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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 i .;a/ og5uavu:a 6vrzgs 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 ii;z bz hq0*0lf/e/ qsmvky2e qsd.*h,s 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 surrouy-9-x qtcfyws0vq 5v j)1z(s pndings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher potents-qv j py9xt1vwfczq)0(ys5- ial?

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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 electo 2xjt,f*7 g*5cn8jlatzjioen+ / 81abw h9jvric 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 tohp) :prd 9rbsxxc98mv.6 goz7 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. Theyv) +jys;* )yxq+kvhhp

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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 500 V potenyzi3yd (g.io4st) s*itial difference. If the potential difference is changed to 2000 V, what will the new speed of t4ty3igy.sdo) iszi*( he 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 potendl./pto sh 5djg0mp ;+tial 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 point B along an 9n*zj m. kbay-mxr 2l/equipotential surfacebz./xmrj y9la2 *nk -m.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfacez3bs(. g1q)( xu opoxt 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 carryikculsh; :f*0qng a charge equal to that on the electron as a result of moving through a potentlsfhk:0q*u;c ial 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 u qf;pv0t/ x:dznit 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 correspoz4 nn+9x5,pxzq+3u w6k+c c-t x)hjzkpq5j t vnds 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 f1 pede ee):3.pgb* i;(cyougsrom a positive point charge is 10:sd)*pe buc.e (pg;e oe 1g3yi0 V. What is the absolute potential 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 2.0 m from a zj zbie67kplt- q (*p7rw,ad: negative point charge is -100 itqz7r( 7- lbz,daew:6pp j* kV. 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 V whe9eoam3 h 6rfjm7 9ly,;r q9ipbn a charge of +Q is located at one of the square's corners. What is the absolute pote99r39yaoj;7 m,mlfbhei6rqpntial 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 charby r0hw jdk/ c nl9rb.s)9:-czge of +Q is/brbc0rw - dj l.9k9:c)szhn y located at one of the square'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 consist of i -nn6b t+ a):wnl7veotwo 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 ihp+sdhne zhg n)58:r5s 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 c 2s )sby-w7v1zqbs7f mapacitors are identical in every respect except that one has 2b fs7zyv 7-swb s1qm)twice the plate area of the other. If the smaller capacitor 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. zye1,0:78a8ssacfzn q*z oy dIf the area of the plates is doubled and the distance between the plates izz,s0s*y e8na:1zf qda8y7c o s 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 reodx4t )4wt)/sa er ,cpmoved. 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 being separad t/atx4 4crespo)),w ted?

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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 betweteo6/d x l. fp3t8fnv.6y3j csen the plates of a given capacitor is weakened, the capacitance of tx/ flfd ctyt..jn63 soev 8p63hat 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 are maintained with constant voltage bf- fhr;v: s:zly a battery as they are pulled apart. Dhf-vl rs: ;fz:uring 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 constant volf0nb t;uqx wnoz ,2.u/tage by a battery as they are pulled2ouu; bwx0 f/tznnq., 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 o br:8-s8sxzl dielectric material between the plates of a capacitor.o r ss:8xlzb8-
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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:k0v d zs ,z3tlud9yn( plates of a capacitor. What happens to the capac kdn : t3z0l,vsduyz9(itance?

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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 placedo2z9pj6+ub- 0duos /hr.)z,gsq k drm between the plates of a capacitor holding a fixed charge. What happendr2-mds6gzh.0rsk,/pzj) 9 ouuo b+ qs 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 ;)sqlyrdjc fmu52s( 7- s5sbicharged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. Th-bj)m;cr7yf5( 2s 5 lsi dsuqse 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 the ena;+0a4lwnpjzb6 s ;y/prg or0/1 au yvergy a b/6rlpn/ouar;zg+; 1wyys0 pv0j4a 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 across a 5cpah( if n8e t*v6tx7given capacitor causes the energy stored in that capaci6i7x*he5acv 8tf(t nptor 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 108 5,wu ex+ x jm*od27t8bxwxjr C of charge from point A to point B. What is the potential difference between points A and B78tu*dwx5mrb2oe x ,+jxjwx8 ?

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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 potenti5jcj n 5anb f8)0,cvpval is -50 V, to poin0n5p nc)8,vcbj ajfv 5t 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 rest, is accelerated through an electric potential dif 9sw*p*djh 2thn; /k d:yaf/a0urhk1oference of 500 V. What is thed anatd1r9yjksfw;/ :k * ho/0hh*2p u 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 electric potential diffemw )0 otbldle7 -+2xytrence of 500 V. What m- 72x tdt llbw0)eyo+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 of 1200 V. W*;ylscv (ol)r wbw74jhat speed does it acl;* rbvc )l4ow(wyjs 7quire?

