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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://mail.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://mail.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 ve-ay p4x*w kt4 lcbvi pjr,; qoj;r8/7octor?

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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 :)t o v xor6m fv05qchj9ej)k;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 surroundi8f*; 3myujscyngs. Object A has a net charge of excess electrons. Object B fs83 ;*jyuycm 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 b/nlf7: snzdb75sl:m(r v:f ddirection 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 if:gs81* i8u/yi hxyk sn 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 placed on a hollow conductd1lb0 e5 c5ukjftdd.4ygo 97s+ n )qkaing 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 accele/v2 2;y iwuyix77s fzn q5x-srrated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V,7sx/izf y257vx nyq u ws;r2-i 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 potential if :wa0pvp-92- /zwubd szzvw 9s 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 akun)r c*m5)i glong an equipotential surface.m)u rn gkc)i5*

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface m yffs18b4o2fs ust 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 particbz74ezy up,c/c+o m k l8pz9:jle carrying a charge equal to that on the electron as a result of moving througk4pe :l,mcucbp 78 /9zjzo+yzh 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 / 7 dsuk/9-rp8hmkwnna 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 corre4aklkvi, x2c; sponds 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 lt ekob(0r hit6 :d4a/charge is 100 V. What is the absolute potential 4.0 m awa h/ 6lbtr(4tao0k:eidy 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 2.0 m from a negative pointd .rv,ob 3gn5kiwblua nx1(2; charge is -100 V. What is the absolute potrg.;lb a25,n 1bu(3n dvkox wiential 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+j:1mlj fa3 nbd1;od60bz0;tc kh-qqm0gke k of a square is 3.0 V when a charge of +Q is located a6t l;qo:g-j hc;b q0z1mdk kj 30f k+1ne0bmadt 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 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 cens.f pdoo d;zc9 +0p7vnter of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolutdpv+. s0dc;oofzp 79 ne 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 charges that a-d xkqm 5(msh3re

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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 kb7fso eojpki gzk( ;;f/*93kis 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 eve lumn-6 w:9 /0kejshuhry respect except that one has twice the plate area of the other. If the smaller capacitor has capacim:uehj 69h-s n u0lwk/tance 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 capacit pshr)i* /fkm1ance of C. If the area of the plates is doubled and tsph mki1/r) f*he 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 ando 8bgr5yr 86i pzh6skehp;2d1 then is removed. The plates are immediately pulled apart. (Wi rz;p 1 hi5hd6ge2b6pk8yr s8oth 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 between the plates of t bb1y7rt3i1fxyxvh:i;g2 yp*d3r s6 a given capacitor is weakened, the ca*6;2 3h:xdi1r1tyt7x3 ips fgy rbvyb pacitance 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 wit.y/kx l+ai 6a-:nvniyh constant voltage by a battery as thex +klaiy.y/:6aivn- ny are pulled 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-p+x.vbn + +an:b;1h- ,mjb phrfn)nxldlate capacitor are maintained with constant voltage by a battery as they are pulled apnbb)lh:a- n pvnxb r +xdf,.+jm+hn 1;art. 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 forxhog54xs ,it) adding a dielectric material between the plates of a capacitgxi4)htx s5, oor.
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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 hqaj+:u* uc8z the plates of a capacitor. What happens to t* z:quj+ca8h uhe 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 sukpsjjza9mmfr0-;x hf/ 3 s2g.9c us6 5r8nzvpch as paper is placed between the plates of a capacitor holding a fnr /;5fp mf pcu 90zj2g.8r vaz63sh smjsk9x-ixed charge. What 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 is connected to a battery and becomes fs+gcjy y wc* :u4ez-(j-c z8jiully charged. The capacitor eg(4i - zjsu+y 8yc jzc:*-jwcis 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 a0ph3xzbz:x- t81ciaju /1b/ sqr0wdv 4wv ac3 capacitor holding a constant charge causes the energy stored ins h3tajqcu304-8ip / 1dw/:1zax bb r vvzx0wc 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 acrot0i;+qzj h0o 4-8-cl fk(g2minvt1 jev de 0jlss a given capacitor causes the energy stored in that capacitorhtfvo-(j80ltjln00m c 4 ;vj k1ez2i -ge+i dq 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 movfs* bo0wmi f9)e 10 C of charge from point A to point B. What is the potential difference betwee)bmw09 offs *in 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 e-am2m(jcy/ r-h0lau t lectron from point A, where the potential is -50 V, to point B, where the potentim2a mtlu/(aj rc -0y-hal 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 electr4dvfbhmmqy4 ft/ i5 aq5m4 r6:ic potential difference of 500 V. What is the kinetic energy oft yda4qf654r4mm/ im5fhvq :b 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 potentiiw,on:6whj/z 2 :gurcflwe )0 al difference of 500 V. What is the speed of the urw2 f,ji0)g::l 6wwoznc/ehproton?

