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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 isx dob/k,s* 1iv 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 a:;3klyx-0rlow ew) a 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 theirbi w4-0emx 6kw surroundings. Object A has a net charge of excess elect4i w6xe-km0bwrons. 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 i x *hss e c hw+57x.hvvo-deio m/.x:stjd2a2/n the direction 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 dirj(vi2 .rmi n1pection 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 ar iuf+ . lyzf0dj5l9syga 4v9 c:ya5m)ce placed 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 frombi+1n0 sg+ hiz rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 +ihn0g b+1s izV, 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 j *tambl p2;6ku1hvl: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 alonglo:zg:aky 2fp5ni+s h,y4hu co, 4 n,b an equipotential surfac c4nkg,yu,onyzh2f: sa: 4b ph5+ol,i e.

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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 ngcch 2x 7)cg*c6;z+, wwfcvybe

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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 equahu,9c357,k iw ov;uh))x np qpsp qz2vl to that on the electron as a result of moving through a poten9v,3vz5,u ipw)pxp2sqc o;k q)7 hnuhtial 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 unw/: br- hu 5*v n:w 7iqo(vvhqoht3jo7it 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 corresponds g+,vwbr4cl /i2 nqy )mm bz5a-+)hiwlto

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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 distan117jesyh. vw wa5a nn.ce of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0wv 1ne15.w 7snaajyh. 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 f;xe8v zi+qm5 2.0 m from a negative point charge is -100 V. What is 5fe ximzq; v8+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 isrj6f gtj w+sq0v (c:+y 3.0 V when a charge of +Q is located at one of the square's corners. What is the absgj rt:cjq6(+s+wy0 fvolute 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 the9 fug0x5-i ukd center of a square is 3.0 V when a charge of +Q is loc9i u0gk5xfu -dated 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 two charges that ar/au/ qb fpf+nscd0cmy+76 (xce

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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 c,1zvh2) v n/dbzc t2gh50ffha

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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 resj -w( s:z6hkb .jo;ibxpect except that one has twice the plate area of the other. If the smaller caphiobjw6.xj-; zks :( bacitor 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. If the area of the platsdaj*,;oa ahln6(m6 ul+an/m es is doubled and the distance between the plates is halved, what is the new capaclu6jo+/(mnaa ald, n6;hasm* itance?

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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 removed. u 0pxb:g*ki1;3dx mcg vjdp*lh8v67 pThe plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the potential diu7dblj3v6dc 0p*xxgh*g m ;p8: v pi1kfference 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;p/ 1 kiregy: *n5xtpt a given capacitor is weakened, the capac*k: tx/;i15epy ngtr pitance 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 main05m2ws6nmmc rm8 rm 7xtained with constant voltage by a battery as they are pulled apart. During this process, the amoumcm5wr6 sm7 mnm8r02 xnt 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 voltage ( /4ayzrkdg w,by a battery as they are pulled apart. What happens to the strength of the electric field during,yd/rgw 4kza( 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 mate0)lvw0rre8aw r qetg6 w3n*nk3hd.i k.mt:u0 rial between the plates of a capacitod e n83u.0a*.rtmn3eqgr)0wvi wl0 rh k t6:kwr.
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material www,s b5 ,73 *ie7wjx(sbqg0nu 0xcujsuch as paper is placed between the plates of a capacitor. What happens to thn7,xj 5wx3w,uqi0gcw s7(wseubb* j0 e 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 the plates hu+)ge -orc)jqsn9 p9 of a capacitor holding a fixed charge. What happens to the electric fieldq9)9eupro)chsg+j n- 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 fullc0e,0osh,iblb , piqabpx)a ; nz*i*9 y charged. The capacitor is then disconnected, and the separation between the plateqp *lenps0,) ib 9abh,zi* ,x;cb0 aois is 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 constan0. l-nenlw) cvt charge causes the energ )evwclln0-n. y 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 glv ks3-(a .yxwy4)ss xiven capacitor causes the energy stored in that cap -ssy3lv( x.4)s akwxyacitor 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. Whaog 8,rv;lfvke1h (lb4 t is the potential difference between pkl1(fv hevb,8ol g; r4oints 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 potenn ma2;j;n:n cmtial is -50 V, to point B, where the pote2m macn;nj ;:nntial 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 a+gt6lc7 y ei/uccelerated through an electric potential difference of 56t yeu/7cl+g i00 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 through an ev4jg.h3i6:yu czs wj ()7syi ylectric potential difference of 500 V. What is the sy3uhi zycj( gj4sv6iyw :.7)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 protoctp ip3a;i6+ b6bc.bln falls through a potential difference of 1200 V. What speed does it actb+l i6p;cpbib36 .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 in kn*s1v sayt(6l /e57ouvr5 sd 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 differfar 7r0pi*q ablb; aa--v cv45ence of 500 V. What is the velocity of the electron af4 0 7a-lbipraa-c bqr*fvv 5;aterward?

