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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://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://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 nouq1:tx - 1g5awt(hhy:f1z ky et 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 1lb1raoe jg -rlk 1j)5is 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 th:giurs ;2m phlv k;a/7eir surroundings. Object A has a net charge of excess electrons. Object B is grounded. Whhi2 m;urvg7s: la;p/kich 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 direction of the o3 s,sta3zj e(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 opposite to the electric fieldiq0l1 0 ow- sgk1 nf8rf9x2ri3ojrsr7

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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 6jexpk5ge 6pqsgy2+ 9hollow 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 acceler)q/:ka n;)3cppu r zv*hikze8ated from rest to a speed v by a 500 V potential dzr)p3k :ci;8) upkzvnh*aeq/ ifference. If 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 all points are at the same potentia7((xb 0v5 8 /c)f +pg)piuisxdszrvb sl 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 mj*nggdn-s0bf ;t+b d(oved from point A to point B along an equipotential surfac t(dd*fb0bngg+ns ;-je.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mu.lau1 w j48oxjst 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 charge equaluk42 r6rudq( )uco,l o to that on the electron as a result of moving throughu4lku rcor2)q( du, 6o 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 un0 r28hmobm5)gzlgra s 5a 66gsit 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 corresponda9ry (a.,viy1 bc*cc ks 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 charge mr (:prt t2v7yis 100 V. What is the absolute potential 4.0 m away from the same poinrvt : ty7(rmp2t 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 dlxrg*u f1jm2 eow)w,*7e.l anistance of 2.0 m from a negative point charge is -100 V. What is the absolute potenting2ull1am o,e wje*)rf7 x*w.al 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 chal7t dte.yo5:wfx24 vorge 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 o5ode o:.tl2 7 ftvxwy4ther 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 a squar-b fnwhd qa:2+e 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'-nw 2da:qb+fhs 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 charge dc ri9vk2me2 j8b89uss 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 a vd4jn9rpoi t)zxia) 6108nzd

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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 e (7x syctohj:hvk*edfmu :59 .xcept that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger oxm sj(h:oke.yuc7 hf9*v5: td ne 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 5ke2s gsf0 4nnx*eqo j dz,69qof C. If the area of the plates is doubled and the distance between the plates is halved, what is the new capaci5nzqno e9k0qdf246s ,xs*jegtance?

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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 paralleer ry,4q-5xh7v ggj7p/r cr7el-plate capacitor fully and then is removed. The plates are immediately 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 b7 ,/ryeh7r x-gqrcr4vj5gpe7eing 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 betweeckuy. *:-jv ph1at ieuf--+nfn the plates of a given capacitor is weakened, the capacitancfa *ufve--kpj+.tn1h: - yucie 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 paral ei+uwr, :phuns74 )hmlel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amoun4re,ph su)7 w:mihun+t 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 parallew+kw uf8ucq6dp2u8 vigk8 9i,l-plate capacitor are maintained with constant voltage by a battery idkw uu+q w886gfp9 ,cvu i82kas 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 3cpe1jb-x zi/( / rl7,ojvqoa a dielectric material between the plates of a capj v1x o-e/z( icj3lar/o7p q,bacitor.
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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 placfr/i4l yenx.01 dgy1ged between the plates of a capacitor. What happens to the capacitanc1 ixg/4rgned. yyfl01e?

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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 plate- yqwjz 7xp796qz eo-zs of a capacitor holding a fixed c o w7zpx7j-9zqz6y-qeharge. 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 i(yba h+f*8vft ik/pzkjm ;,/r s connected to a battery and becomes 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 capacitor +ifk hk(a,yp*8 bt/m zfj;vr /has

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本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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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 cauy55rbg t/ ho3gses the energy stored in that capacitor thbogt 35y5rg/o

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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 the energy stored ofd 6h6tdc+33 ljwj56y;vtik in that capacito 6fv36jk35; t ilydch+wdo6 tjr 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 8tm 6xgwiik2f-/zelpkp8-0h 10 C of charge from point A to point B. What is the potential difference between points A anmi8 zf8/w 0-6lp ghekxitp -2kd 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 th/r2 23yx12ejxxyhi v ve potential is -50 V, to point B, where1xh223v 2erv yjyxix/ 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 accelera) ,hfd qgavzur(2,d+ o:uhexweg n+* 8ted through an electric potential difference of 500 V. What is the kinetic energy vo8h g:2, q*+n ue gux+zrhe(,f)wddaof 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 accenu*6;je p rb;jlerated through an electric potential differr6 p ujjb*;ne;ence 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 o2yovlxvgq3 nf1j/ 7ncgz6f0+f 1200 V. What speed d +c0yo2vnfqx 1lvj67gfg/n3zoes 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 do in 0)98m pri xo4v zu8c:jmk hq,dmoving $8.5 \times 10^{18} \; electrons$?

