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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 eczk;7 g/ay r rx5,s o84gz;c3ao nrs.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 coulombp5m*t:7f y.nmb8yd9xzr nx/ d is 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 fro. or8 +5yrssdnm their surroundings. Object A has a net charge of excy sd8r .n+o5sress electrons. 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 7 b ifem6bzp*p** kh(zin 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 divz*tf8.n be+frection 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 holas tof l3h))1wy-rn j*low 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 r -x;0cemaa n-gh8mwa r bb2)h8est to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the newa0m8e-h g bwxh marn- )8c;2ab 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 7cvtv bl) s,2-m(jkmeis 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 agde6u04iy;nfq / 4clsf 0uo,pn equipotential surfacecg qf i,luopsf6yn4e/ u4d0; 0.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface u rc 9gs1a5;tfi/m4r5nqt u d2must 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 fya bc waab8)ygkpj 7m/nav-.+ 9d-e) charge equal to that on the electron as a result of moving through a potential differeb bm+97ag)w aa/yacp-v -nky.fdj)e8nce 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 unit odh 2ta2g ;v7. lr-dqo3m4 xvtlf

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt covj7omc w 9h*2i 9b6acvp)vn4wrresponds 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 p10suf6tshajy2 l- e9 xoint charge is 100 V. What is the absolute pf6exyjhtalus2 s-01 9otential 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)5 ;lotjget0a .0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from jl0 e);tg toa5the 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 3ki69 x *9k ik g 6s31crdwjhoe(13cvut.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 ce1ck( 6kg 9ojus 3t c9wr*dh x1ivki36orners 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 V when a k +wsv anufu(ia*z,:,ri ; skb*8 n+ikcharge of +Q is located at one of the squar wai:iza sk(*+,;v*sfi 8+nk,k rnuub e'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 consiaqaf 6,6xjs r6st 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 qg, 3.o4uw gkma

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capacd6x80 tyxboqo3k11wwvfim: 6 itors are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance3xkq8y0i o o6md 1wtbxwf:6v1 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 capacz3 egr15am7y-x bp q(ritance of C. If the area of the plates is doubled and the distance between the platbz rg5-3 m17prq y(aexes 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 capacitorhyc8u*n ej(aiv55gwjf:djro.7 ,9kr fully and then is removed. The plates are immediately pulled apart. (With the a:7v yjde*8c uj,or 5fi.5g( nhw9krjbattery 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 a given capacitor i8sb6mga5.v /1do rlps 25ie5pblcos*s weakened, the capacitance of th m poli bl5ardb2s /16v58.opsce*sg 5at 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 capacito+ tv/,fbn:zkg* oo+tdr are maintained with constant voltage by a battery as they are pulled apart. ,tob gn+o+vt*:fd zk/ 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 maintained with consta im5w/xlur4d4)rh k.-oaj ) umnt voltage by a batteryu4r-)a5l rjkm mhud) 4ix/.ow 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 dielectr ;oh; yawwm65z- bc(f4w,v6uu zn/k:pynj;l fic material between the plates of a capacif5(wfn-;omj wuz/y:nvcb ; z4uha;wk6p 6y 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 such as paper is placed between the plates of a capacitor:bho*maaq. vf;s 2cd2 . What *bsoa:c q2dmav2 f ;h.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 betwke*zh z 14v/4sou kb3neen the plates of a capacitor holding a fixed charge. What happens to the electric f*k uz34 /kes14ozbh nvield 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 fully charged.+njxya. t:8 u x3wn/nq The capacitor is then disconnected, and the separation between the plates is increased in suchn3nnw /x. ytjq+:au x8 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 holding a constant charge causes rclpuw5p m)9 5the ener lpu59w)rcp m5gy stored in 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 acrozot+z/*3q :l ;n*ukmjupmnr /ss a given capacitor causes the energy stored in that capacitor tomo;zlnur p+ :kn*tj/mz q/u*3

