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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://autodiscover.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://autodiscover.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 no/sqcyr33xd45y6 wg y gt *xk*vt 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 dj7 j88tu ryoqkgz,*3zmo:.p 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 frtub (m(3)7szqz nkhk+ om their surroundings. Object A has a net chsq7h+tn((ku bz3z k )marge of excess 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 directiond7 cwx,6 vmmomwkq;:) 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 opposite to the electric fiu7:zy4ldxlrr80 ,jdmvuf 3koz(2 v*veld

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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. , 75/mln m 2sstltito;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 i0 0fo ;)rvcrqfs accelerated from rest to a speed v by a 500 V potential difference. 0ro r;0vf)fqc 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 points ari zg2pbi (bfi8)rpho5rzyf , y;)v0; xe 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 point B along an equipotential surfk czjrv;s to963.aabl f2;(z-oiw g5zac kjviat.63;5g ;zb(z rlawz 9ocs-of2e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mu+ ne::9y4ctl.)x n5uxxw cjasj 0lv.ist 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 to that on the 9a(o d0c)fmqbelectron as a result of moving th fa)qbcmd09 o(rough 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 unitt4jlaz ,wbca9+gf1x4f d2 lm 9 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 corresdf hro5kf*t xjmy5jl 7z kd*67-b:5 acponds 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 from a positive w,vzbznw l)9+ point charge is 100 V. What is the absolute,znv l)zbww+9 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 negative point c3m7vy lc;jb )yharge is -100 V. What is the absolute potenticy37m l; bvy)jal 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 chargect- d/ wco9wt6 of +Q is located at one of the square's corners. What is the absolute potential wd9otc-wc/ t6 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 yr+ ib57kug t1 .xix6m3.0 V when a charge of +Q is locat+b yuitkixm65 gr.x1 7ed 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 alway3;o 2s ub8nxqwk1q *hns consist 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 j6l w63,bwll 05g-utyd wcf 2 9qo*smfa

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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 excepug yek,cf,z o 184f6ziyii4u2,s y/f vt that one has t 2 4 /fsg uiivoc,ie,1 8fzukfyy6yz,4wice 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 capacitank9wawn6 2*kat ce of C. If the area of the plates is doubled and the distance between the plates is wnwk a2a 6kt9*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-pld 8hcp:nfpg54a,ba 1fate capacitor fully and then is removed. The plates are immediately pulled apart. (With theh1fpp84g cdb f,n:a 5a battery disconnected, the amount 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 fielk5*n -v +l4s hs*h p6n/udlstcd between the plates of a given capacitor is weakened, the capacit 5hv-psk/*ldsn*46 nls+uhctance 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 are maintained with constant vol.,(lfcf s,g1n xl7j5sq* cs. tn;s tqrtage by a battery as they are pulled apart. During this process tjtc.5,*sqslfsn;n.f c,srlg qx1(7 , 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 9 x:qoe47e jq.fl up8jconstant voltage by a battery as they are pulled apartel9pqxqjf :j4 .uo78e. 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 addin1:+cdz+ nv golg a dielectric material between the plates of a capacitor:nvz +o+gd 1cl.
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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 pa(zny rnj hhp /4d)e6+hper is placed between the plates of a capacitor. What happens to the capacitan+)dpnhrzyh h( 4/j n6ece?

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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 plat8(v1dnop at aaz* x9w+es of a capacitor holding a fixed charge. What happens to the elecatn*w 9 8oz xd(aa+1vptric 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 beows7rg 6xmig-5r/n:+im f vg*comes fully charged. The capacitor is then disconnected, and the separation between the plates i-fm/vr +m :gir*xog 6 ngw7si5s 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 capacit lme30tkr o7cir:*tb s4.:l olance of a capacitor holding a constant charge causes the energy stored in thatl0ob lr3i7:.omk4rtes: c lt* 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 given capacitor causezsa igs6,x 5 6s:2rlmis the energy stored in that ca:6 5r ims2 zg,6slisaxpacitor 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 movebjm3q: .jg 9ya7l1;wof 5biyl 10 C of charge from point A to point B. What is the potential difference between points A .w b1ymj f 9i 3lljo;by:g7qa5and 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 es wfn8w50 e4 ed5aptv+lectron from point A, where the potential is -50 V, to point B, where the potentad+8e5weftnpw5 0v4sial 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 an2*(xh4n 1swp hofq0 eo electric potential difference of 500 V. Whatfs* q4nhoe(hx 20wo1p 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 accelerat.j -xnod+gw u;7/)gzenqzq)f (khvh2 ed through an electric potential difference of 500 V. What is the speed of the prot; hg( )q7nf+kxoznqe.uzj 2)/vg-d wh on?

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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 thrg,uv+p0r s-tr0 la c.fough a potential difference of 1200 V. What speed does it acsl-0trfupa+ rc0v g.,quire?

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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 in movd65bqecm6c w;l:l i,cing $8.5 \times 10^{18} \; electrons$?

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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 1zc,5 s*y vn9gbu-wou1yep;odifference of 500 V. What is the velocity of the electron ab1 1*,go;own c9puyvse-u5z y fterward?

