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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 not a veckw y *4eu-v/l.ed:uqrin m0a;4wj:x n tor?

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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 9fqgf ye 5nxs+l(u/9pa

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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 surroundings. Obje)6uc(a .xxu: sq e)aoact A has a net charge of exce6aou)(a xsqe:)ax c.uss 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 direziik0/a4 t) im xykb2)dlk+.dmm -7re ction 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 movi7rp-pqgc/is eh-a amm d; ,1 y*,blu2gng in 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 holl 1h;h)prcbyv-( jw d3bky:a)pow 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 acck*s nue0i+ 2)qrzkmfcx **y5delerated from rest to a speed v by a 500 V potential difference. If the poten0kqn rfc* )i5duyz 2exs+* *mktial 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 s-xj r,, k1ou+ nol4 ozp (vls5a(d)imv-an .wname 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 l(jvsr ,9y*a4 uh(onimoved from point A to point B along an equipotential surfacejl4as,( y*(i ovn hu9r.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surqd.zoib4k7tx s i . tr(/5mj1xr5r-moface must 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 equal tovg8:ivi j1 6xde +ll(i that on the electron as a result of moving through a potential difference of one vol :+li1i8xv6lvj (gei dt 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 k frgmw/- fejku8;.0l 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 corresx(ubmexr ct2kh1,f483(to+ vr v mi,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 2.04ds1f( (f8*xni4 k:tov fzwq k m from a positive point charge is 100 V. What is the absolute potential 4.0 mf(f fsxk(ik w4d8nz1: q4 tov* 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 atqq; z0fsvh ()-8a)w5 abgpft distance of 2.0 m from a negative point charge is -100 V. What is the w;)fqzvgqh bpatt)a ( f5 s08-absolute 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 potenti1h(4ww akn s7pm h:7azal at the exact 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 po wpna h1 sk7z7wh(4:matential 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 center of a u; na4(fjr i:vsquare is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute poifvjn(u:a4 r ;tential 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 s)oo6tnmjcyskrnm( 4 kyin0,6 7+j w2consist 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 ut930.s lr6 -e;uflovplyojwv772zg is 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 every rew3h2)mowspay+w yfa t87a1c( spect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger onc2( wwp awoayh7)ysm3 tf1a8+e 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 area ofw c;p)pzk)u3d-ci1y ga6yy2 f the plates is douid f ))gz;pyw1akupc 2c yy63-bled 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 is imaqj.gr- clwsw5 n8t0j8 56lremoved. The plates are immediately pulled apart. (With the battery disconnected, the amoug 0wcwianj m6qj85 rt8-l.5slnt 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 capacppc+n ,xax)k0k: w9hz itor is weakened, the capacitanck,n0xa+h: 9xpz) wk cpe 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 areg;gh4a ng+a)yba uj 3tb:7n, h)ooq/e maintained with constant voltage by a battery as they are pulled apart. During this process, the amount eh+o,))batona4ygqu; :g/j7ah3 g nb 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 lx;4p9 j2zm a+hrj4bcm8wl4 qmaintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the elec+m;4 ja4q 42pmlc8h9zxw rjlbtric 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 dielectric materi;y hl e:l9piy84 dl0vnsu .bg(al between the plates of a capalv08g9h eyd b4(n:;uyl s.lp icitor.
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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 plaas06u (6)n vs6 mf0b-g aek7j):jps bsu1jgc eced between the plates of a capacitor. What happens to the capacitabs1eaeasbu p:s) 60ms nucv6j-0 jg67fjg k()nce?

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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 papers 3wrotq4hn-u7o)up c, n 27pnp7p8jm is placed between the plates of a capacitor holding a fixed charge. What happens to the electric fi-8nj nosu,c7 nu) mop p4 2rw7ph3pqt7eld 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.lvo h1ucmgd 8+ vft,6)0uk/ ke The capacito hk6kme0v fvt)g1 uo,c8u/+ldr 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 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 e5u.;o9f i,getftnrf)y1 3 yz a capacitor holding a constant charge causes the energy stored in that capacitor to1z5 t fuoe f,r);3fiy teng.y9

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the voltage ac2y+vj86y :pfvwmw ll 9b-;vvg ross a given capacitor causes the energy stored in that capafjw6l 8 bw;9vy+lm-:y pvv2v gcitor 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.3bt5r 4 xj.- ns1nsjtv What is the potentiaxn5 sjvnrt 1bst j43-.l 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 A, where the potential isfi2;/90 n xebmbf+iwn -50 V, to point B, where the potential is +50 V,w/fn2be0mb9ni ix +f; 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;h /:y z0ryesl electric potential difference of 500 V. What is y :r/ey z0lsh;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 accelerated through an electrf9-o /bw p(rjkyjhg6)ic potential difference of 500 V. What is the speed ofh-k ypr()6w b 9f/gjjo 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 falab0 +uaku(b*hh1 l;nijplx-o v7rg/.ls through a potential difference of 1200 V. What speed does it acquiregr1*a ubvli /k hp ;xouhn7a+l b(.0j-?

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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 icktt+zt fw,+) n 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 acce7;wjwg6j i 4eklerated through a potential difference of 500 V. What is the velocity of the electron afti;jwk7g6 4wj eerward?

