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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 *o- ls;uv4vdoj: hs1e 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 is a+f2srh5v5+ dho p* u. 5hyyiob

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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 surrounding5 dne u6a8fjcblwp01pus h228s. Object A has a net charge of excess electrons. Obj2aefuu08 1 chbl 56n2ws8pdp ject 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 dire*g; za dmu(,brction 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 opposl+j -m/d5l bvh2 s*mu li4)oreinr* ,aite 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 are2v: gx9yt 1oijl/zh/f placed 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 accelerated fro/o-r /ovnmy1cep 4m3om rest to a speed v by a 500 V potential difference. If 43ropyo n-ovmme c/1/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 alje *i*dz; 7py/2wl kqf f,9ssal 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 along an equipota w ,6gdgt1n7gmgx(i 7ential surface.g i (a1gxw d77t,nm6gg

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfap a 0f(6lp9frg+ nju0fce 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 particle carryi.g)twd08wm+dg* ab pung a charge equal to that on the electron as dwb)0p*ud.a m+gw8t g a result of moving 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 unitv/4-by z-) hw n3fxtsh 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 correspondsmsl8sz 9a4k5(4)zg1 sw )y9lapj zuwz 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 vahd4temp*(o a:h-,gt a distance of 2.0 m from a positive point charge is 100 V. What is theegdt4 m( o-*v ,hpa:ah 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 dm:5 ly,mrw d*9g 2 :8: b)7jv/snqzccjbpzclnistance of 2.0 m from a negative point charge is -100 V. What is the absolute pot7* / n:5nlqjrbz9lc zy:cdmcv m w)j,2psbg8 :ential 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 V when a charh *:xj 5y0gva/hoiq3j zvmlr3 r:/u;dge of +Q is located at one of the square's cryo /v: g3rh3jvla u*5 m:jd;0zq /xhiorners. 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 g3he/sva/db-) ez9l t1-q 9zpyoj/ vbpp: hz3 a square is 3.0 V when a charge of +Q ishabq-tsv99z3 y3g1/ h /d o-bepz e :lvp)j/zp located 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 consisbdzge j*y/-e5u lrvc63m/xj 89x 3vlv t 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 is6 3)fj;nelj,kt-w sot 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 arr5l wq)pxz yky:k *3i8e identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, t58* kk3 ypwz:il )qyrxhe 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 area of the pla v 7yaokpi-jnbxm:4+ 6 cq7d9xtes is doubled 7ax:7cm 6x yop+4nvjbd -iq9k and the distance between 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 is removed. ,j98klgo8s/ fe wc v,oThe plates are immedia9c o/vejo 8,l8wksg,ftely 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 betweenq:jt ba. 1wj4j the plates of a given capacitor is weakened, the capacitance of that capacitoj :tqa4jb.1wjr

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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 with3*)7y gcxl4 ahpi upsq2d/,a4+nvmhf j :gx-l constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the plates mus /aqhl+x)h- 4*:id pxj 4nc7paug,l ygmvs2f3t

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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 maintaiqqg u jwd0z3onb,a+ldn8 3bw09 s; kt0ned with constant voltage by a bn j ;b+ugo03s89wwd q,d3a00klb zqnt attery 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 dielel,lp s, 9(gtifctric material between the plates of a cap( t pgl9,ifls,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 cat2yhm9,w+ckfx i -:er pacitor. Whkrw:f m -ihc92ye,xt+ 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 the plates of a capaci)uju;uwg6i l;+ep)c m tor holding a fixed charge. What happens to the electrlwceig) ;j um ;)u6+upic 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 to a batterr+a i )on/i u/p/4chwcc e78hby and becomes fully charged. ubrep/a)+7/i o ic4hh8n c/ wc 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 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 a3t 59xuw wso)e)4zn yp capacitor holding a constant charge causes the energy stored in that ca9so 4x))wznytpu53e wpacitor 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 acrfvk:qlvcnme2 9((r.a2(l m a noss a given capacitor causes the energy stored in that capacitorm.9 lvfncak(e:m22nv( a(ql r 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/k.x0v58 sh g /mkyqqk C of charge from point A to point B. What is the potential difference between k./ k/q8q0xgsy v 5mkhpoints 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 elec yhn +lt.fqg2-tron from point A, where the potential is -50 V, to point B, where the potential is +50 V, isq-fl+n t.g2 yh

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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 poteh.ugi48 mcx b2 /vq6 0dkylyt6ntial difference of 500 V.g xc/hdk 860q.tl6b2vu y i4ym 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 electiw,m m43xrl0g ibg;k9s7 h 4zlric potential difference of ki ggl;,hl4 zx mb3i0s9w74mr500 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 fak0vvio1i .2f4 ;sf(-nu gt iwflls through a potential difference of 1200 V. What speed does it acquireki wvotf-(uf1sn2ifg.vi 4 0;?

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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 movib.rik0+g gwgc4au zld0t2 i*0ng $8.5 \times 10^{18} \; electrons$?

