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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 isq.+ 7ljc9hc e ;m8 63suc:zfg gkzp;so 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 coulombe 0yz r+mgeyf;4wd*c zn4o53e 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 from their ie- 4 2ola.dz9tl ox6msurroundings. Object A has a net charge of excesl6do942 xt meao i-zl.s 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 in the directio*t2ywh -kgnp 1n 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 oppo:a bhtx;3f+a tsite 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 conducting sphere. Thjc v5 -gd;cw)vey

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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 speed v by a 8km1td7 bbqogi .w 1 aa qjn4h31+qct:500 V potential differbqqgq. b tco:81a nh7t1 aj1m3w 4id+kence. 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 pointsnd;:7r lmp qc+ 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 pob+3rye -qhs0yt r(ou -1s( zw/ cnjc8qint B along an equipotential surface.s-r/ntzqq08y(w1bcc (s h eo r+ ujy3-

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mp1 kbv7tiy b;-)c wx8ak ,mm4lust 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 partic+se :d6n /k i(zdzhb+ele carrying a charge equal to that on the electron as a result o skhbz ei+6:+/ednd(z f 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 uni:zz+b a e992dnhlzt5it 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 corr:gd2 hq(; sdx-lzoym *na0f+eesponds 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 4*) ea;t3yru zdt*qhcm from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the h tr y3aq ez*4ct)ud*;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 y;aegm+z (bxa 7 v(u/aof 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same point ch+e7xm;gaa z a (yv/b(uarge?

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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 cene 8t)3v5h1yughpt sv7ter 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 cen1gs)v heu8y57t hpvt3ter 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 ce(m3kxq)mh -c s1 5ovrwnter of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is mw53)s q-o ckmvrxh1(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 cawb8l 7d3g/ n(u2.wsjv6rwy uonsist 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 g3d6e*hwh )pka

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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 everyz6y9wzltd(+oa+3 8c 2u 6iidwm1b f yb respect except that one has twice the plate area of the other. If the smaller capacit z3f(dm2a i9c18l6 bi6oyby+zw+u dtwor 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 th)gq nsyrle s2j) pn13+e area of the plates is doubled and the distance between the plates is halved, what is the new ca23psr+n) ygnjq1) l espacitance?

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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 tv )t yl*;v62mnzdm g2khen is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains consv6vygt l; *)2nm mz2kdtant.) 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 bbx i:ot3ad;bdu)z ;) capacitor is weakened, the capacitance of that capacitoru;3tb): id boxz b;)da

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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 cap 2t0omytx2wmagom/j + c(1r 6kacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the jm(t mtx+gmw2o0a/cry o6k12 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-pl,c17it agudp h/eud1y57(0 exi eyaz* ate capacitor are maintained with constant voltage by a battery uz05xtdca1p7iheu, g* eai( y/e1 d7yas 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 dielec(vcy zfn7 3 a3k*bfuaolk :4x4tric material between the plates of a capaci n3c(y :k4f lxaobav*4fz7 u3ktor.
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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 z7e* fvtf02 bncapacitor. What happens to the capa2fb0ztv 7efn*citance?

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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 thi + vcvpt0 a://n u:0z8kyyzaq27xvzve plates of a capacitor ho0vzxazv:0pqyv/ iyv2 tn z:87 cka/u+lding a fixed 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 bat6,j4p apoaq4qtery and becomes fully charged. The capacitor is then q,6qp o4jp 4aadisconnected, 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 a capacitor hol4 ynh. berl-aprg-5i8ding a constant charge causes the energy stored in that capacitor ya.ri-84b - erng5h plto

