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习题练习：Physics Unit17: Electric Potential
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 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 mk-g chtg 8-/ynot 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 l0 insp3*m1oa 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 int(b5 ajdzi(m /sulated from their surroundings. Object A has a net charge of excess electronsai(zmbd(5t /j. 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 directionyjaql503t: pnm7)c aj 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 optjesec6. 5f 6uposite 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 conduw39 kif;2 zetva *ize1cting 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 tokd(bpsc6rek 8: )kdi6 6prf o; a speed v by a 500 V potential diff ;pdp8d:6b)e6f ork 6kks( crierence. 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 are at th, 2*cj uz(/p b ov l) n.id(ys7.ks0zpzpl5orve 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 pointow)f5nfwh/1nj nq4m6 ,fzh 8e A to point B along an equipotential surface4,mwf1ne q 6f/on8)5hwfznh j .

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfz:)qb, u xwcvc69 zo01dnbtl9ace 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 c+764 / fg2vwcpfmqwdyharge equal to that on the electron as a result of moving through a potential difference of f7qv cyf6d+ 2wpwm/ 4gone 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 unioy+i+7a bogly 5-tqhtpm)* d- n;lj/v t 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 corr6vr ly8yxtl-3.akc ,h 7kcy1vesponds 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 distansf9yo w0. 8tr m0thz/ece of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from t8r9t 0eo/mfst.wy0z hhe 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 distancjtda )34kttd48+p iq )r tq/abe of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m a4ak)tj+ rb4/8itq adpt 3 tdq)way 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 a4 - lwndukdy;vb)mqqi9qe m8 qfr/* 94 square is 3.0 V when a charge of*u ldf99k4m; mnd4qbq/r- eqv)y 8iqw +Q 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 center of a square is 3.0 V when a c0 n ,dhv,g8vavharge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when a sechvvv0a dn,8,gond
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 7c4l vxuaj 1dh6*zb;yla82z; v6 ijzjcharges 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 a db o2z )7o+3xdymqt/ lxxlo5.

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate cac d*e*qa2hz d 19p. cw1zcn jw+(le2zxpacitors are identical in every respect except that one has twice the plate area of the other. n.cq+p 9 2zex(2h*ezzj*cdald1 1wcwIf 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 C. If the area of the platesf8a x e )cc9wfj:c;;rk is doubled and the distance between the plates is halved, what is the n:; ;cc rf wke)8jcxaf9ew 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 full.zs ;w7fxrf f+y and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) Wha7srwxf z;f.+f t 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 theti d(084f sq k0vgju(f plates of a given capacitor is weakened, the capacitance of tut gfq(ij408v( 0 fskdhat 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 parallpjsv)r.)o;p c6e w;g rel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this procese.);cwv;gs)ror p 6pjs, 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 constant -rnmw1)to:6t z4tnc:nvbgm: voltage by a battery as they are pulled apart. What happens tnbtvn 61n:)tz:t- :gmo mwcr4o 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 8u z0xu j8,ftbmaterial between the plates of a capacib jtu0 ,8fux8ztor.
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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 d/5lh t .uv9esplaced between the plates of a capacitor. What happens to d9 /.vults5e hthe 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 plati2,0id eai 2h13ft ldkes of a capacitor holding a fixed charge. What happens to the electric field between the plat0l1hd3 ie2iti2da f,kes?

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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 coryyeet7 k psnlz 4q2ol ,9fz,k1iu;6i)1 o lu-nnected to a battery and becomes fully charged. The capacitor is then disconnected, and the separ6i u4-i ol2 ztqkof; pe9z1,1yy ls7kr ,e)lunation 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 capacitor holding a constant charge cazb.wfy4sy32d c5k4rliixk *:uses the energy stored in ti f ybr.d25iwz3kx c *4ky4l:shat 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 capanq7(,)1 aaufejaxo ; ecitor causes the energy stored in that capacit,;ja ( eau7oqxafe1n)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 eneprq.c+xr; r 0) dec5j qoxn9c9rgy to move 10 C of charge from point A to point B. What is the potential difference betweecj;9n0 xc +rcqqe.pox 9 rd5)rn 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 movi k hzc2mg6;//2sa meewng an electron from point A, where the potential is -50 V, to point B, where the pom/;ek22gem6 wshz ca/ tential 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 electrie (9 4jdyljwl-c potential difference of 500 V. What is the kinetic energyl4w(jyej-9 ld 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 thrpe.qh ,.v p3vqough an electric potential difference of 5,evh pv3qp. .q00 V. What 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 V.l0 eo04 qsuf (jqbo 6prxda7(3 What spee0oxf4q30dj7a p6l (u( seobrqd 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 xudnu27+ ae:h24 bgw(nybbl- 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 ,b 2yrqn tv:e:lgp02dof 500 V. What is the velocity of the electron2 t2,l:0pdgq brvney: 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 x nr 6g z.0ug(nmb2typkx;+o8mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnit(8;m0y rp2t+u6 gx gonzbk .xnude 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 diffo;0mcena3:sg h0 )jinerence between two parallel metal3h;0enm :)ajns g co0i plates 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 magnituqw-r 0hca6vt k3e/zf*zae d 3/de of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what istk-af3vre6hzcq/e3d *z/0 aw 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 the east. If the vk8 s ee7ex pm-pqm1zwgxx7* +)oltage measured relative to ground m*7-s )x pxxk781m ge+qzwee pat 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 along the direction o-njk+dn7 ,1a00 kex*yhzzd;kzi z*e q f an electric field of magnitude 3.0 V/m. What is the change in kinetic energy of the proton dxj-+hqknaz *n* diz0kek1z ;,7ye0z?