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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 chargeh m7e+px.i bq, of 20 mC. The object 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 potih ,+m.xp7eq bential 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 between two par,dfh .ib 5-c 0/gimjbeallel metal plat cbfjig0/me. ih5-bd,es separated 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 magnitukww jq3 4:6gfide of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potentjwqgfi6:3 4 wkial 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 tog*2 qvhul,guk nd.p f(va92u7ward 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 g2l* g vvuh9 udn7kqup.f2,a( 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 magnitude 3.0 a )90rm-:hry vkup9niV/mr 9pr- v)m an0k:yuh9i. 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.d/wn:9m btd2g 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 betwd b9 d:wtn/2mgeen 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 0c( 0,mtquke uiu(c n/..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 electrontq uci,ekn.muc/( 0u( 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 12-V battp5x+ml,,s5hu5fjwd 8 1 ejty iery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distai,ty wsh585euxd5 j+m1ljfp ,nce 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 fielle6+gn ex0ovs( oz8bbj;5/ f bziru /1d 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 o(/ervnf/xs6b i0 loj;eb1 gbo+u58z zf 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 directed toward s45 9sq 78*fctdkufueo-2hncthe east. If the voltage measured relative to g9uq-hu d4n cc8te*27 sff5s okround 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 acqui69q9ouc 2oiq vre a kineuq92iq vo 69cotic 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 at a distan56m/rmj /km e6 cw.ny)- ysuiojq+/pxce 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 b.ndj u7)n2g; g)w.9ny/xb)mcgigxyd o ,b:nare at the ends of a meter stick. Find the electrical potential for the center of the meter),o ngdj;2c)gm ) 9xn7ynb ingyb x/ug.:wdb. 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 chy/ zmr i-+,3vug0wb.cfbl 7tset:/ tkarge is at (3.0 m, 0). If the potenticlys/bbw,0t7eit: / z tvfm- +k r3.ugal is taken to be zero 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) and a -2.0-nC c x k5f/(ny qjslh/oa+9harge is at (3.0 m, 0). If the potential is taken tjk ( s/nfayq5xlh+o 9/o be zero at infinity, 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 (0,1 mqli.hjb87sh ehga(1- hh* h 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 work required to bring a 1.0-nC charge j*hh8171qsi( -h hm.elbhg ahfrom 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 7gp on99e7p cpof a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, anecp 97 pnog79pd 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 k( cc4u6 qjuj r*crm/3of +4.0 mC are placed in two diagonally opposi*3 c 4jq(uccj/ku rmr6te 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 (charge + v,vp:/t.wb mi uo55 fpkfu+a,w,wa8 kd2fkx.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 l vmrq 888+b-kj3rj j,r4 cmlpthree charges, each of 2.0 mC, at the corners of an equilateral triangle of side 2.0c8 8r8bpljjl, vrmq4kjm 3-r+ 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)tsgfhl5 l:3 43etm 1dm7wqlqkat-u; plates of a 2.0-mF capacitor when it is charged to 100 t mlet: fq wul4lqm3k513h -gas7;)dtV?

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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 aren9;0viy ra danpf)u)*a $0.50 \; m^{2}$ 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 cgxmf;q/ 47uxplates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate uxm;xgqf /4c7area?

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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 ro 0fa7)e :lsdhf;1kvlyk 22uhas plates 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 o z)sng :dbver oxfz 7 n.:+rli+;mk)t:f 5.0 cm. If the potential difference between the plates is 2000 V, with thevk )to7:)lx eib rzz;n r:fgsdm: n.++ top plate at the higher 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 capacitor is connected across a 100-V battery. After the battgq tcj37iz1 p(), qtsnery fully charges thq njpq)(, gz t7si13tce 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 on a 15 mF capacitor. How much energye6ydf qn33ncf 3e1+7x 5radh8h h6n cy is stored in the capacit8cry35hhx+ 336 fy71qh ad6e nnn cdefor?

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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 acros;t uwrkf8.xdshvlzr; 9* -tuhh:; uy+s a 15 mF capacitor. What is the energy stored in the capacit +-:z9sh.rxhht ulyrd 8uf* ;vtwk;u;or?

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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 ofi+ 3,u-e 1poz3yog4haw+ qwur a capacitor when it is connected to a 12.0-V battery. How much work was done inw ,aq-1 e 3p+y3uwozrig +4uho 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 st;vimf n8sii*exf;-e 4ores $2.0 \times 10^{-3} \; J$ 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 consisoyh+j x gisw783p 0jcc4z5b j,ts 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 capactd):4futje i4jq:sl9 xiy. f cw 38c4uitor 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 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 nkhd6. kp-azi0 m*lc 5of 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 ar bxxgub z) ,g b5xjvfb414z33sea 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 capacm6c4qi3 vp q kc)k,3pditor 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 connectyr (hioi **xe)ed to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the spy*xr *)h oe(iiace 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 fully chagd72hef- i0+y uv)z2y5dyea mrged. The battery is 2zde7hdu2fmi+g -yvea0 ) yy5removed 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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