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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 203m 8bqr*w xx8mzgk i+5 mC. The object is accelerated from rest through a potential difference, and afterward the ball is mq3wm+ mg8ikx* 8 rb5zxoving 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 difference between two pa h (4vhmjl, f;9pln m n2l4otpmu7h6a icl72b,rallel metal plates separated by 1.0 mm. What is the ele7 i v,chb7 hfjln9p(a,mn m2l4lt 2p6uomlh4; ctric 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 500 V/m, i-4k3rdnr.zu+uc-lv.1k0 ioi :bj)bwg qt hp4s directed parallel to the +x axis. If the po.-tcdv.ih o gu1rkj+zb0b n4w) lqip4r k u:3-tential 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 1su 2kkjo0h: jthe 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 sk jko1j:0hu2 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 direction of an electr 1jhdlr xihj20t jh24v/7y;nl ic field of magnitude 3.0 V/m. What is the change in kiney2ld; i 4jvlx1njtj0h rh2/7h tic 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 0.20 m, are connected to a 1 h1):x6 o o4n x8qa(+6z6gpcxmebvtx uqb:s4e2-V battery. An electron released from rest at a locatiebxxmuxb)ve s: ph 6:zq c6+g6aqx44 t8oo1n( on 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 0.20m 4*d,wlr*l -waai9uw m, are connected to a 12-V battery. An electron rele irw **wd-lu,l4wa 9amased 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 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 av 0z ,d9yw4sl z609gdep 4 w.sxmb+(nr ztja,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 0( g,9pd4ztl vrabejns4z ds60,ay zwxmw+.9 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 field of 50 N,hhp7 kv+fy/;dtz 9r j 9moi)u3 sz)os/C directed toward the east. If the volt9ov ihs7ohz) /, sk)zjd3fum+9r;py t age 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 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 directe /fa2x6bpbv.ad toward the east. If the volt.afbbp/ 2axv 6age 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, it will ))yr0pw m2is-m 9urgg-leg9t acquire a kinetic energy (in the absence of frict i0 -2etwlm9mgr p sgu)9-g)yrion) 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 distance ofoh gzr rlv)56mn;wc9) $5.0 \times 10^{-10} \; m$ 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 z jd9/rzj9j1,kr ap 6nhft: ;eof a meter stick. Find the electrical potential for the center ofe;jt h:pznd9jafk ,rr1/6 z 9j the 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 m,h s : , ;872yr/e pfwt.utpp1l kr0aiu,fl5ebc 0). If the potential is taken to be ztf5s 7epb,lk , 2fcu; /ap8pr.:reuh 10ty iwlero 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 charge is6jik;)6fa 3n cr:ncxu at (3.0 m, 0). If the potential is taken to be zero at infinity, wxn:c;u )fr6c6kj ia3nhat 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 ado wc6u3b)o l*t (0, 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 wlu *o)6b wcod3ork 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 at the corners of a rectangle of si z/ /jfuuzv57h. kagh;des a and b. What is the potential at the center of the r a;5zf/u uzhvgh ./kj7ectangle 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 pk 1 jv5b5mxtz0s w+le9laced in two diagonally opposite m zb59lsxtwv ek10j5+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 +2e, ma1r6+/4db2 btpk ljur +dig6uwss $6.64 \times 10^{-27} \; kg$) 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 (khvia7xc5y3 /wpza*the corners of an equilateral trianglx/zc3yah 5v a(ipkw *7e 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 charwsc48;t9 rr)r:clb n fged to 100 Vcr);t9c:bf4 rrl n sw8?

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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 pll9xr6) ldna4 cates 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 wi a9 0 ornqxl6i h-lcxvqp1pa,4/*ztp (th air, and the plates are separated by 0.0lxtalr* 0co-9,azi/6 v px4 ppqqn1h(50 mm. If 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 plates oh: 9m f2 jjxacgy ;lm:d:hc)q8f 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-k6j cna/ewa plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field betwee aak; ce6/jw-nn 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 10:ytne5 lp)0d n0 yfbh80-V battery. After the battery fully chargesptehy l0ny8)5: nbf d0 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 on a 15 mF capacitor. How much energy is stored in jru4eeltmq16sg k w;/l/,y9f-:sylv the capacitsgt,l:e4v1rwy;yqu kl6ef/ls 9m j- / or?

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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 . ooy9mnj.cv9stored in the capaci.9cno9jyov. mtor?

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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 conxhzx 8( 3k:ajfnected to a 12.0-V batteryk8(x zxa3hfj :. 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 6 w9) -kck*s+pqqry kkcharged so 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 of unxq,*e )2nlewkp *n2plates 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 b8pybua2vw8 , 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 a59jd ) po: vof:nx9ygh/u x6tyrea $1.5 \times 10^{-4} \; m^{2}$ 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 capacitouln7y9 v6/n.c;t- iw 1k(gfxyqswi6dr is constructed 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 capacitor is constructed with plate b tz-ifv1 +za,:vc9vcarea 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 becomd (v)ykr,;kf qes 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 constant of 5.0, what is the capacitan kqvr(,fyd;k) ce 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 charged. 71)hv .a+ho pw+az 2 3atofbeqThe battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric has e+ a +7qvf3 2w.)aooptz 1ahbha dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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