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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 fho-o5os:0y 9pags1gixh,.r charge from point A to point B. What is the potentx ,gi:sy af1gh5oo0 -o 9shrp.ial 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 yig ycebe0 /g;-*53qqfj:sw aksf5w gq6af94an electron from point A, where the potential is -50 V, to point B, where the potential is +50 q3q 5fw9-ay0sbj 5:ck*i;e/as wq ygfgg4 6efV, 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 rru/akb:8l pt(; nw 5trest, is accelerated through an electric potential difference of 500 V. What is the kinetic energy of thetr5( 8ktp;u/w :r lbna 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 acceleratekpq/u; 8ebl q j k(p8d.6g/olao5l 9vhd through an electric potential difference of 500 V. Wh6h bv lok//8859ea kd(q ;o.luqpl gpjat 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 througiw4 oc/ ;akngwh 71wc.h a potential difference of 1200 V. What sicw.gk;wwo7/a4hn c 1peed 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 dac:rq*:;y3 u:ljp/ a2gf vrxmo 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 differencefhoxfi aw 342( of 500 V. What is the velocity o 2hiowa(ff x43f 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 acceleratp( owz 7/oqyi41b ses2ed from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What i /owi sse(71pz4obq2y s 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 ele rf7- t )n1orkud:a6dncjzk),ctrical potential difference between two parallel metal plates separated by 1.0 mm. What is t ro tnk) 6j:k-c,17dad)nruzfhe 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,yp-5qy6 9lg;kc92nrhi*ctg sb o 1/kb with a magnitude of 500 V/m, is directed parallel to the +x axis. p9 5 ti c196*c y krnl;ybgg2kbso-q/h If 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 dircx)pkhg:7kfc n27kaa6i y/l )ected toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 mpy))7 l nkkck6/acf7 aix2:hg 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 upm9ncwi gxnd4/ *8t(along the direction of an electric field of magnitude 3.0 V/m. What is the change updc8n g(in t/mx4w *9in 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 connec6p1sn7mmrzel 1;. g,otign 0ated to a 12-V battery. An electron released from rest at a location 0.10 mne.;07maigmnz lgs6tp,r o11 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, separated by 0.20 m, are connected to a 12-V battery. Af3lmi5q qi-.f n electron releas 5lqqfmi. -i3fed 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 bl ( )4p 75l.ejr1uzpeab(g -ey, yg4om-wcgmconnected 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 fr-mlgru o. z4a4y-mcg(1eejegb)(wl57pyb p, om 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 5q 0 *d(/*dfjltbiw2 iwsw2-wm0 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 direct*djl-bwswidw2 m*( / wi02ftqly 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 fieldm, m x;s g*0pbk3vof7+nfv.z w of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point i*3,wmx f0 pb+vz7 .gnvosmf k;n 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 through a potential difference of 12 V, it will acqy/u8b bgm4t 5quire a kinetic energy (in the absence of friction) ofy /bu5bg 4t8mq

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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 iru9:jni,i q.e 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 1 0a ezsl7kcw,(g0 jzia meter stick. Find the electrical potential for tag 1iscl 0zk7(w j0,ezhe 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-nCx2v6krku h7 x/ charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electr 7kkvh 26urxx/ic 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 a. acs bh7+:6co6la0 kic ejk u4d.:bmct (3.0 m, 0). If the potential is taken to be:c7am. ek lc46ob0 bc kih:.acdu +s6j zero at infinity, what is 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 dy8y ;nun:ff3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC yufn dn3:y8; fcharge 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 equa,0x8auf2a*cud49sf jmai n*be co6u;l charge +q are placed at the corners of a rectangle of sides a and b. Whafc6* ij,axb8ecumu04f* o9a nda s;u2t 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 gmm)/-3vtb y u+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 abs gymt b3-/u)vmolute 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 +2e, yv*e/9ogjrvm/3+l i qbdpgk*3 g8tv0b).mqc 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 un ,*1 05 5m)a/au+jshsktdilye 7errto place three charges, each of 2.0 mC, at the corners of 5lr1 hu ,atnseka7ym)+sjur/i0d5e *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 when it is cha h ev9gczr2,p,rged to 100 ,z ,9ghc2vep rV?

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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 area qui am0euc026c6ck 7u $0.50 \; m^{2}$ 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 are separa hp 8/77uquubdted by 0.050 mm. If the capacitance is 17.3 pF, what is the plate area?udp7b h7u/qu 8

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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 has7 l gxoxa1zo9y 4gpj,f8 p1,hs 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 csvcfxhn3 p+ zy4,0.d cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, wha3.,0dh n+y4vzcfc sxp t 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 thi/ n3*jp 2xw3dbapu,n h9;czh e battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flw3nc uhj2zx9ia, bn * p/dhp3;ows 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 ener5uq p3fq 1avm:j5t*qbr,3 yjxgy is stored in the capacixjqu3m3jp1ry : q vab55*t ,qftor?

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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 energy stored in the *x. pdgt0zq)8zvtla 6cyti (/ capacitor?t8tpg)6la v dt.zx* i0z/qcy(

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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 l( xn/p/g;w o lz/t9hnplates of a capacitor when it is connected to a 12.0-V battery. How much work was done in chahzo 9w;//n glxt(npl /rging 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 s.cs fz.f isu,1o 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 ih).uic: g1k5bx h6hjplates 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 capwmxe 85v w-c7kacitor 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 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 plates oed2jk+hbc2p+ /7 d qrgf 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 constructed with (0ca+/ muvcdu5h p0-b tye8qdplate 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 constructetey i 2,le5c6od 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 connecte;cid3o wmqoxp(0 vkv4 0;zws 8d to a 50-V battery and becomes fully charged. The battery is removed and a sloz mvxpwc0 8qo 4kvwd is(03;;ab 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 batten+h. ,x9,)g uywzzohyry 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 n)hyx+g,9h .y,u zzow across the capacitor's plates after the slab is inserted?

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