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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 not a vectovf)jfu, 5c(up r?

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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 isjp0l,7s wz4pf 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 insuy*dwvuf0y-9 jbizu- ,-dbt j1lated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher poten0u- j,-9ydvj u1t- byd* zwfibtial?

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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 fiehn io-n*bybfiozs6 r*j .f0;,cmy7m *ld

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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 :h/pb5gro a4i a 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 placedquf:yu9uc s*n7 ;9shy 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 from rest to a s4 anbr+i*qz 7uou+c4y peed v by a 500 V potential difference. If the pote+ncy4 4r 7u* qzb+uoaintial 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 all points a4yahohi9rgf ,a /q3sr ,(:aflre 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 k0bbxkph*9 h1t f19rp from point A to point B along an equipotential surfacfkk*9bpbr0 t91h xhp 1e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mustqu(r dwrkapn td 5dy3 ns/6:w39ehg)3 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-5jn :v:uk yal charge equal to that on the electron as a result of movi5n-y:ku ajl:v ng 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 uw..sysvby-ilc96f-vn sxh66) bj1 qfnit 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 e1f xdwxq0ia z d(;z,/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 point ck2 wa-mdj mze:w0+ xw 72ev jrfcv( 1798axlsjharge is 100 V. What is the absmaw m2wxxd(flc-8w 21:jj ra7+k9z jese07vvolute 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 distance of 2.kceaj9 +ep 9-bjw7 fl,0 m from a negative point charge is -100 V. What is the absolutlcp+eab7jfje kw,9 9-e potential 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 3n7d oyxa0- eh7.0 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 corners is also filled with a charge oh aneox-7 7dy0f +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 thp ljrng 8p8m2316mfnee center of a square is 3.0 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 a sp gnp6rfn e88m32m1lj econd
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 conbxpw t.-7y(,g;xm:wio q*tyw sist 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 hofthiy;y5b 7e*-te,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 eyui:.z) i6aa.q-xp p caum68ivery respect except that one has twice the plz-:ami)iaxq.6y a pi.up8c u 6ate 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.x4- o olld6umpqqecz*7 5p4e area of the plates is doubllq-mue.po4x4 zqep7cl5 6*oded 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 is8ewq+ 7-p(qait f sryh)2l8efe*i ff; removed. The plates are immediately pulled apart. (With the bahp2f fw e7si tqqey(rl+ *; ifa)8e8-fttery 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 va8z1 z*i i ikob7 uf:)u1vu j5jv84eea given capacitor is weakened, the cav84auo117*e) i vzj 5z8i uuv: iejkfbpacitance 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 constantq5-x bcphu: ;)dk c.axluv(3 b q+)eqs voltage by a battery as they are pulled apart. During this process, the amount of charge on the plates m .p:auqdh( ecx) c;q 3-v5bsul+kxq b)ust

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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 maintained with constan4a;/d mj+dpsh8ceos:sh 5. pat voltage by a battery as they are pulled apart. What happens to the strength of the electric fieldpe+c4sap;os5a h/sdh. j dm:8 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 bejh/ ibg t.539zelux z4tween the plates of a capacit.i4zbxuh9/eg 53zj l tor.
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material s1- je9 *ymxujb*4 bj q asn8k0xc-f0zcuch as paper is placed between the plates of a capacitor. What happens to cc8ubjex-zqfb 0- 04jk9xy1 sj** mna 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/tq:l 4f,, 0 9k2dgzbij40ouw zfsuzm is placed between the plates of a capacitor holding a fixed charge. What happens to bk0duzsf t4oj02 fwl,i4: ,qzz 9 gmu/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 connected to a battery and becom 73th;ciwk-:2fguio pes 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 tki2c:7h;opf-gwu 3i 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 consta(pzl;s lqyp kh *qe446nt charge causes the energy stored in that capacitorqe(64*k zpqlp 4shl;y 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 th- ij-gz7iokl2e3rr7 4f* qhxfe energy stored in that capacitor tqgf3z-7 f-erj4 rihk7x*2iol o

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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 ofs+(4tsaol d b. charge from point A to point B. What is the potential sabl.o +s 4td(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 electron from point tet .g.3b o2p vcd+.,r3v phvlA, where the potential is -50 V, to point B, where gvd.r bch.tv3,+ 2op. e3ltpvthe 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 electricaluet;b20 p0ki 9zg3fr imawwt ,+v- 4 potential difference of 500 V. What is the kinetic energypv ,a;t rfaw0 +gim3uke iwb04zl-9 2t 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 :x bpc4rukoj4pj.+y 5uc*ehag 1,:t t, is accelerated through an electric potential difference of 500 V. What is the speed of the proton?:ahkt +14b:rxuj po 4. etgu5j,c*pcy

