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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://5edu.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://5edu.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: admin  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 / qd dg:p719yheo,ndlnot 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 coulomxte: fgl)5q r1b 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 tguys aee cw2/ k ;+:bg6b1c;y8 ,dhhhsheir surroundings. Object A has a net charge of excess electrons. Object B is grounded. Whh,w+bcgysku:6 /y ;d 1ec2sa;hh 8gbeich 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 th2xshp u-fmix jy2*/8 j t(k;mze 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 diryzq 8-mt5dsarti2 5 xvw p 1sya-+1b1nection 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 spherssm 0c4d +y,bi0r6b l*igzs ,ge. 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 500 V ket5 z di+l5 lim2rb/-potential difference. If the potential difference li+bl 5-2i d/tkmzr 5eis 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 i fi.v5el 0 qpnpp5l8.ts 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 equipotenti)wuad d ,uf.5fts ,xn2al surface.s2.xt)dffa du5 nu,w,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must xuoyi p(:wz c y18hd:w91y-r rbe

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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 to that on thep,c.(exy2lzm j bx+vnxe j.*1 electron as a pjce 2 x n.jx.*,b+y(z 1emxlvresult of 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 uaj45bxb wy18jry2 kt2w90 br xnit 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 correspondsl:r2 ldy)ec. r;m9pvga9wp2f 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 1 )lvz1sxbeeac;+w d( m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the cw ldx(b1)ze e; v+sa1same 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 neg3ov cdi/ux l krf:8;:gative point charge is -100 V. What is the absolute pd 8u kc :xi:lf3;r/gvootential 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 charfuv-:smf onx8z c0lq8/p; d *xge of +:;-o8u qsd cn/xffpl0 xzm* v8Q is located 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 dwp:enpd97+tppce(g.nq k a9w x b3+ )center of a square is 3.0 V when a charge of +Q is located at one of kcp wb+99a e+d p)3t gde7nxn:(q wp.pthe 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 two charges thatv7.4zyv.swq7 y -gmufhza2 l4 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 ejtso)08oc:ufl)-mw 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 respec,4toebo(q itz8oycm2 ) 55eret except that one has twice the plate area of the other. If the smaller capacitor has capaqtze tyrmoe, 24i55o )co( be8citance 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 the area of the platep okq/542oz xns is doubled and the distance between the plates is halved, wha2/oxpn k q4oz5t 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 akc,( km8e(z tremoved. 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 beingz,8(eack k(mt 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 cj5/xiigbwu sp2a,m.kt u/26i j2) rjxapacitor is weakened, the capacitance of that capact2ji rsmi.2 6auxj/bux )p/ jk2g,5wiitor

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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 c.zh(vb r. hg5zonstant voltage by a battery as they are pulled apart. Dur.(5zhvhg.b rzing 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 parallellv qf6sv*s :,tifv /-m-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during this procvt/ ,vvslfm*fq s-6:iess?

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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 6c 1o zd xu82u -/tk9hlmfvb:ydielectric material between the plates of a capacitor tuhu9-z 6y/: vd c2bm81fkxol.
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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 ca8 z ,6w(crta2)zsk7r;muglc7:jvsel pacitor. What happens tu,s(8arre ;c wlv2t:gzk) c7lz6s7j mo the capacitance?

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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 thisnd8ofzgdq 2k-7 d):e plates of a capacitor holding a fixed charge. What)qo78in :zd2d -d sfkg 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 d n3. a u0paw/l8 27ncbicoui5fully charged. The capacitor is then disconnected, and the separation between the plates 0nc8 i7a52 inu/bdaup. owl3cis 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 holding a constant chae k,zwua pn9.0;a7ygbv zy-f7rge causes the energy stored in that capafpwu-ay b.ez7a;,9zgn 7y0vkcitor 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 given capacitor ci/d7ks6 aey ai13vlk7auses the energy stored in that capacitia7/6ed 7ykvl3siak1 or 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. What isg lm ybchoo6-1pb/-6v tv-1poob 6 ybl/ -6cghmhe potential 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 pol9x+ yqcgpd5p i 586ypl-f tp60i+am9 kqusj*tential is -50 V,59y9 d q+-ai86kyil+pjt5 plx upqm*c0gp6fs 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 rest, is acceleratedhrs;q z1)r zi. through an electric potential difference of 500 V. What is the k zrzr); h.1qsiinetic 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 dip5dzls* 3t -cxfference of 500 V. What is the speed ofzpxds*5-t 3cl 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 throuxxf*pd8mqnbz97 bz2+ r*xfc(/cf 8 szgh a potential difference of 1200 V. What speed does izbn c8r mf xf*pdf2bc+q97z/ 8*( sxzxt 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 ipx f2l jumc-;;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 accelerated throbh3w xx2 ek/ +zp72kbxif,;p iugh a potential difference of 500 V. What is the velocity of the ei2ef,xxxpk 3b/ pz;b hwk i2+7lectron 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 ovjxkfc5i7pw0c 0y 3.wbject is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potenticyi 0 x0vkf3pj.w5wc7al 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 potenti6p2s 2 xl5lsstal difference between two parallel metal plates separated by 1.0 mm. What is the elelxlt6 s52 s2psctric 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 ma-.iva w/n pf gc3y(:z sub.y,agnitude of 500 V/m, is directed parallel to the +x axis. Ifab,wn(u:zigv - acy . 3y./psf 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 njnt4o9y* j 8sof 50 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 point?4ntn8yo*9 jsj

