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习题练习：Physics Unit17: Electric Potential
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 75 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；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。本试卷的直接作答链接 https://tiku.one/test75.html
 作者: admin  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 匿名未登录  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 ve(,kmn ,axq;t u k6exh9ctor?

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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 i:g a ,y n(9s4efoz ww52 7tnbzte3dva)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 uss: s2wkypwc/xz+ ir36j4 7g their surroundings. Object A has a net chargepcs+gr/76y:szx j 2ww u43i ks 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 direction of the eleci7s(l r2s4b fztric 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 directionq 66v;kjm+g kt 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 conductk hi zkv5dq2igxp47r(+g c3 iz /h,y6ging 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 potentiax/7f1w vdfmc 8.luo)kl difference. If the potential di wo7 .mf /clx8vk1)fudfference 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 are at the same nb3usi314d,q)v z cx1vl sg 0hpotential 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 a0kn ,bcq8ecb1;ws6r qlong an equipotential surface681bwckrqq;bsc e, 0n.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mr*qmp(6j w2vz ;gmyt2ust 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 plq/ io nfed+j*0vx,* dpa+*ox article carrying a charge equal to that on the electron as a resul *vf q+do+/,ali* *xpne 0odjxt 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 unitp(b;*a t z4tbu 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 correwc9; kr-s;j3-stk chxpoa06ssponds 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 posivt81zs+.s3e0 kxc y zctive point charge is 100 V. What is the absolute potential 80kces+v xtyz s 1z3c.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 negi 8e3hym rk ;yh,t+m, e:1;kjy bn*hkcative point charge is -100 V. What is the absolute potential 4.0 m away from the1njrkky ;*+ mhyt eh,kcmby:i3 ,8 ;he 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 ixl3w;zj gcb.o6 e5s 5ax3c4g ns 3.0 V when a charge of +Q is located at one of the square's cornersab 4c5 zo;jx5 gglwen33.6s xc. 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 center of a square is 3.0 V when a chargeutq2/6k f rz4z8pf / l0dxu dmplnq0aj-(um-3 of +Q is located at one of the squar/f3xam-48m6 plnz0l2uj0-dut( uqp q d/k zfre'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 o 9 t829dmb/ncxb )j3xdei5 jpxf 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 m s(m9i:g3jeqa

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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 idenp3pa90juj:ic8 b6zrn tical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capacitanjin6uj0br:93pca 8zp ce

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capaci 7ts /p6m9 oitxef*ddcr437kxd.t k3k tor has a capacitance of C. If the area of the plates is doubled and the distance betweenti.*ctk kme73skoxpfd/d r 64dtx73 9 the plates 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 then is removed.- mmwfk2 ;,ett The plates are immediately pulled apart. (With the ba-ft2mm; , wketttery 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 field between t;ppv0(k+t9nh dw4 ygm he plates of a given capacitor is weakened, the capawh 4k;pgnmp9+dt0v (y citance 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 wx3f)jtzzn 9 hxdu 0aj(7 n5dc3ith constant voltage by a battery as they are pulled apart. During this process, the amount of chargfx( )n933u05dcjza jdnthx z7e 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 wioscfl f6mc5 5 fe5*.xqth constant voltage by a5c5m *fesxf. 5c6qolf battery as they are pulled 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 dielectric material between the p et8lqo/mk2k)q. j ;vxaja (v4lates of a capacit oe8)x2a;ajj(q qk.v4 vm/tlkor.
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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 capac u n 6u; k1yxl(zoihr0nr,x8l c;jj99witor. What o (ulxzju0 ;nnk,1hwx98jril69cr; y happens to 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 75j )ec lj5jd(h aj2xzthe plates of a capacitor holding a fixed charge. What happens to the electric fjjhxdlj5 (a) 7e52z jcield 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 /p,j;mrwjyxu;* d2la and becomes fully charged. The capacitor is then disconnected, anam/ ,rlp2*d yj;u;wjx d the separation between the plates 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 capacitorau017bx vqq:swb4o- ffl :dx) holding a constant charge causes the energy stored in tha7 b1)b qfx4q:fws0 ld:xvou-a t 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 ajbm /q1 d50; rki e3f+w5mkxkh1 +lvawcross a given capacitor causes the energy stored in that capac+xvk/ k;+frm0j3wqi k1e1w5dh a 5blmitor 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.m+f(s80m0lrok1 *u ,, byksj *ihwwzu What is the p fo1us *ky0w,mmwsruj zlih k, *8b0+(otential 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 ; yabd0n+q9gu potential is -50 V, to point B, where the potential is a+ uby9 q;0ndg+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 diffk .e 7yppn, n1andwe+bu3r ()serence of 500 V. What is the kinetic energy of th wenr.bud (k y)aep+sn1p,n73e 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 accez4ldg x8kywhi8 5p; k;q66epclerated through an electric potential difference of 500 V. Whatxye6ipg8; hckw;d6 8zlqk5 p4 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 Vk b q)kl-sty,o( c, 6evszj1n0. What spenz(61 koj0lsys ,,ec)tvkb-qed 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 9.0 V kuwq*(ab1ix4in) 0iz 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 t*lks(7clif-3 e i2j csj3tyll*)1djof 500 V. What is the velocity of the elecjjli*c3 1f- ssej7lyd(l* )tki 32tcl tron 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 object is accele(rr77x)puwnpoo b) k:f ahr l22, o8kxrated from rest through a potenr,h7 nf)ow2ak p:2o)r o8 (7ruklxx pbtial difference, and afterward 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 diffe38ptm ku: wqh- i 5.r+db,i9pqafn(qtfn )e5qrence between two parallel metal plates separated by 1.0 mm. What is the electr ne5faih9q:8w udqi -(mnqt5 pq)+ p3bkrt,f.ic 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 lrlng; oo 9ijz7w.ug m g::e:5V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at x = 2.0 m?w;oggl79mui:rog5lz.ej:: n