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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 difference4/ c:dhbi go-t)p2 wjn of 500 V. Wh-t:d /nwpb)hicg42ojat is 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 +.g*uzci;o9ex.i p8 ole4ghj from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the o +4je*lo iz gupg;8 .ec.ixh9potential 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 nk2(4 n vyj wq3nar-x0c1g0szpotential difference between two parallel metal plates separated by 1.0 mm. What is the electric field betrnnx(3an4g0wzcyj-v1qs02 k ween 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 parallel to .puc5trpkq u v7f:1*o the +x axis. If *7q.vt upcuk5r fpo1 :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 towarli5)z 3 lu6svd +:mlqzd the east. If the voltage zim+lsl 65zl v:uq)3dmeasured relative 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 direction -qj sc2vy( p,:a.+csme zc qj8of an electric field of magnitude 3.0 V/m.aqv.c8 sj,cq(e2 +:syc j- pzm 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 connected to a 8 xzf7x6tq7z3ykn cu512-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 znctk57q87z3x 6 fyux 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 ba) vn - v yy9ussh0y5-o.kdc3awttery. 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 tdyh u s0y--3.vacsown 5)9kvy he 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 0.20na +: sfuvzrgq2v8hnl: 24 )bj m, are connected to a 12-V battery. An electron released from rrhnqf jn z:)ubvg 8 :l42va2+sest 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 t,co( 3x4bcsxg9wmy ez y wys5g:/23b joward the east. If the voltsm43,j9 w o bz:cgxc3g ysb/w2ex(y5 yage 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/Cd(s us og.l6a8ju5xjhxb-8y6 directed toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is th6a86.oy8d5ubhuj -jl x g sxs(e 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 differezx*0j(y6o .rhqf wwcf,k(c:ence of 12 V, it will acquire a kin : x.okwf,e*(ry6c (j 0hfqczwetic energy (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 5i -m+du ta1mva 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 at the ends of a meter stickn; rfy / l6zr*3hgbjv kh12b0r. Find the electrical potentifzr ; hg/60bk lrynvbj*h12r3al 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 at (3.0 m, 0). 02mcelgn e7t(o/ai( iIf the potential is taken to be zero at infinity, what is the electric potential atma/ 0i2o(g(cteel 7 in 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 aj789wmc:e e:6 imm zftt (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 electr9:tcf7 86j emzi:e mmwic 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 asun 6sw/:* e(bfp*aay -2.0-nC charge is at (3.0 m, 0). If the potential is taken /(6yaewnsp u*f:ab s* to be zero at infinity, what is the work required to bring a 1.0-nC charge 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 placed at the corners of a rectangle of sidheqpmwai++2 y8 / ;ojw f:r/ijes a and b. What isfwq ea m r/;+po+/ 8yjw:hij2i 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 e,3jvx +4sr3py4iklhg5;np tmC 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 poten+4syk hij rg,l xp4;pn3tev 35tial 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, massuu3l.,(h o txf $6.64 \times 10^{-27} \; kg$) 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 cj+tguvmtvb td 3c1:6,*mbcruo a1 9 z9harges, each of 2.0 mC, at the corners of an eudatt9t19 u1zbv63g,v r :c b momc*+jquilateral 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 charged,fyq tbpv7dbbv8u2:m w l3t*- to 100 V? *bm7p2bw 3tlqtdy:uv b8-f,v

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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 ar-re,qc mt uawft+g5f.k 3e t;oh :*/njea $0.50 \; m^{2}$ 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, and5fe ltssxoakl )c n iec3u68l/s74 v/, the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the cte)sas3 /7 l5ix v encfs/lu8,4lo6k 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 of areniplswx.p(h bopqi )dm8; 0) z5gt.*ia $0.20 \; m^{2}$ 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 5.01c,d 6d*mv h 2,ehqrim ooit i:94q7mf cm. If the potential difference betwee6h q:ceim* 4 9vo1trimd,ih ,2m7dofq n the plates 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 connectsown zr8;,.u3 q 1ipx kbfn:(ded across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constq d:u.,ps f w(kxrn1nbz 83oi;ant = 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 capacitop:f2q+q :ql eqk(ge)nr. How much energy is stored in the capacitorq::(e)lf2+g pqqk nq e?

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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 acrosv9af yc gjtv3; 79t-ajs a 15 mF capacitor. What is the energy stored in the capacitor?7ytjjfvt;c9 av -ag39

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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 plfhzd:sg jx,e),( j3qyrf /6 mbates of a capacitor when it is connected to a 12.0-V,( d 3qzfj,xsjb er/h:m)fyg 6 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 isg gd)esz73 4.z nxkax; charged 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 plates o*,iyt ap v3u7vf 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 plates of area qv,z, yz k4ko)k 61mb9auln7e$1.5 \times 10^{-4} \; m^{2}$ 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 of akj-i8 ) xrjh:t -ijz1:obazl4 rea $1.5 \times 10^{-4} \; m^{2}$ 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 cong(9hrx(wm(e rstructed 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 constructed with plate area of hjnn:mx-q)bs(2wt /z$0.40 \; m^{2}$ 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 b0t 3;utcm(q*zj inro6ua9 +qjattery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space betw396ua+0q;niz(tc rmu q *otjjeen 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 anp+mv tv l//a;hd becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If t/;phm +tla/v vhe 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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