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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 v9 )lr;h*si5 hy*wjkm8 okyy-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 coulomb is .zx oe-lmk uo:g()m :cy)6tbjpcd:+b 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 fc h 5(1noqar4*hcmv w0rom their surroundings. Object A has a net charge of excess electrons. Object B is grounded.m r 5v0c(n4o h1cawh*q 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 direction of thel.dyhyp (z b*lnvpg 2h604p:p:( z ell 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 ivapn+5 b)d3l 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 conducting l( ay:y (fbig-a,d.jasphere. 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 rest to a speed v by a 5 -csch.ucj1v 4.b-p tb00 V potential difference. If the potential diffuc cv.b-.4hj t1ps-cb erence 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 potential is referred to 2d 2bl-q*cf,- i/3ietqxf *q,a4 iqrz aszw8was

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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 ajx nr o 1ijfp.8,d1b;vlong an equipotential surface.fj8 ;j1d1 ibov, p.rnx

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must0h3nojge/p n4 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 par ien53q f brjm2.,ut(iticle carrying a charge equal to that on the electron as a result of moving through a potential difference of one vj5r3tbm,fq. (n2iue iolt 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 om;h9, ow;sim1hgd+j m f

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspon wuoj./ :vjk*6qef v;vds 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 dista7klhan)1v f*uzum nb/*b4su5 l*ud0ance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away fu*bhn ansmb ud 7ul*a5 u4z*lk0)f/1vrom 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 negativea+ 4rq y+rz0qcdb;w0 d point charge is -1qy0q4 d0c; r+ r+zbdwa00 V. What is the 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 potential at the exact center of a square is 3.0 os8bf 6r1qsb oepwoo:7 f.h;vf (w5 2fV when a charge of +Q is locf;ffw.6( 2pwv 7o1hqobeo58bro:fss ated at 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 center of a square is 3.0 V when a charge )2 w 1vqnjwlc1of +Q is located at one of the square's corners. w1 w c1qj2v)nlWhat 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 consist of t6/ky 9 rjbu7nswo 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 is8.d 4l/mv5lq mzpb*rowbh.e5z*p 8uo 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 respect exn9i*o.znxz:g nc b3 u3cept that one has twice the plate area of the other. If the smaller capacitor has capacitanug x3nzobz n9i3n.c: *ce 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 the06ws ao0zqtlq,8om9 q area of the plates is doubled and the distance between the plates is 8, az0qwl69qo0sqotm 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 rh1heg60mej b 8emoved. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge jg bhe8e m6h10on 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 is weakened, thq7(8wk t4j roce capat7c wor(kj8 q4citance 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 areon;ir.2/hlo2w ln y3d maintained with constant voltage by a battery as they are pulled apart. During this procesh/don . y2ol3l i2;rwns, 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-platcrgtwe+sxodlb42 -b//lj )+de capacitor are maintained with constant voltage by a bt wrol/x4-l /2)dbe+ sdb cj+gattery 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 dielectric materi70vs ut90zmft8) kzc3 td, dmual between the plates of a capacitorttm zk f0 ut7)u0 sv,83z9cddm.
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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 plateshu u4.8 h3d 5kx-l5kza;vpyk p of a capacitor. What happens to the capacitancea4.3;uh kd 8zykxp lu55-pkv h?

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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 plates of a capacitor fwjhdka3p4 7 +hokf3hp4 7w+jad 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 battery and becomes fully chj4+ *f- pmty++u3zx4n3mlip jupcui+ arged. 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 tfmjcu 3n+-putujyip3x m p+i44+l+z*his 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 capftzeq ;t : u8ks9b8vf4acitor holding a constant charge causes the energy stored in that capacitor tokf; eb98 :zvu4qtf8ts

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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 causesd xn72; )0n urhiyi+qh the energy stored in that cainnx+u dy07q)h2i hr; pacitor 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. Whl. lyhd, *c73* e8:tjuid xey3ypc8di at is the potential difference between points A any,8d8je pyth* ec.cx*3ld7 ly : iud3id 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 (j ul/lnjbf)- potential is -50 V,u j-)llfnj (b/ to point B, where 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 ma , /w)tzo)rwrest, is accelerated through an electric potential difference of 500 /,zwwr o))tam 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 accelerated thqc-op/,m+z8 kek8i ur8u pblqz jo2 6;rough an electric potential difference of 500 V. What is the speed u cp8p,ilkmkb6 u rje+;2-zqo8o8/zq 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 7xm nwzu357 g f.rypsql;tyzd0/ -b2fthrough a potential difference of 1200 V. What speed does it xyw7 ;3 fm -us7n0pbrzlq5ydgft/.2 z 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 xfd 3glgs38zfiy5: xjx; /x r6V 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 potential difference of 500 V.;yx-b)pb1scet8 am -8m v,j av What is thcv s ,eb-xyvt8-)jm aabp;81me 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 c3h ihk.j,zwo4culmvu2*2e / tqs4)c charge of 20 mC. The object is accelerated from rest through a potential di2uwkev tl2z) /*shc,i o4jmu4 cchq.3 fference, and afterward the ball is moving 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 el/o1on-igz 39)jc fg7kz,gxhkx:a 7 dxectrical potential difference between two parallel metal plates se,fgg137x z ai/7c:- 9khoxnd)gjkoz xparated 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, wi pfbk )(..o48u o6u gk:gidwezth a magnitude of 500 V/m, is directed parallel to the +x axis. If the g u.p(keiz8fwb6 ko :du4go). 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 zb;d1mf k nspf-y+n/650 N/C directed 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 m directly west of that poinm kn;6+/ ffzbn dp1ys-t?