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform elef1u/kb)y:hedti 8 t(k 7;v mijctric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a ii/t:k7yk 1( )h;dmtjfbve 8 ugiven 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 direction of an electric field of magnihylcucu 8/v- l 6:1tcitude 3.0 V/m. What is the change in kinetic ener -6l uyu:clcv/ h1c8tigy 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, separ mr9*qk h,gwy f6ag.9pated 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 yaw mrh9pg,.gf kq6*9plate. 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 to a 12- t+j7zknb f,7yV battery. An electron released from rest at a location 0.10 m from the negative plate. When tj+7yt z7bk,nfhe 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 0.27;a/ ft)lzfpgp 6y1bf 0 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 electrzl7ay ff/bpf 1)6t ;gpon?

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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/C directed tow*z cxxxoht4kkpq; /-9k)rc: rard the east. If the voltage measured relative to ground at a givenr)/zcxck *xhr9 p4-o:t kk;qx 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 directed towarpct ku 7w fmw;7y/nxn 1c3-n1qdih)r ,d 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 nwfcw1 1nc y)uid7h-nt,mqrxk;p 3/7m 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,ul w g61n5*m1johd l;l it will acquire a kinetic el* n lu 5hmjogd1wl6;1nergy (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 distancn,b:k5st ke x6( gqk6ie 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 ma7ejx/ s ytw0x:2(pl seter stick. Find the electrical potential for the center of the meter s7w( eltj2:/0x apys xstick.

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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, 0). Ii: iz,sy:h f.wf the potential is taken to be zero at infinity, what is the electric :ziif y.hs:, wpotential 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 at5ggrxka6ly4wzel.k237 3 l.mkk f u1g (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 electric potential energy of a 1.0-nC charge a3g au.g 3 k64.2yl k1wfkz7e5lkxrlm gt 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, 0pu2jczw 7zf/)) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at7z uwf2j)z/p c infinity, what is the work 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 plua-ycg49b* ca34 tsiy aced at the corners of a rectangle of sides a and b. What is the potential at the center of the s* tbu3 44-g yaccya9irectangle 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 placed in ta+(3 fxpncrd 5 onq2x7wo diagonally opposite conqf5axndr ( +xop237 crners. 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, mass ut- kn.9e sjn4-; -1qsp oofro$6.64 \times 10^{-27} \; kg$) 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 nece ,hem2l.m35fsd2vsy assary to place three charges, each of 2.0 mC, at the corners h25mfdsls. a y,2e3 vmof an equilateral 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 +b j-qugf:;7h4krku s the plates of a 2.0-mF capacitor when it is charged to 100 r +7us-u;j:h qfkb4gk 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 capacitosmxulp(( sfw5 us,b *)r 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 thepuq+ d:r kgl 28yg9en ;0qn-hj plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the 2+u 08epnld9rg;khq j nq-:gy 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 ha bh :8n+ t;wmh6n)zs,(ocoh mts 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 o9f foviy4 jh gow+n8o w9b7l68f 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what iso+vj8o 9 hngwf6i48ylowf79b 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 conn n d1a:woc-4o/ )ebygie ymxoet,4i.;ected 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 i/ c tmoe y4;aee4n)o.-:wi1b, xgyodadditional 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 energy9peld *eq1p h2xi 7h3k is stored in p*7 kphe2xe3lhd19 qi the 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 energy stored in the capa,f++9r qcpyk m3l, ( ulm7ltxucito u7lr3x, 9+mlmutyp fc+(, lqkr?

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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 plate p x7f(cnr :jjsiiq)hiuq6p//u17x0 q s of a capacitor when it is connected to a 120q7i )xjiiu:/p76h/n (c q jur sqpfx1.0-V battery. 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 charged so thv860slpi q4kurdzfm7o:0 +v hat 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 plat bj0oryfca1- +es 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 plat,oe j gn+d76fyes 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 o1jcf8.lqk:c2 eoa: p5 b/v mauv(zah: f 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 area of rp7w2(la p k8r$0.40 \; m^{2}$ 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 plat.ju* b3bmf. v) )cahezw.c:ove 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 batulo/os5+j y d0tery 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 constan0u/ojds ol5+yt 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 becomej7xod2dx.o4vrc-e y 13i0yh qs 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 voltage across the capacitod14o7xo02hcx yvej-idyr 3 . qr's plates after the slab is inserted?

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