+/xup1mlonnected 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 0.050 m from the positive plate, what is the speed o q1+l/ 1u7sx8muxdt n/: ptxqhf 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 elechoc . lb14p6b)6 qbq;zud.vp wtric field of 50 N/C directed toward the east. If the volthlc;p u )6o6z..qd bpbvb41w qage 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 field of 5cp*.doi(3uhtqtob8 g0 vbm:+ 0 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 a point 1.0 m directly south of td.o(bgpi:t* 08+3 u hvmcqtobhat 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 acquire jrj5hndf11x mig*xl:b0qy6 z myx*kwj74o*+a kinetic energy (in the absenc j04j*x*x1 1mo*xm6qhgn5dly fjr i7bkw+ :zye 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 distanc3s6*c4 xc eshye 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 e-i 0i1ad904. vn6sswc lvmrz3vbthk , affn1:nds of a meter stick. Find the electrical potent41 k0vvmf 9 h c-1i3wadt. :vsn6lrza0nf ,bsiial for the 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 av/ )z 4miw)rdw,+ d(nmqqe-pzt (3.0 m, 0). If the potential is taken to be zero at infinity, whatwddzi(qzvnr - w/p)4 +m)qem , 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 l5ygdql /o-r 2hsd3h.:qgaj, (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 -,q. aj/dg:h g3ohlr 52sdq lyis 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 . r 1g muthegi,h9:qm1*c 6hhjpotential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infinig 961mchjhmgr1ih,. etqhu*: ty 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 q05 g9osqoie p2-ywd8+q are placed at the corners of 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 = 4.0 cy5qd gweo -8s0q2 9iopm?

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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 +4.0fawr z8o96 ciug5 7q6wt09c fm 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 centerzg6rmw59wi87tcqucf 69oa f 0?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An alpha particle (char,3r ,d)bkt s/bpek )jyge +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 of 2.0 mC, at the corxr *qavn3q * tyc4ty/.ners of an equilateral triangley.n a*tt 3c4 rqvy*q/x 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 whenjz r*,8y fp5ai it is charged to 100 ,8zj riy*5afpV?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitox u/d2*yw m.vbr 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 ifqfk( (mga1 ;ws filled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is thek;(mg1 aw( fqf 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 oh6bekx etf; m+(2l c3rf 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 cmy3omnmm 9 a3/m. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is thmo3ma3m/ my9 ne 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 v, r, +frwbk6kthe battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional chargw6 krf,b+,rkv e 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 orf6eodpv 0o:5pe rl 1snym 69*n a 15 mF capacitor. How much energy is stored in the cr951mld sv60fyo :poe6rp ne*apacitor?

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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 enemw6 xt8f;iszessy l2+h+* fe8rgy stored in the capacitowslf2* zsm +h ts6x8e+8ey ;fir?

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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 ,kg a(b7u3lhba 2br1zflows onto the plates of a capacitor when it is connected to a 12.0-V battery.k3,ha(b2u labr7zg1b 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*x9 r97onrd fdbs 0bvecs5sin t 4;/4w 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 consists of pliu.xj 2-0wd.mxzjfr 1 .ekps6ates 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 o1 ax: adt-z+m3i3d zg-xd6aml f 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 plci1. u *uiw54(oa v*el hj*cdbib71qdates 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 consq- mbijdz;d1mwvkpj q 5z56 93tructed 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 ch(i q+xzc,0 jponstructed 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 charge 8 :g3,6uxoqtxb0w/ zj9bftwwd. The battery is removed and a slab of dielectric that completely fills the space between the plat86txzoj g0:/uxw9 tfwbqw 3b ,es 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 bawt*y6;*i xg-hkw-m ogkgzz16j a( yt1ttery 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 dielectric has a dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is insx-ikz*w;-m tywg gtj6 ko6a11g*h(y zerted?

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