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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 id69:9ij4oxdv + ud moxn 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 ofn/ ,3udfwfzxsp179w 24 rkhh gkyp3v1brvw(( 500 V. What is the velocity of the electronhhgfb/rn(p4 2rwzw 3s1(7wpyuv3 9 x,fv1dk k 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 obq2 la,yw4-j;w do9 rtbject is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. Whatj qt b4;,r9w dy2l-awo 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 rzm j ::r,ae(w8fcui8i c0+ tadifference between two parallel metal plates separated by fewc, um0rz:ii8aj:a(tcr+8 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 field2n20x xveh tw4dixt4f-6pp / u, with a magnitude of 500 V/m, is directed parallel to the +x a2 0xet4pfw-tnpv/u 4 h2i6 xxdxis. 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 eleluddvd 1(hl( 8ctric field of 50 N/C directed toward the east. If the voltage measured relative to 18lh ddlv(d (uground 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 dikzpq9,ihw):,4h t,sz vs l0uurection of an electric field of magnitude 3.0 V/ th 4uhu0svz,kqs)z,:i, lw9pm. 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.cix2h0 -ymc8i 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 a distance 1.50 m from the positive plate, what is the potential difference between the initialx-0ih8 mc i2yc 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, senq(z pet2rk 18parated 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 a distance 0.050 m from the positive plate,(n2pz1r k q8te 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 bab:- x1d,,0jgor9 ytwmmqj/w jttery. 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, whtg,mm9: obq1 yx,j jw/dwrj 0-at 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 fi,c2lc 01k qtnbeld 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 east of the p2ck 0bnl tc,1qoint?

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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 directe-7( hy, -vdfjt-ivb9w bh pbi,6)twvrd toward the east. If the voltage measured relative to ground at twv -76y-wi-d(r9bb ,hjvt)i hv,pbfa given point in 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 diiz p5aw5554vdv 3klplfference of 12 V, it will acquire a kinetic energy 5 ik5v vpa3pz 5l5ldw4(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 lb7**;o0h2 d2j ddgi skj:jmaat 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 z 0n 0zd2xqkq1 u+;jetends of a meter stick. Find the electrical potential for the center of the 1 dn+kjeu2xz t z0;qq0meter 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, 00ldq 5u38 td5hzp o8vn). If the potential is taken to be zero at infinity, what is the electri 80o5q8d 3dnlzhptv5uc 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 the pot n(/wkhj sxx4+ential is taken to be zero at infinityx+kx(4s j hnw/, 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 atu8z wnx,qmk 8+j/ul) e (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 to point (0zue q8jkn)8,m/ +lxu w, 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 adfiiop+3x0g;cs (xh 6re placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 3x0hop6 i;+sf( xg dic2.0 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 mC are placed in two diagj(61 j6vmeqstonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute pot j(m1te6s6j vqential 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, masfg ,nnm4j0mi 2f0l qa-s $6.64 \times 10^{-27} \; kg$) 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.gn(8w tt-9 hrz0 mC, at the corners of an equilateral triangle of side 2. gzn t-h8w(rt90 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-mhm(nu dh0y5 / t1fmm0lykjn7/F capacitor when it is charged to 100 h10/ykt/nf(0m d 5 yjlumm7 hnV?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capayw9mn(f:iqti+z c c;4citor 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 separatedbwfot+l ;+lx gj 3lxsj: .o/9v by 0.050 mm. If the3 so+f llgv./;bxt j wjx:l+o9 capacitance 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 arr2nlsm 7zb 0w5ea $0.20 \; m^{2}$ 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. Iaj5iadlg*rr,kls 0 vze 3 0b)1f the potential difference between the plates is 2000 V, with the top plate at the higher potential, whal5ilkdz *,0v )ajrebg0r3s1 at 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 i:kzd, 0yw6 z9ocai0 qss connected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, whi9odkqz,:z cw 0y6si0ach 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 15c8n0 ;zo4 sta p *,zx8nlyz8ak mF capacitor. How much energy is stored in thx88ya;* 80s,k4nt nzzz cp olae capacitor?

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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 enee( ifja)s al m(i31,;ohtx2vviu pv:5rgy stored in the capacitor: x()s3mau ovh;vif,tepiva5i( l21j?

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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-fnex ;ah vg7z/f /*xq it is connected to a 12.0-V battery. How much work was done in charging thisexhf/; qf7-*x z ga/vn 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 stores sxfbt;o214ooib/ f9j5hpkz e(wac 0. $2.0 \times 10^{-3} \; J$ 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 of a zqe:-qiz7o d42;h hsmrea $1.5 \times 10^{-4} \; m^{2}$ 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 plateshp-/, mq1f v,cy h5dbl4h 8ihs 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 arpl;22 53p rqefq0vsd)zc3 :yvxa;b0k j7 fayzea $1.5 \times 10^{-4} \; m^{2}$ 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 1wdggct 0-1lg ,r*-pydj b,bfof $0.40 \; m^{2}$ 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 capacit l9mn k0u5qd04ykw8s 5b(a cx a;j6kaamr.e(wor is constructed 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 connected to a 50-V battery and bebou jj (zgxt8uw *8.;pcomes 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 diezx;(optb j gu u.8j*w8lectric 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 bab3 wraax qlgsr1 (-3m8x 7pxa4ttery and becomes fully charged. The battery is removed and abgmla 4sr1x83p(-awx r 7qx3 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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