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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 mk4q2f3+ 2cfvxrw k8qhaxy *s 0yw)b:q along the direction of an electric field of magnitude 3.0 V/m. What is2x0 qbw3acqh4*r)kqvxy: kfy 82 sfw+ 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 dj9n.az tqf7caa )3.hby 0.20 m, are connected to a 12-V battery. An electron released from rest at a locac 37dfajh9..zaan t)qtion 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 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 tj4h,sk +/pourj7nm)h o 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, h+jhkh4n 7u p,)/smj orow 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 0pb5nztu,q.;( s d:brm .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, what is the speed of the ele z;b:trd,m pb(usqn 5.ctron?

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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 fielx339 .c srtsdbsxy2 5a2f4qa vd of 50 N/C directed toward the east. If the voltage measured relative to ground at a given 2r df3.b49cxys atxq5s av32spoint 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 direct z/f9,)nyfo +i usn6fwed toward the east. If the voltage measurezf9nnff io usw6),y+/d 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 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 acqui 78:b x/nyei sk;x ry *1io;wffo,4pwfre a kinetic energy (in the absence of frf*;effk1y,8ix o /;n: sbix4poryw7wiction) 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 amn fnb9 9ghg)1 i8+g muwy/php e;0a1s 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. 7m )oll)msxm27i i 4wyFind the electrical potential for the center of t4immlxi)7ol s)7 wm y2he 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)+ v a.7jyoi;dcs s8c(t and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, whaioc j(.c y ;7satd8s+vt 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 chac-gm,/f l6-he 6+a05 7vnugmivjb5znh vo-nkrge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what ili +za h,6g5j-mve6kvb5n-o/g-vm 7f nu hn0cs 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 at (3.0 m, 0). If26z. no mk6ms1w k2o uic)vyg0 the potential is taken to be zero at infinity, what is the work required 26gcv om )wz62skomy 0ku1 ni.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 cxx*l2 55(.g:t ajl pkumw y:lyorners of a rectangle of sides:m j2u5ytk: wgx xa*l(pl.y5l a and b. What is 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 ofh,qlalm ; s0dt 39l/dg ob/jd3 +4.0 mC are placed in two diagonally opposite corners. In the other /b3o tds m ,gdhl9lq3/a0;j dltwo 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 (char g n/d ae4,;az-u g:z:-ovgzarge +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, ea ofoyli0p i7ze(4hzpeq(*d+n*w 1g x+ch of 2.0 mC, at the corners of an equilater*qoi 7z +n1pgo 4p(ylxdefz(+hiw e*0al 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 tozo;fm)2yr9:j (dvz dq ejl dp41py.- z 10p1 2z:(r fo eydp4zj-9 ;vq.ym dlzdj)0 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 pxh4 i(u9, 38ch0v;xb v f+fmpu*sticj lates 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 capac4zn:m7 r ci/p(b:07 vgwbxoj kitor is filled with air, and the plates are separated by 0.050 mm. I:7 jc0 vkbxbm/4iw:nzpg7o( rf the 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 puv lal m2hla2+za-(uy51tf0rlates 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 capacitor has a plate separation of 5.0 cm. If the potential d jql5r,f2 d t ,hhm364dsu0*g8j nxxdoifference between the plates is 2000 V, with the top plate at the higher potential ox,nsh5lu g0m j4 qj6df2,t3r* dhxd8, 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 b2 c/z(hg5it ogattery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from t2o5gch /t (izghe 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 mt2 ob mgrsp17vs8 d,q3y 2pj6mF capacitor. How much energy is stored in the cao3d 28 ymvjr p2pbs761tm,gsqpacitor?

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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 ene rz*7p34/,/pth ; wlo lyoehzkrgy stored in the capac,h pl/4er3o;lzyoz*ph /t w7kitor?

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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 an,k8h l.s*k0 ler)3yqth n+ng capacitor when it is connected to a 12.0-V battery. How much work was done in charging this capacitogyqek8*h l3.,tnn nkrl0+sh )r?

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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 thy99fmtut;f5ptisn ;jy/(7 paat 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 consist 5txiywem8/1 yj0j6 wms 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 plates0sku:fq;e ntv+f(ihavp86 v.fxl.. q 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 conr1z aq(u1b -gy.eyo5l sists 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-kxst km .l7:k 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 capacitodw . qi6tt0c23aso(6r3 pddnvr 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 xzszn e l 67 43l/b4;sw lv1bi*fvuu:tbecomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectricf*v4/1v zbnezl4x t;s3i6u7sl wb:lu 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 becoac204srh qsf,+et ne5e/8 lgsmes fully charged. The battery is removed and a slab of dielectric thath2n80, es/r4qcaf+tlsee5 sg 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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