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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 mags d:g8yakj,w yh (6( tmg9cq4wnitude 3.0 V/m. What is the change in kinetic ene6h(tadj( :skyg 9gwqy, c 84mwrgy 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 c 3x 8 ckl)jh.tyo*wrknnd 2f4sk2ug5*onnected 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 from the positive plate, what is the potential difference between the initial and final pointso) 2g r8f x*n*njsdcl. ktuwky3k524h ?

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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 bdb;r c-r2rd g6attery. 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 plateg6ddbrr;r c2- , 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 12-V batem7,h*)hf9gtbj)y fwtery. An electron released from rest at a location 0.10 m from the negative plate. When the elebfhgw * yh ))m97e,jtfctron 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 fianu ddd( ke1w+ azz0pg36 y,:meld of 50 N/C directed toward the east. If the voltage measured relative to ground at+dk:dgmua0azd3y , z6nw (1ep 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 obwxx03 bf7d w4xgxn 3x0 dt5+mf 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 30x7b4w 5xm bxdw0xtf+x3dg nthe 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 acquirelpulu; ) .u2az a kinetic eneuu) lpluz2.a; rgy (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 a distanceje(y.q i;qj*w cj1 )jbtl+ye o*a n-i* 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,sp styfq69k6( p )x9cmfqa +t.d jf+o m.esn7 at the ends of a meter stick. Find the electrical potential for the center of thpx6s9qn.otc+q6j( +d) y tk9 ,.f7sfsmam f epe 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; bejr:q+ g *8agnpv(c m, 0). If the potential is taken to be zero at infinity, what8 j ;(egp cvq*rga+n:b 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) and a -2.0-nC charge is at (3.0 m, 0). If- rdgm ; x6/lzff sg-:9lq(uga the potential is taken to be zero at infinity, what is the electric6g;x (rgg z/ fldqa-m -uf:9ls 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 th4yisb mj3 n:)h/lyl0b e potential is taken to b ym3yjlh0/:)s4bnl bie 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 azb- yzbt),h -ft the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.tzf-yh)b,bz- 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. ,ima0jt+ukwdp/l 9w. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other .+9pk /lmiu0,wjatd w 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 (charge +* xc27qxnt k;i2e, 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 e jyn hoithk(aq;92t 4x9,l r-corners of an eqk 2li rxt(h e,ajthno9y q;-94uilateral 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: w5htkj9* rim 2.0-mF capacitor when it is charged to 100 V?wkmt:i9j5r* h

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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 o vb*saf 5 ,wnk9(eaztn81pd.y f 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 separated5 867w 8dj .mixr9ll7camxvmq by 0.050 mm. If the capacitanceac 8 qdm6jvl95mx im87w7l. rx 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 plates of area y3+8 h;asklyw n17u68hvheqf $0.20 \; m^{2}$ 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 ls52)xz73 2 cmiai mjmof 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potentiamzxii a3sm7c2 jl25m)l, 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 connected across a 100-V battery. After the battk,lkt 4fj+t-b.qcqm :i*an68n.+z gtwt 5 nprery fully cha p g.nqk.*+ifzb6wr tatmknt:5-lc+8jtq ,4n rges 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 placed :brdus 36x muibje x8b1y6(;i on a 15 mF capacitor. How much energy is stored in the capa;mi 8e :3uxydb(xs1bbuj6 ir6 citor?

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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 thkcs25 akr 3vc,e energy stored in the capacitoar,c 2v53skkcr?

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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 ca 8/;x9 99aa*fcacdt uob+r pbupacitor when it is connected to a 12.0-V bat99u8 */px9bc ca af rda+bou;ttery. 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 s 22ps2u5 ddkwao 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 o4wu7wkx4dl5aq 1t-j2 sy q6hvf 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 platx pip8dq: d.u+es 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 of ar)bn4jq kt p5il.dll +o2i*-p . eke.xjea $1.5 \times 10^{-4} \; m^{2}$ 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 ,5tbl/t o;zeu nc2lzp -sl0)o$0.40 \; m^{2}$ 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 pq)b er c* zhqoz 0ly0*7uu rqi5o329eof $0.40 \; m^{2}$ 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 v5hbjspj92c 6-V battery and becomes fully charged. The battery is removed and a slavj6b2 cshj5p9b 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 battery and becomes fullyrx4qu7k ino.,a4z 564fkjzf e charged. The battery is remova,o kkqr 4fzjx. zne65i44 7fued 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 after the slab is inserted?

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