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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 skl/n(gm 0 zy8yof 9r*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 fokml8(*0 gy9yz rn/s 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-V51pqm ikx r)yu7-s4 37ewi,a-npyhc b battery. An electron released from rest at a location 0.10 m from the negativ 4u-15qi)y,h -kay7spe 7ri cb3pnwmxe 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, sep+,gm2ie, m w1)xceekaarated by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m frcai)m xe,wg,e+m2k e 1om the negative plate. When the electron arrives 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 field of 50 N/C directed toward the eastdz,p.baa: +z81p17tuz caq x17yrhoe. If the voltage measured relative to ground at a given point in the field is 80 V, what is the vol:q, 1ahdxz zz7 tp ce.a8y+7u1pr 1baotage 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 elecva8nyufjpvp4 be3 d 8 9h384idtric field 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 directl8p388nu ehij9pvdy a d44bf 3vy 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 ackf/648 hshxy vquire a kinetic energy (in the absenvhhxk6 8f/ y4sce 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 potentia,dfy c/6n6f *k9l shxtl 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 en z6i zwz04sxpge kkrvl8mn1 g/ae .5th)y3 6b*ds of a meter stick. Find the electrical potential fn/yg6)v5t60i hzlr *mzkpb .x3ase 14z8gwke or the center of 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, 0). If(/e/ hfo;fci3p lvk1: hyp+ii the potential is taken to be zero ;(/p+3h: ipv1oyf f/c ihelkiat 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 is at (3.0 m, 0). If .f+ kif 94stgpon /.51h0r8y6omhia rjn np/ athe potential is taken to be zero at infinity, what iso .8mnik 5f.1apn9ni4hsfo 6g+/ty/apr jhr0 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 v57 hif0)9ymbr (36 j awrakr01tjwn iis at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work reqk63j7irav0 f) yw9ht 5a imnb0wjr(r1 uired 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 corneral2c87ujt0vj b87 xxds of a rectangle of sides a and b. What is the potential at the center of the rectanglajj2x87xb ucv0dl 7 8te 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 mu4n y: lscw02vC are placed in two diagonally opposite corners. lvwc 2u 0sy:4nIn 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 (char n 0sw0qu9)i.coy0to-f hisi7ge +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 clwf,)ohb 7j;9*x olr place three charges, each of 2.0 mC, at the corners of an equilateral trianglexf9c,*wlb ) lro;j oh7 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 ca: yekr g5 +w b i4x2zzqp/el6/oc43rwypacitor when it is charged to 100 Vxl wbg+6r / :cpo z/25qezy e4wi4y3kr?

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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 huk cgfsg90; 1las 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 wi4 le9,nffxv -ith air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what -iv x,f4lnf9e 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 p3o/qvy1 x 3ugi3llu w5lates 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 potei8x.head1 h5qntial difference between the plates is 2000 V, with the top plate at the higher potential, what is the elehxa8 1hi 5.dqectric 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 z9;ew 0 6gqgltojcv )(100-V battery. After the battery fully charges the capacitor, the capacitor is ig; ecv 90g(l jtw6)ozqmmersed 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 ca . )rlg b.vi6vde1)nuqpacitor. How much energy is stored in the capacitor?v .dq6r bu.n)g1veli)

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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 ;ja8 zqe0zjz o*wihn4 i,7.(bp+zyrv15 mF capacitor. What is the energy stored in the capacizr+jq(.4 y7pbz *j0aiz,v i;hz8one w tor?

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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 connj ) otinw,0bj: 0gls-nected to a 12.0-V battery. How much work was done in charginwtjn: -n,sg o)b00ijlg 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 t *vwyu7+qxcck*p lgf2rx3 4 o6hat 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 plates of ari) 4j fqo9bnc*0rkk7w7p hz cjp ;xne2-r)dt (ea $1.5 \times 10^{-4} \; m^{2}$ 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 ofp1e:qm,iqx 4/xf 45c*nyiz xb 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 yjp2 -c5nc6udconsists 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 capacit e: inibb25mnkyn*pahi1x9/5or 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 capacito u* 1pivpmu1li,9jd 4ur 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 becomuir+we ku6,(74i5nufqd1c k gl rg-i,es fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates i+c,g-6 f7 ug4unkr5i,r(i u 1qe wlkdis 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 conne.o yta 7sa f5h3y x6.k:hldz*scted to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space y 3ts*f76 ohyakz5dals..x :hbetween 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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