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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 n2ff.p6shmfy8b;*uk8wxvk4 eot 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 i + f34ms zh6zvf4u ftai31zk0gs 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 object s n 7ejgcj 6((xq3mus6rvv*jz.w-2w)ye c6 hrs are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounzxjj(6)wsj.c6v nve h(rg2-6qec* u3wyr m 7sded. 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 dg nyagz76p4v3xuwx* 3irection 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 opposite to the o+0) lzs;5nu l- 5ejgkqpp)saelectric 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 conducm/rd25 l gluo u2a-m(thdu1y3ting 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 acceleram9k j1fppd/k- ted from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2pkk9fm- dpj/1 000 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 spktjw;: mu22-w w5f 1hnf,essame 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 moved3xkf w*flueog5 cw8m-5iw l)8iu*vx ( from point A to point B along an equipotential surface fx-xg*5v5wukl w*uw( 3loi i8f)8ecm.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfao: k4vixqw* e,ce 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 equal to that on/i5u59yv qm qf. z-y0osbqa f4 pkp,c4 the electron as a result of moving through.sqm iq/4uqf 4-5 0 5czpfyvbo9y,kap 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 , g6u-*j:v ql0;jh ubn)ugdad a unit 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 corregfr/sm bya( wzt *i3-f w*0,hjsponds 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 9d:l hqbukt/25c1put x e0b4qpoint charge is 100 V. What is the absolute potential 4.0 m away from the s 50u 9b4/bulp 2ectdkxqhq1t :ame 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 isosy t)q 6o7/aw -1s)w7tyo /qo6a 00 V. What is 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 is 3.0 V wpq9 0kqoj6krs+4j/u k;;g lkvhen a charge of +Q is located at one of the square's corners. What is the absolut4+gpq6j9ksv jl0 qku/okk;;r e 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 potentialr g4o69g.fcvl at the center of a square is 3.0 V when a charge of +Q is located at o. lfg6rov4c9g ne 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 *o0eniyo n78q 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 a muqlf 0hftj-)8y 23uzio9 o3q

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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 rexzspjp: : ts90spect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capacit9j0p px zs:s:tance

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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 plates;uoy .9 ivweftc e;09rhz;x *s0b:rls is doubled and the distancu*9 lsc9se h w:0;; rrovt izey.xb0f;e between 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*)arvxqan*p gexx8kbn /;b (; removed. The plates are immediately pulled apart. (With the battery disconnect) bx 8;*;(a exk/bpqvganrnx*ed, 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 the plates of a given capacitor is weakened, lvm+tt frblie7u; fm,x .k 1n1h20dm9the capacitance of that capac0lldmfr 71f vbm9 1t n+.km,u2eih; txitor

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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 withc*nu9 mte5/ tx h:jon6 constant voltage by a battery as they are pulled apart. oj95hue/:t 6* mntcxnDuring 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 are maintai-(m,zb n 7vp7j0ttzjpned with constant voltage by a battery as they are pulled apart. What happens to the strength ofn j 7vt0j,m(ptb-7zpz 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 th 1a4lwmq ca35ge plates of a capg15 a3qm a4cwlacitor.
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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 capacitor.u qc 5gza2alr/f1ayz3b*f n. 8 What happens tocy138.glnzb */zq ur2afa a5 f 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 the plates od5.wx9c6(sj m3 lukq;m,a emw f a capacitor holding a fixed charge. What happens to the electric field bemcjw5.;l 3(,9qwdmsku exam 6tween 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 andrm457v a*tnvi0zka 7a becomes fully charged. The capacitor is then disconnectedv rm0* niv7ka tz54aa7, 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 .luu,5uq ab.v*s fb hv.i*6tq a capacitor holding a constant charge causes the energy s.*tfubqvav. u6is*uhql5b., tored 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 acros qc+:*dysnip- s a given capacitor causes the energy stored in that capaciton*cps -+diq: yr 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. Whaqe0 qd:v,skr 9us8;uut is the potential difference between pouk0q 8r9s:,ue v uqds;ints 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 p*u z*kb/x yr4dut*;o4(b ous electron from point A, where the potential is -50 V, to poi *;/ob4sdzkut bp(** rxuo4uynt B, 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 e j5llf: 3dwkejh*p4 u8s0(v mmmpow*8lectric potential difference of 500 V. What is the kinetic energy of the profl:vw*sd3oj8mhew(j mppkml 5 8 u4*0ton?

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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 do4)ptyzr;p;z * zs2g tifferencezpo*gt;ys4tp;z 2r)z 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.hbd *meud/z; proton falls through a potential difference of 1200 V. What speed dmz .*/de;h ubdoes 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 kr*f +)na ywa9jq o0j;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 differenc;a,*l) pufgss.m 8zsg e of 500 V. What is the velocity of the electron after.af z8ssup,gg;*)l m sward?

