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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 not a vecf6)xjm a,dxrx1yqb9 ay.af*k: 4y h 9utor?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulombnn0xuu 4b2c)t4 :vffm 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 their sufol;hjuqutw/04a9;(a uz nm4v5; c nbrroundings. Object A has a net charge of excess electrons. Objeco uv9 u;0 /lfbjutq 4nca(4zhnwm5;; at 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 dik4gh,v (iw:u xrection 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 movingsdm5kh q5 f8g+ 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 plg9 q2m1 ra-ptcl/gzb .aced on a hollow 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 accelerated from rest to a speed v by a 500 V pot;qv leeog3* (pential difference. If the potential difference is changed to 2000 V, what will the ne oq e3l*;gpve(w 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 rnt vp09o*j4n yzq/ f4keferred 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 equipotent e(y 0.dkwvu7b o4ffmtb r1nu-t5)7adial surfact-1.b t 5wnaredkmbu )(vu 0f47od fy7e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfacqy+ z6t)( gjmge 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 q4pss4;durvxi u6p31st 2c ;mequal to that on the electron as a result of moving thvri44 2pp3t6 1x; u;qcusdmssrough 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 unit ofpg)de+d 7d k lw0wt:g:

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspo gwun3tht5:8 jc )fb 1cw z;u-pg98haxnds 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 point cha8rx z mvz 3w:78dzdhtq/m*hv6 rge is 100 V. What is the absolud/8 x3*rzv8zzhhw76:m d qtvm te 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 charge i( -3 :t2pgtxjwie(na g7 1nbees -100 V. What is the absolute potential 4.0 m away from the same poine23 w:gn7(nx e (i-gabjpett1 t 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 charged 38 qg-jyr,wg of +Q is located at one of the square's corners. What is the absolute potential at the square's center why8g jg-,3w qdren 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 tsep6wreana 4r)u o48 i.ng6 t5he center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. e 45w6e 6a 8n) tgr.rnupi4saoWhat 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 co0d 03b2mf2vea 3ui8v :ejl cytzfrb:.nsist 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 volt1+sm kr5oz9 a ,nnpt7y:tj/r y 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 everci c)f(7,i /o s7oxvg opi7lbq.k81dpy respect except that one has twice the plate area of the other. o/cg q 7.k8ps 1p 7o7f)(vb,iixc oldiIf 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 C9z;m* fyb;(krt: cc gc2y4chx . If the area of the plates is doubled and the distance between the platec;kx;4c gy *cb:y2mf(zh rct 9s 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 theexdbbbxq- ) g49.x:iqif e:.yn is removed. The plates are immediately pulled apart. (With the battery dibd9) qg-.i efxeb qyi:4 .xxb:sconnected, 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 field bcpg6duhh6+pb3-l) y retween the plates of a given capacitor is weakened, the capacitance of tc6 - 6+rhdp3hyu)lp bghat 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 -bi1xxi3dkf ;lod vudy53:r+maintained with constant voltage by a battery as they are pulled apart. During th;u3-3kdfxl iv1:d y5+o rdib xis 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 paral*cg .9o gzvj/ofnki6;lel-plate capacitor are maintained with constant voltage by a battery as they are p kvc o;6/igo9*nfzj.gulled 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 d3hfej 6y6vq)+ dyqxu,ielectric material between the plates of a capacity6,6ehf j )qv +xuydq3or.
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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 capdos9/h qwg-x lz3r de+cx476k acitor. What happens to the k c976s/4+z3dlo-xxqwherdg 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 betr w8rf6im02hmb1 vf-ak 26gdf ween the plates of a capacitor holding a fixed chargfmah gm6b6 kvif2-d1 w8r2f0 re. 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 xj rfg +jz7bg/x56sv* to a battery and becomes fully charged. 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 this capac6gr jfvbx75s/ *x +gzjitor 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 capalyj*3 bwgr + z*-mpg*gcitor holding a constant charge causes the energy stored in that cap*myr*bg3-g lj*wpzg+ acitor 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 causes the energy sto**mklp,j 10 iemt j0svred in that capacitor ttsl p* 1vjm*kim00,j eo

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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 pointw2/9o u-fzsvo A to point B. What is2-f /uvos9oz w the 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 potent;i)p sdct;vj5 ial is -50 V, to point B,dp ;t 5ci;vs)j 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 potentialhjt/bsi40 nvwc )5-q b difference of 500 V. What is the4qb0ji b/s)-hv n5 cwt 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 d;ix*cc rkemvg81 jg( 6ifference of 500 V. What is the speed of (c ek*;1gxg vir6c 8mjthe 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 du ;r(qnlu h m)*q4,fm *qvrd(l22uisdifference of 1200 V. Whan)ll d qrf2rvus(muiq2(m * q,dh;4u*t speed does it 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 9.099u v9d ep5jow V 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 h zm)3dr30rol500 V. What is the velocity of the electron afterwardz )3hmd0r ol3r?