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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 capbhvho+m4j7 +r e1 vh3lacitor causes the energy stored in that capacij mehrb+13 vh+vh47lo tor 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 C of charge from point A to point B. W / 13zw8; rv. lupnm9ejsmplk3pg n+i;hat is the potential difference between poinw.3lv/p nnm1i9ms z8eg lr+k;; jupp3ts 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 A, where thchwz;yxd 3 hn,(l3* nbe potential is -50 V, to point B, where th3(yzl c ;n*nw3 xh,dhbe 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 throu6ai9)lm*7r4y0 fy+ l:b wcygc)iggdh gh an electric potential difference of 50m0)g*y il7gwg:l)hia dyc6+cryb f94 0 V. 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 accel,xb9uu t * sb1rdu5p(merated through an electric potential difference of 500 V. What is trpd(s9b5bt,x umu u 1*he 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 pote :;vs86dha92tmbtxc;m j f9ij ntial difference of 1200 V. What speed does ;m t9 mf2sbh :x a;98cd6jtjviit 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:-tskd- t, ory 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 accelerated through a potenti3cx.cg .isq0y8o oe8w95ogdtal difference of 500 V. What is the velocity of qw ioe5s3.x tyo8o0 cg8cd9g.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 mCx9cjzgfkhu -;sk y d.;9( +.;rcetnmg. The object is accelerated from rest through a potential difference, and afterward the ball is mgesy xc z. rm(;hd;ft.gk;c -+9knu9joving 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 electrical potential difference .g6e9qg-f8hvt ;fzk* wqujr7qb 4dy3between two parallel metal plates separatz-6f gg3qefk4;qt9 dqbv 8*y7 . hjurwed by 1.0 mm. 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, with a magnitude of 500 V/m, i1i 42q 96rthwlo4qeqy(z/ww js directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is9t 6wqr/wje(hl1zyq 4 o w2q4i 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 towardq; ;6v g(sko 9it:nejm the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.si;q g;v 6o:t9e j(nmk0 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 electric field of magnituf 429s1xy vxabde 3.0 V/m. What is the change in kinetic enys9b4x21fv xaergy 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, sepa19 sitf(l7whg rated 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 (ilw 7shgt 91fa 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, ar-l0afqez :f5sk (*wk5k./;k s(qdagmha r5 lze connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. Whe5gw :zk* (aekqlf s -af5zl/a5(s0r h;dq .mkkn 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 12vv l6uc6q h0n:-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 nv60chulqv :6 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 umkg,( af6kav2.7etz directed toward the east. If the voltage measured relative to ground at a given point kazafevgmt (27 6.,uk 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 dirt(uw) o6bw /ahected 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 of ttaho w6/bwu() hat 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 throub)vzggtdz 69ab 51*wegh a potential difference of 12 V, it will acquire a kinetic energy (in the absence of fricti1zw dbe5 zg9t)ga 6vb*on) 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 potentialzjsrc .px14f/ 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 at the ends of a meter stick. Find the electrical pote -lam qx; a/esv70g8tjy8jf/:sk lq+intial for the center of the meter qa jta/08/x ;mq- g+sjleviy7l k8s: fstick.

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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, 0x+ c)ezb mh+ticp3t )*). If the potential is taken to be z+c bt+ 3ite )m)zcxhp*ero at infinity, 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 at (0, 0) drzu c:;2ji*2tbj8 (b2vyok a 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 electric potential ener 82bat bkdzu2jc vj;ry2i( *:ogy 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:e e 27sbn2svh 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 charge from infinity teseb7v:2h ns2 o 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 cow-x vl4s82oj3 r5g93 :ih a5qeogddtg rners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, ho-jq8g9v 25gsi:4drgelto a3xw5d 3 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 oihpp3vc * u7tty)j( ,ef +4.0 mC are placed in two diagonally oppo3 ,jh c(vu*ip tpt)7eysite corners. In the other two corners are placed charges of +3.0 mC and -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 (charxi y jpw*l a-.(i0mmk ,tip5.ilaf)e1 ge +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 place three charges, each of 2.0 mC, at the corn/a -9ww zu/p 5odd9gsiers of an equilateral triangle of side iwwd-/g 5uo/p9 asdz 92.0 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 whebfhlt //t5np6*u b x 7d-4sknrn it is charged to 100 V?dxln -4tt/bbrup*5/s hnk 7f6

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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: v.ic,t aj( 5fx4lacor 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 are separa 0gcsvuh o3*y;/:v koited by 0.050 mm. If the capacitance is 17.3 pF, what is the plate a ig0/uo skvv: ;oy*ch3rea?

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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 areo9 ocivux55e0ry9h*b1 z7tb ea $0.20 \; m^{2}$ 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 potedk5snp z0t fqrxm -97+ntial difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric fif xpmztdsq57 nr9+0 k-eld 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 tc-y7ez3h: jevbl0:ky ;q:n tehe battery fully charge3y t;:7:v jb: ln-e0zyheecqks 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 nv6-pyx c5+,6wnk q 4np,ptpaplaced on a 15 mF capacitor. How much energy is stored in the capacitorxk-+, y,np 66npqan54 tp vpwc?

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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 ca 2hkzjrv6cdyxg(l .7; pac(yz76h jr2vg;lcd k. xitor?

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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 connected to(v 7px:9n or8swazo8 p a 12.0-V battery. How muc 8a9pownx: v(p or8z7sh 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 it s,lj t 8vu+ h;rz1jo.tptores $2.0 \times 10^{-3} \; J$ 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 consi h 4q)p oc0 cmte6 g)cnw*rl820tcmt*csts 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 plates of areu *vmc)px h ax/65 khpnn4dv(;a $1.5 \times 10^{-4} \; m^{2}$ 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 capacidh-igc3h f ty+*sc2k: tor 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 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 plate area of vjkf (pr )rydy9r q js1,4y;;b$0.40 \; m^{2}$ 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 gu/3ue) 3dvrn+rs:o+vi n7abarea 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 02 z9xk4wiesvc)y9cko* ph7 pconnected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that4kcv9*hisz2 co 7wy p pk0e9)x 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 batteryszm:has29 a/r 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 z/a2: ha9sms rdielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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