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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 accelera6frhbmz b7c2 d7(cai:ted through a potential difference of 500 V. What is the velocity of the electf6d :i rh am772czbc(bron 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 at 7mhu-srqw-4 h.y6 yzccelerated from rest th6 4 q 7t-zhh.sywrum-yrough 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 ez, b5m *ct3ij3lmahs+2nii i0lectrical potential difference between two parallel metal plates separated by 1.0 mm.c*i0,2i lm+isi ah3 j5bt 3zmn 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,f*2ja/p-abk 6;j7 v5ilo ;3mnacu u xk with a magnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what jo3ui;mnpv bafj6akx l 2; 7c5/-a*k uis 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 electricovxg :rd3f:vm 71rd w+ field of 50 N/C directed toward the east. If the voltage measured relative to grou:3ddxrvowfg7mv:+ 1 rnd at a given 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 the direction of an evv cdlk yw+j6jg)q3:. j6g99a n iek)xlectric field of magnitude 3.0 V/m. What is the change in kinetic energ9 gcje+k kj) v6 yvx6anw 9:lqid).3jgy 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. isth( tqn9, 2 e0z3e2 g of5)phlhf6oo An electron released from rest at a location 0. (25,o3lo s206fq e)fozngtip e 9hhht10 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, 8kej ;s.og+xf4 :afvf5v r)meseparated by 0.20 m, are connected to a 12-V battery. An electr+ ) f.e;v58o xkfm jgf:e4ravson 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 connected to a *53bwpmu ly-.ij 9ewj12-V battery. An electron released from rest at a location 0.10 m from the negative plate. i l9b5ew3 mj.pjy*w-u 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. vk r6 x7y(f,r+ceusm 97b 0vjjIf the voltage measured relative to ground at a give76 yu(,rjc+r sj97m k e0bfvxvn 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/C directed towarevql2.vs:mj6y.+c: fcz 5nto d the east. If the voltage measured relative to ground at a zcovq .j: :+5 ly2.cvmne6stfgiven 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 throug;pt*2kyk**tt4 k6ik1bm sgz n h a potential difference of 12 V, it will acquire a kinetic energ*tt zp*b62*;1i4kgykmk kn ts y (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 at a dista9 z* :9htd8 qj1cj/w.j,bq5bpfsrgn rnce 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 pot4ii(ginr z 0 sm:;7rydential for the center (i z7rr4;d0m :syiign 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, t ;j1a0 8/inhwar5tki 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 tira 8w 0think/;1 aj5the 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 pote1eflp ;4cin 25u qth.wntial is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0, 4.045ep2. n; l ftuqiw1hc 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 (3.098x qgwn q(vio j.7ct6 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infinit7t qg x( wv6ioq.89njcy 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 equalvc .v1u2saqri)n*( ki charge +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 qk1) 2(q. v iiasrnuvc* = 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 diagonally kz,p3b ,y xex4opposite corners. In the other two corners are placed charges of +3.0 mC aez 3,kb4p,xxynd -3.0 mC. 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 +2d(b 30f- eyj qv*0rnfae, 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 2.0xeav7,i rl nm/spn8* 1 mC, at the corners of an equilateral triangle of side 2.0 cm?r/a 7ne m,1xn8pl*v si

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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 dwd wzn:8a;isa n 159u.9v(4ffvc bsm 2.0-mF capacitor when it is charged to 100 Va45 :1d i w9csunwv(;dvzmn 9af8 .bsf?

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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. e*wat7vxz) vrea $0.50 \; m^{2}$ 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 plates km32c7 vd4uxw yu zxdw5:43ehare separated by 0.050 mm. If the capacitance hvcyd524kxz 3xwe 4uwd7m u: 3is 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 capacitsh4 jp s+8ye 1 ;o;ye;beefaw0or 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 of 5.0 cm. If the potenti()yb6qbeh es: al difference between the plah s(:qbeye6b)tes is 2000 V, with 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 100-V battery. After the a v a*.mh;0gdj3mglf)qu2j l1battery fully chagf* g2;)hv0ja.la mud m 3jql1rges the capacitor, the capacitor is immersed in transformer 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 pl(lcv go mc x51-5pcmcb.82q ovaced on a 15 mF capacitor. How much energy is stored in thevp2m5oc1(lobcx cm-. 85gqv c 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 isc4n2 cwuyq;6y the energy stored in the capacitou462 nyyc;cqwr?

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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 iso:yi9ydzu8t )6io.x 5s -m yex connected to a 12.0-V i- 9e)tzom8xiydsu 5yo.y :x6 battery. 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 so that ivi7l;21hnc qe) 5he: 7mxw c- 7pr9qlzi:urj mt 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 plates of argjv )q)+r4l6orz0xua/l i8v .p(pp mzea $1.5 \times 10^{-4} \; m^{2}$ 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 lsffo .n4 yj.* ;qby43uj)2v)q mqdfzplates 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 oftuxm.lg qhi 5dwsoj524q z*36:x uan* 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 constructednnuj :jith)1 , 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 ,ob.,u3h +hcm+ v/ov-jdz fpkconstructed 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 batf m3gf62o+rz ktery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. o3+ fmgkf 26rzIf 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 charged. 4knus5qj*g p( 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 voltan qu *5jg(p4skge across the capacitor's plates after the slab is inserted?

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