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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 objectnm y r sk6kmk a:rl6f*4.wmlv0+gj7c; is accelerated from rest through a potential d*66; 0v .smkrnk cmg mak47lyflwj:r +ifference, 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 q02 kbvs3s2zvelectrical potential difference between two parallel metal plates separated by 1.0 mm. What203v sbvsq2 zk 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 parallel toe s3z8mv5w ,xl the +x axis. If the potential at x = 5.0 m is 2500 V, what is slz x8wmv3e, 5the 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 fizimwr.k+, au/4yl /z xeld of 50 N/C directed toward the 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 directly west of that pointx+ .lima/r 4yz wuk,z/?

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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/i iz- s8)xug ifx5i;t the direction of an electric field of magnitude 3.0 V/m. What is theix-5i 8xi ifzugs) t/; change in kinetic 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, lj1c*fsor6js*bg:x ac - 8h6kseparated by 0.20 m, are connected to a 12-V battery. An electron rele ja-6xl f8:kjb s cs6co*g1hr*ased 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 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, aljk3* y+q9l5 k*xdwi hre 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, how much kinetic energy k9y* wjxl5d kqhi3*+ldoes 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 batteryiv4rnda;hxg qwy53o( y3 v;ybi9tat5w0 (t 6 k. An electron released from rest at a location 0.10 m from the n4 yit9 ;ibnkv5q 3x vwa(;tro(yg 305 hyatw6degative 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 elecm6(t3 zjm21 caoh4dk otric field of 50 N/C directed toward the east. If the voltage measured relative c3toh moz2 kd(46mja 1to 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+d6t, zzrfo fdzc xj*3o.4p c. 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 directly south of that poin,3f+ 64p zzd.dtoro.xfc* czjt?

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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;ak30il5hry qj ol f79, it will acquire a kinetic energy (in 9h 30l;jif7qrlyka5 o 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 potentiaej3+m,l cx +iustr 97vl 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 afc-5gev :)ko wre at the ends of a meter stick. Find the electrical potential for the cent:ow)efv-kg5 cer 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). I1q1a m xws5bi9z/lt0 3oay2o sf the potential is taken to be zero at infinity, what is the electric potential at poin s09 iy1olxza3a1qs2t/m5bo wt (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 -2.0tr.wv( b-8kmv-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 at point (0, 4.0 .b m- v(8tkrwvm)?

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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-nqr x 9:gpti3r2C charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work requix2:rp3g qrt9ired 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 pl3x k-cx3 r ck s8mwbars)2)bp/aced at the corners of a rectangle of sides a and b. What is the potential at the kcwa-8 brsx3 r2k)/p)cm b3xs 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. k./(pm0695wnmjpo /wzr rtuy)d9cwq m c :lo(Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absm dm q/.rl6/czo(j nk0 put my95ow:c)rpw9w(olute 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 (chadnqv5x)i oin771jaw7 rge +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 chargelt ;m::blndjjw m9;xkr zs.((s, each of 2.0 mC, at the corners:;m;9ms((wnlt z dr: jl.xjbk of 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 the platertzu+x6dmya arxc 26. .15gmts of a 2.0-mF capacitor when it is charged to 10m.xx+ czt6rdm5 yu26. grta1a0 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 capacito;6 gbezeek:aunn* 5(t7 leay9r 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 capxwyexne2,c 9.acitor is filled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate2nwe9xy xc.,e 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 of;m hy(:dlms 7z .qh31 qcw;g4 x1bsoal*0kh yp 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 potentib(d/skdr b2/l.zr*v nfrt/ m5 al difference bz/l trv.nbk/2rdsmr/*( fb 5d etween the plates is 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 battery f q49aljugun/t. b;/va6 jlj,fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remained connectedagtl,jv// b9uf 4n laju ;.q6j 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 enql0wx8:fn-0 e3 ab xymergy is stored in the capacy0a0 w8 mxfeb:q3xn- litor?

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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 ikz+i+e /nb j5/-xa dhas wdl79s the energy stored in the capacito7idxz-s w k9hn5d+ /bj +aa/ler?

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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 owp9lhn;teu ( v6 :67 ;qhsadcmnto the plates of a capacitor when it is connected to a 12.0-V battery. Ho6tphnlc:udh swq7e ;; 6m 9av(w 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 that it stok,(em3 wa ma,ryro7fbyj* g6*o:6 s vyres $2.0 \times 10^{-3} \; J$ 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 consistso +c e1wqots/3 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 coi)(sr bn/7 oghnsists 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 .g0 fbkv8+.2n ckoqlbarea $1.5 \times 10^{-4} \; m^{2}$ 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 capa 9vkmb9g/k,wy citor 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 capacitors,y jzx3-2h+x cq8ixe 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 becomes fully char lre1vyyp28o3o8gm f:erst40ged. The battery is removed and a slab 0o8vmepyrs loe: 8gf3 r14 yt2of dielectric 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 isapiq6(bklmu (ybrt 7 lmq11,* connected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely frpluq(qm 7t a6(b kli,*y1 mb1ills 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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