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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 not a vector?epkdwc7uvz9(6b k2pv8i7 h )f

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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 woq5zvhw x02 igy72hjehs+6 3a

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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 surroundings egvykjjyet5/ tk 6 -83kffehe2 38;xv. Object A has a net cha3e -8;yje2e f68 kkevt5x vyhfjg/t3k rge 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 elect c3ai)owp 3q.tric 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 op**lh /nxv+ q ym5r5ldpposite 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 p6g6t2 qfkdl2xlaced 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 sl p6ok/hctg(p/l n3k a cfqlgo;39b7;peed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new speed of the balkcga7foon/ ;tk ;9qp (c 3gl6h 3/blpll 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 sa -l/6i,+si zuaddhaj9me 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 equipote)xccw5 ,tc wosg42(ocg hq,w7ntial surface.c)7cxc qt 42 (owcg,sh5w wo,g

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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 bynwdov *p-s6714*yjj n / yqpze

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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 chargefwd3s a)q0 r*tv x;ez:. z24fipt0bx g equal to that on the electro04gzx;3:xdvz .f sa*0 bp2ftt)e qwirn as a result 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 unitviq9ze 4t+j 5d 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 corf cd.r91z.puzc45fy h7r wv9wresponds 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 chargec* z(t.k 6 ln.mfwlunls9l9h ; is 100 V. What is the absolute potential 4.0 m away from the same point charge?c.nslu l69t kwf.mln9lh(z ; *

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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:pne xs/me ou2yaih4(6pg, 9os -100 V. What is the absolute potential 4.ppo4(mgs y9ae neuo i: ,62xh/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 whe4jce0io+gvd f dv;i y 0lb6*5zn a charge of +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 0cb5yl 4g 6;d+jvd* ioivf0zealso 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 squa - tj+dtnmtd;9vu37upre is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute potential at t;mdpn 9 jt-tvuu37+dthe 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 cc* /eoim;//*lctztr i:w0qp hharges 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 as98dm x enu);w

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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 e5b*k-f lib:;ez fdfg:xcept that one has twicfgif- d e :b:blz5;*fke 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 capacitance o:/y 7 7jr/rjkxwf b:wwf C. If the area of the plates is doubled and the distance between the plates is /w:wj/ :r7rk7jyxwbf 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 r(dcshiul, ( k/emoved. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens(lu /kd (hc,is 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 the plates of a given capacitor (ub )0ilfe+sa is weakened, the cap(es0ul+)ifab acitance 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 const4/6fzyzxp liui3( ib ;ant voltage by a battery as they are pulled ap6z ui34pi/(lzf x b;yiart. During this 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 parallel-plate capacitor 12ren)c (sfaxpk 1s-r/zfl1fni s92 zare maintained with constant voltage by a battery as they are pulled apart. What happens to the strength o1ksns 1f )zfx1p -ze/nlra 2(c 2sri9ff 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 (66ynw ij:nc fthe plates of a capacijfc6n i:(y6 nwtor.
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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 p -fakjec/.ww va9 zzf7 k-+hjtj -gn(r:qc5f/ aper is placed between the plates of a capacitor. What happens to the cwq9e : f-/z7vn c/fg-jfk(hatcrz+-j5wj k.aapacitance?

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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 pape*i)jqi +bfvu a) yar+(r is placed between the plates of a capacitor holding a fixed charge. Wia*fayrui)q (j + b)v+hat 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 to ab /se0wc+f,n*llkfb ( battery and becomes fully charged. The capacitor is thenfsc( ,ef b0l k+*wn/bl disconnected, and 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 capacitor holding a coxtc dun3 qh,-5;a(x osnstant charge causes the energy stored in that capaxa-;q 3, ncoshx5 u(tdcitor 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 sdhyh;z f:qc2 -tored in that czqdhf-; yh2c: apacitor 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 *zmkv.1,zd *of0zcjm/9l6g cv j(ne l to point B. What is the potential differ(f.0*k1/9 ,j cm moz*vg6clnezjdv lzence 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 mov9 ie((mpuhnw rq/w 4i;ing an electron from point A, where the potential is -50 V, to point B, where the potential 9qw 4ui pnwi((;rm/ ehis +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 en)r39k f 2cpiboyo4t 9lectric potential difference of 500 V. What is the kinett2b9cyknoi4) 9pr3foic 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 restqi +p(oz6q h;)+g.odjxy yh *h, is accelerated through an electric potential differenh+.*jzy) hopd gy+ xh iq;6oq(ce of 500 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 th np1 4k4w2mcyvkhmm od0 .9n5m9um0bwrough a potential difference of 1200 V. What speed does itkk1nm 54wvc.pm409mu mob2hdwy09n m 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 movingvk*9zea ml6dtenm-w4 b x;q)tc y;c6cj09b 8 s $8.5 \times 10^{18} \; electrons$?