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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 object-o/ mg yob)c lp 5j8as-grk u7)ei*t4o is accelerated from rest through a potential difference, and 7 4*ar-yom5jcs8)ekp-to lg/g) ib uoafterward 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 electrical potential bqy9oly1tk0 j 5nnp o2 ekx-)(+cqb7tp wq1r0difference between two parallel metal plates separated 0pbqnc+7ypqo 11jt w t-xnbq09y(ko klr 5)e 2by 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 magnitude of xr*x8oe47wwq5 a5ijs500 V/m, is directed parallel to the +x axis. ijx4 *rws8xqe7wo5 5a 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 electric field of 50 N/C directed toward rzbjf4ev u7o s,fh 5c(mq 3s7+the east. If the voltage measured relative bjf7c f,e7 h+u(szmv4rqso5 3to ground 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 alonv-w9lxdf. .n.imwz )yxyw 1sg7:y io-g the direction of an electric field of magnitude 3.0 V/m. What is the change in .xld-s )ny- wiyo.gfv:i7. y m9zxww1kinetic 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 +e)f mpe;rg m gro:t7 w/8bd)qby 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 1.50 m from the pos g)mm7r g+weefbpo qrd8/;):titive 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 conz,f: j3( zqzo jccbe4 jt +yr.-; nt,ubda1cb)nected 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, how much kinetic energy does the electrn4+ze ;31juot(y,jza,: jbc).t- bq br fdzccon 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 p 5nkx 0n:03r:c2nvxas(u wyi0.20 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 a:n0w:kn0 3cn( 2pru i ysxa5xvrrives 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 fie e68 t*t7m5te/iu9d*djv06co csxi e dld of 50 N/C directed toward the east. If the voltage measured rel6xd *ec /7 i dv580t9s e6etjtou*dmciative 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?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform elect3xtbv9v*py -1.cryvk(j ath, ric field of 50 N/C directed toward the east. If the voltagyc tvb-(3v vat*p9rh x1y,k.je 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 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,goxr;r qryd .+o pm.;* it will acquire a kinetic energy (in the absence *o+r.d pyxmg;o;.r qrof 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 tvx j,5j9ps ssxfdp (x1/l3/s at 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 k9 ,h -sp:n(guh ,idpeends of a meter stick. Find the electrical potential for the center of the meter h:(kp-gen,hp9du,i s 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 :m) :47bfnxkit)ls5tj0 iyd7hhgpr -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential at potb7)h ti 0sfrh7):dxyip4: kmj2lg n5int (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/q d f-pwbqtvtr5*e 3(( :dbao a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinityb (v5daq bet(:*rw fdtoq/-3p, 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 at (3.0 m, 0). If twbga; sgj ph;10 uh1 i9x/w5ythe potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infi;uhbwg5;1hj9g 0wi 1xtp/as ynity 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 +qtiaf u((7u(m h ,ww3id are placed at the corners of a rectangle of sides a i, ua(i h3(wwu7td( fmand 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 of +4.0 mC are plrnp9jt xm./i+1 vtqz 41bpa w9aced in two diagonally opposite 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 centei a tp /x4v+wztj br9.n1m1pq9r?

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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,, clml. m,w9bgoiw3wz:d *hw ge +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, each ofqw5 * ag4ghq)m 2.0 mC, at the corners of an eamh 5wg *g)4qqquilateral 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 chuqm4p cnjqj/+p. d: miv)4s7 .ly -zotarged to 100 Vq:o4d ppjnl.4m)jscyiv-z7/m q+tu. ?

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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 arhbub 31dag+a: ea $0.50 \; m^{2}$ 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 pwbupw7( i js7 m7c,6islates are separated by 0.050 mm. If the capacitance mi 7 jpw7(7usw6 cib,sis 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 i;f)p6ehscd g :x(7gfhas 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 of 5.0 cm. If the pote-fd)rlwj-ey)) ry dd 5*smo 2cntial difference between the plates is 2000 V, with the top plate at the higher potential, what is the eyrd oy *d)25mdwjr-fl)ecs-)lectric 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 batte+ ru-twh 3m0gg*4 mruory fully charges the capacitor, the capacitor is immerse3m4mg+rut*u ho- rwg0d 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.e56 bahrh;.t67 ha jpl How much energy is stored in the capacitol a 6 p7r.athhhe;b5j6r?

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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 energy stored in the c/o* i4jqj7p(sjed6v z(xp2zj apacitor?*6j v4jp7( szx/2opd(ez qjji

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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 it is conn+zt9-:ubljqi amrx- (ected to a 12.0-V battery. How much wlq-(j z u-bm9ria+xt:ork 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 that it stores :*bwrxnwe v**$2.0 \times 10^{-3} \; J$ 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 cap/-nl2sr ;g ta/moc3r kacitor 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 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 plates of 5/ x*2s;p-icj nau6dblk 6utgarea $1.5 \times 10^{-4} \; m^{2}$ 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 capgn,ja9 kjp6y t++wxn *acitor 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 capacitor is constructed wi3 4fq(ky +o auw;czb9vth 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 wh, jq/ofl d3j6idtu(1pa8la9ith 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 becomes fully charged. Thojauqi 7sqp2j e*x.,d,g 6,use battery is removed and a slab of dielectric that completely fills the space between the plates is insdu.s6qq jo ,j7 aip*x ,e2su,gerted. 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 connectef,8q8: lqoog-we6; t,qiq hu hd to a 50-V 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 col,;8q:-oeq qw8itg,qouhhf6 nstant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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