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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 differe de)7z* pq6:t5mdlqa unce of 1200 V. What 6t)aqddm eq lu7 *p:z5speed 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 9.0pqjmm()k j1m7 V 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 accelerat4kx 2r-osp, lred through a potential difference of 500 V. What ,2xs lp4r- koris the velocity 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 mC. The object is accelerated from relm2y lw)39gvkn: gsnk,v6 m8gst through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the m k)2 w yvnsk,mngv9mlg:l638gagnitude 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 differeny8,;l ujsppkbdm 50/ uce between two parallel metal plates separated by 1.0 mm. What is the electric field between the plaj;ku,l8 d ubps/yp0 m5tes?

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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 d,h i0iymwr63; l3bafkirected parallel to the +x axis. If the potential at x = 5.0 m is 2500 3,k0 f3wbi; layhmr6iV, 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 direzo( 9cj :njwojhd/1( ccted toward the east. If the voltage measured relativeo( nhc jdc9(jj 1z/o:w to ground 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 dirh+g quvgobpuhxq1x2+qjh lg: :4+/7p ection of an electric field of magnitude 3.0 V/l:hxj+ xg1 p u:/vquq4h7+p2b hoq+ggm. What 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 connece7vj52amv o,fted 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 fromf, 5 jva7ov2em 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, nsg 5*mz8dpuiz , u7gz eoqqy97+yh*+9wg,hvare 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 0.050 m from the positive plate, how much kinetic energy does the elzs ym8yzpqive9w, ghg+9*7 hn7 +qg z,u*du5oectron 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 h)qfnj* 9rex cb7ww9+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 0.050 m from the positive plate, what is the f+7* q9re xnbww9 )chjspeed 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 lvr jgq*nb(p ;9et,u1of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, teugljn(v; b *1r9q,pwhat 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 ofsg2ml1-bt z v; 50 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 om2;s-gb1tvl z f 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 tn+fxq,vcffmi:4, duh n(pjo;k +u.7r hrough a potential difference of 12 V, it will acquire a kinetic energy (in the abs ,f7+ ixjmq ;h(p urof.: ,fd+cnn4uvkence 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 distance of bve:eqm 3g7h98ectk/$5.0 \times 10^{-10} \; m$ 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 r nnj4n04im21 i*wuz yends of a meter stick. Find the electrical potential for *j ywi0rnz4nm1u 4i2nthe 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- rs3p n2,-7hiq5avyczf(e 2 ocnC charge is at (3.0 m, 0). If the potential is taken to be zero at infiq s3f2vzynea,2i(7p-o5hc crnity, 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 a:qvasvkc -9 ;ft (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 is the electr:fs-v9vqca; k ic 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 -2.3qotnrd5 kqdx6/*z ,jq ib-6f 0-nC charge 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 charg*5n ,zdqfqjki /6t3q-d ox rb6e 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 are placedy. n1 xj ccv/5flnl8.h at the corners of a rectangle of sides a and b. What is the potential at the center of the5j yll.c.h 8v1c/ xnnf 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 7u vx+fpvo6,s;:ph fkx;ip(6y lw,tv . 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 fvv v, hx:py (7+;,sitxpw6ulofp ;k6 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 (chfx3qrj2 *p8v9s,g h r:d v6nb*f(ssz farge +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 plac(/s-9rr /ophmz4ccn p e three charges, each of 2.0 mC, at the corners of an equilateral triangle of side 2.cp9 cns mopr 4h(-/r/z0 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 capagpzvn,yjva-8oy 8j mhh:5ba65b pu -1citor when it is charged to 100 Vv ,aym8 upg jvbab5 y8h1 pn-oh6z:5-j?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacxdb9z0n/( tb yitor 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 with air, and the plates a.(db )5*ta )evv y*oyaxzxb6xre separated by 0.050 mm. If the capacitance is 17.3 pF, what is thevvby x*a x tz(b)ae)*.5xo6dy 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 h/) lnk 9*gfgyjas 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 *m8qi1jxh5 xmyd0v-uof 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the- i*mq xvd5 yu1jhmx08 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 1003qklp;1 u4zp, xpx8 ws-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). p p xq8x,zw14k3 sulp;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 much enerawfb* qz2x.+b; e cyg3gy is stored in the cabfy+xb2 ;qec*wg z3 a.pacitor?

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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 cav3:dxhxb1e g(-,t9zpu v .uk epacitor. What is the energy stored in the capaci ue pt(zd,h.ebxg 3u-x1v:kv9 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 mc5)7afq:(v b8giaddzb-e b-of a capacitor when it is connected to a 12.0-V battery. How much work was done in charging this capa7 (zcbd-bid -qme:bav)5 gf8 acitor?

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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 chargedf 7+ o dxrowe/m(djh:0 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 co.rve p j1zhk*is:rq(a-9ix + znsists 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 ok 1zphc3bp0xhr 2:b6l 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 plap u8y hcgsyo.)2hs( b;tes 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 captv4r o92ryp vc-db95,)ngs cmacitor 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 capacit7 3yqijp glmr-p496vqmz7- bzor 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 becomes fully k8n+gz a hh26dcharged. 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 t hz6n gd8+2kahhe 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 6tkjxku52/f gijgcid 3:p7 0dbecomes 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 capacit532f6ikj0/gddxpc :u7tjkg ior's plates after the slab is inserted?

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