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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 mCbv8 ,zshd+*fn . The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0h*s vzb,+8d fn 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 bev )m- wp:mk 3awpy,*zvtween two parallel metal plates separated by 1.0 mm. What is the electric field bv,ymw:z pm ak*vp )w-3etween 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 dz zj qn8h):5.p p0ohxue.prz4irected parallel to the +x axis. If the potential at x = 5.0 m rph xop:)e h05pz n.z j4.u8zqis 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 electv/ i1cft:9;d jgg s4eqric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the vjtg v4id ;cse g9/q1:foltage 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 of an electric field of magni 15gcpgd0 x.py9 0fsrrs3iy3jtude 3.0 V/m. What is the change in kinetic energy of t s03xsi frdgyg3rp1.c059yjphe 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 to1 x/tqzr ,l,a x 7.h ryk9q:vsh)+qynxk:ltc7 a 12-V battery. An electron released from rest at a location 0.10 m from the negative pc s 1va9. 7 zqrlq7k/t)htxxq+ ,kh:: yn,ryxllate. 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 bat 3vf,6ys 7ssgktery. An electron released from rest at a location 0.10 m from the negative plate. When the electronfs g76kv s,3sy 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 a8 iicrryc)3qg+(bm ( y 12-V battery. An electron released from rest at a location 0.10 m frogb +i3qr () 8yic(cmyrm 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 +w68ls(l. r vc*xn elkvoltage 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+x*l8re .c ks l6lv(nw?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform electri./k2qs m)h0 2vxnbh:lk (4p (jloa y24szdopqc field of 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 of tho0./k plk 242b:z a)lqoys(xnhsvjq 2p(4m dhat 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 acquire a kgyr3 6i.3f n++ lrxc ytsni8n4inx yiny.rclr8tn3+ 6 g4nisf3+etic 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 at14unorj) z*td,4r + h nwdk:ctw;md2n 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 jokj0.wu(i +hpkfn+uvyw z*/ p ;3uq1are at the ends of a meter stick. Find the electrical potentialy(k wnpj+;quz.i1ojfh03vu+k wpu /* 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 -2k xxk,gu2i w4nn:)ly;/rm2u7dxmu l2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric p/ 2dl72lm ux ;2gkym ,nu:xkxnr4ui) wotential 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/k9 irjm4cx9yop2v6u (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 e4u/j2pr i ov9kmxc96 ylectric 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 (3.0 m, 0). If the potnjso * /nb5y*3hkpamc//7tsu ential is taken to be zero at infint5jk/ ys3b/ho/nu** sam7 pncity, 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 ofc1cok3:za7yu1gp+ 7hsk2j t a sides a and b. What is the potential at the center of the rectangle if q + khkjgz3 1yutc7 pa 7soa1:c2= 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 +r3ys).;ckq)lb ex et;4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges erc k.x3sqe)tb y; l);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 (cj:. rkdia *d3i .; mezev2oj-g hb6r;sharge +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 neces ,ruxyl; w ut 3x/ m;4(ic8yuc)po7dunsary to place three charges, each of 2.0 mC, at the corners of an equilateral triangle o8cnr7i(u;y; umx tc3) puod,l/x w4 uyf 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 caa3cyi h44;kv kpacitor when it is charged to 100 Vv 3k;a44hycki?

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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 areoau yv2h0vz;6-z b ;onk7 3ikya $0.50 \; m^{2}$ 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 filla+73mvj jzqj/ ed with air, and the plates are separated by 0.050 mm. If the capacitanc /vm jjq+7jza3e is 17.3 pF, what is the 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 platesy0++- ndmvycc 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 cap,4tnsarw t*y )m(u m6bacitor has a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the highers,(brm*)nuyt64 a mtw 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 capacitd9+rpu8p8yc o 9 u1p(zsfer0por is connected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5).8e+p9ry 1up furdc( s98 ozp0p 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 energy i8klu4 , tw6h.v;(-ovpxy wy 1lcq(lep s stored in the capa; ywe l(-8l6utc(ywovhvl1k,.p x 4qpcitor?

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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. Wha9s gey 463uv9z*3ii4pb vbpuil.b,;ine-bjrt is the energy stored in the capacitor?4v*n ii ebb ,.i6u ri33elsyp guz4bv b;-9p9j

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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 whenfrbk3y6ghaiwb9mm9j*3 .8 2fv vw/ xb it is connected to a 1w2i 8mxwk fm9g.y6r a *3bhvvb 9f3j/b2.0-V 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 is charged so thahyo/k0v/mo(vh w wr:/ t 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 plate k(x32g6 zwu /uvovu .prbp7n9s 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 platveja wkqjfjx6-1 t /33es 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 capacitojozj9/9 ek .e5t c;ktbr 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 capw47khxngdc.8 fd do6- acitor 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 capacitor is constructed with plate 1px(u0mwf wr 0f/o t2narea 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)hevfq p3 *dm( becomes fully charged. The battery is removed and a slab of dielectm pq(v3hdf*e)ric 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 50-6vz6)c 9cbaln/ly x9hV battery 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 across the capacitor's plates aftercnya6z6 x9hc)9 /bvll the slab is inserted?

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