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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 differ n8a+iu1c5itt * gclm;i41snlence of 500 V. What is the velocity of g l4ai81it5cnus ;tcnl*m i1 +the electron 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.k5xt9ktzg w) 6 The object is accelerated from rest through a potential difference, and afterward the bak tw5kzx)96 tgll 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+ s8a8vygsk6d difference between two parallel metal plates separatedgyd6k8vas+ s 8 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 magnitude of 500 V/m, is directed paral(h 4r snnsrw+4lel to the +x axis. If the potential at x = 5.0 m ish+rnn(s 4rs w4 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 the east. If the voof,:n5oy va e9ltage measonfo ye v,a95:ured relative to 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 along the direction of ansy )imp4 h(xk( ydl..x electric field of magnitude 3.0 V/m. What is the change in kinetic energy oh(y4 y mxs.)ix.kpd(lf 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 grf o.-x2j2qlr a9 kk:y5:eg4+oe iq m: napn612-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 between pm aqyjl-arr6+exq: o:io2gngnf4:2k 59 e.kthe 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, 3 + /v0 ek)bn1wdfhpisare connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative pfis p dk1ne+wh0v3)b /late. 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, ar(4i2sofwcf7:4zyfhy e 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 electronw :yf4z7 os4(ff i2ych?

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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 fiel8q b2)qdf1ie*ankz h+d of 50 N/C directed toward the east. If the voltagehqbk )efnq21 +a*8izd 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 directed toward the east. x-mk/mur 0/ql(fy 74u zc2 zvk If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage 72mz mky0l cx//-u(vkquf4zr 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 acquikr1 npux f8lw 6:yw0o3ju.6ewre a kineticww86:jfu .1enuopx3k w 0l 6yr 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 di ms 4a xyg2r3m;)l1sru:3icfistance 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 meter s r/yy8jyon;r 7tick. Find the electrical potential for the center;7r /y8ny yjro 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 7n,u lect p42u db+b a2cmnwpo .y*c/lc1f.8gm, 0). If the potential is taken to be zero at infinity, what is the eb2nb g c u1l cl/c7cno*tf.p28.de+ya,mu4wplectric 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 the pot1 isb 0f9b1xd;7fxd tcential is taken to be zero at infinity, what is the eldd0fsx fbbci 17;x91 tectric 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 -2.0hk oy dt:vw q/x.eulpv 6o+v18be.*i.-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 from infinity to poiq id61k.8ptvy*w:v ueo b+o.l /v ehx.nt (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 mrbg w4iy;0ds .c4gru6 g6ve8+q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle ;bd4 8s wyvr6gr0g cmi 6eu.g4if 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. -ndl):ne2f)w g .wz .akj kn9k Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two cornersdw:g2w.j)z)fn-na ke klk . n9 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.4(9wm:w2lrki21 iu azs zhpyge +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 of 2.0 mC, at the cornvdp hccc/0u f/t brz58og* :e3nny(uf1 i6-bz ers of an equilateral 1ytp5 c:ucb0r* nuv/ eih- (fo68db3cz/nz fgtriangle 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 charged t :0y 2plz+c3btczz xa7pqz;,l o 100, a3l7qp2 xz zzcplb; :yz0c+t 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 capacitor has plates ri 9 ,4k0hiqzv -da/yoof 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 0/yqg ,kgry 0- 4ftgtswith air, and the plates are separated by 0.050 mm. I0 -kgr/sg t4,tgyf q0yf 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 h+og yp4. o.g7 0gkcdxtas 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 ccqwuy+)lbn9) u, pvy5wz, e ,mm. If the potential difference between the plates i9eul),v5 qnw, mbuzy+ p,)ywcs 2000 V, with the 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 battnsgtn ;d-op9( i7tyr3,sokg b b*2q+very fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional cn2;bdb,3niqv kst(-7 ygrop t*sg +o9harge 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 c** a6ste+ck9hfv ev: nwu(v(placed on a 15 mF capacitor. How much energy is stored in the cap vafw * e(c*t6c+usnv(:9hkev acitor?

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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 capacitdg(h5/8 6hzk op0 pplpor. What is the energy stored in the capacithhp/p8o (gkp6d p5l0z 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 kbp;g c8e;pmhy ea6 4o p-):mtcyc5t/flows onto the plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in chartm6m8p p-y ckhgeb;a4/ot)pe ; cc5y:ging 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 storevp9l( ml16kg jzfq/(y s $2.0 \times 10^{-3} \; J$ 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 -zvo0 d,x7z ( /jkvpwwplates 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 c/a;k 7 c rztfgw:c yvz184(xwconsists 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 of area 6zyn:az lg6 9b$1.5 \times 10^{-4} \; m^{2}$ 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 construc /4zi 4wpsn4r;ujlr -m.z ryo +l7kgw/ted 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 plf / xl 75dev9ow,:qenlate 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 cont :ncfz 4ph no)f/:unsg/1 xo.c0sm:enected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielect un/hxemcn1c .s gn) s:pf0:o/f:4zotric that completely fills the space 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 ba r8;1q gh6h5dcop 6euwttery and becomes fully charged. The battery is removed and a slab of dielectric 5drpwc 6qo1eg6h 8h;uthat 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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