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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 thz,ff xdjp.)3 crough a potential difference of 1200 V. What speedjzc px) d,3.ff 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 dojxbzj 9 ,*pvy( 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 thfry4qx1evb0h+ w ,9ji sg ik69rough a potential difference of 500 V. What is the velo6sxq 4kyb ri1ejh9,9gi0+ fwvcity 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 mCxgy-9h vgd afg., , 6ez5btfh1. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What -h.fv ,x 9 zta1gd65g,hgf beyis 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 electrical potential difference between two pacs1tn:ev9 1do a(0ixxv)ab- wrallel metal plates separated by 1.0 mm. What is txa ) 0docws1b n: vvie9t(a-x1he 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, is directed para q nfba:+ f4tjb+zj7b3llel to the +x axis. In zabf7f:jbj4+q tb 3+f the potential 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 toward the east. Iz0a868s h lj2xfl5irif the voltage measured relative to ground at a given point is 80 V, ilix2jr 65z0 ls8hf8a 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 az1 uvq49jb;+dk et oudftk6v 8uki495 long the direction of an electric field of magnitude 3.0 V/m. What is the change in kinetic energy of the prdt6u85kojvdieqz1bv+; k 49 9 k ftuu4oton?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, sepjl/-o5 4-o 9vmfhb vbjarated 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 arrives at a distance 1.50 m from the positive plate, what is them95vvoo b/j4lbhj-f - 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 0.27h+otec4 qvf 90 m, are connected to a 12-V battery. An ef+th7o vc 49eqlectron 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. p;67d d0nxmnw20 m, are connected to a 12-V battery. An electr w0p;7dnn d6xmon 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 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 the-wx p (fg.pv12y+- btguvko 7t voltp wgty(o1ubkxv.-v+f p t7g 2-age 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 50 N/C directed toweqv5 y7z w.soqd62 dg5r -28eu ogbs9ward 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..d5 yz2o9 b2rowv5e 7qew sds guq86-g0 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, it will acqui+xvoxns4w8 ;ure a kinetic energy (in the absence of wx n+v4ou8xs; 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 potentia ;l*ptn vf:r)yz8 c(lvl 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 0onvi 8x08e ka,*wb aaat the ends of a meter stick. Find the electrical potential for the center of the meter e0wiaok8v *,xaa8b n0 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-ndi:)+he nw2b7 t 2liirC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, whit)7n2e:br+wh i ld2 iat 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 pot lucn.sv.(p; uential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at p(vcp .luns.; uoint (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 a7 r9e ne9kvz7hnw0l b6t (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 charge from infinity to point (0,eke v7z7b 0r9hnnlw96 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 ppktf/e, tw3 cl)*bi 3xlaced at the corners of a rectangle of sidetwb ef*itpxc3/ k3l),s 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 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 diagon 4oiu hk.p.4egally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potentia4 p. gekuhi4.ol 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,v ;q,o 9wyd bep(nm hj,xj6f24 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 chf) thsvv;9.k2jls ,bqarges, each of 2.0 mC, at the corners.s 2v)h vsq; fljkbt,9 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-mF capacitor wf 9lh 7s b5zncxdj9rb1w0om, eh+u*b-hen it is charged to 100 V+9 hsd hzj5un7*l,ce0mbbr-wo1f 9x b?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacito y b0dy28 5 *ewo rb.hi;pji0myep-vt-r 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 is filled wit+dscw *x 4p5xqh air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is thedx5+ 4 cswxp*q 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 capacito :; 6vnd+mp(*disgrjxr 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. y cd;tej( +s/6*ampnr If the potential difference between the plates is 2000 V, with thecr; 6+pe jmyd/*na(ts 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. Afte/s.pf, bkzipo *v2)w6mgh4 o br the battery fully charges the capacitor, the capacitor is immersed in transform4zogshvb2mpb)po6 .i ,k / w*fer 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 placed on a 15 mF capacitor. How mq c1k.n 3nmq:9xn;wvcuch energy is stored in the capacitxn 9 kqncq; 1.wncm:v3or?

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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. Whatbhgmp e s-frx8/)-5r j is the energy stored in the capacitor?x br /5-r -8)pshgmefj

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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 conn3 +y3a lnf6ry 9ttmj9xected to a 12.0-V battery. How much work was done in charging thit99+yn63xyalr jf m3t s 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 thqp4bz1nv6 mj2 . uzmi*at 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 lvart-k ll3.0 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 - 9mbd zwk*:szqzc+):c2cddf 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 platesihiyc3gjgsoo5hq5p: v 6- 6i + 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 construgee6d/h pd+c 0cted 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 capac07 mn+g86vo(kw 5vh/crni pjv itor is 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 b*eem .1bs 9crwq2zslj 6 j,n.oecomes fully charged. The battery is reml,..z cs6w2j1 *bmqnerosej9 oved 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 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 becomeswz ,r( ab55sci fully charged. The battery is removed and a slab of dielectric that complete 5i(a,scw5br zly 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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