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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 ie0,j8 -h: asakb nhpq7i.sm,n s 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 isg+-zpeafq:l9)m+fiz)df -/ qkdt3xkv 0pb-k 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 theio/ml5z z:wja +b:ikjao(s fxr3,1jn8 r surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a h/nkzsw lfz8j1m : i, oxjbj( oa5r+a3:igher 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 o.x1yi+.l b37cjag ltlf 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 electric fie1lb8 ;e*ajpvold

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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 conducting sphernaw2w7bds -kkw1ufxmzg6(; )e. 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 poten +yh;-l f 3olx9d2jvvmtial difference. If the poyfd3-;ov92 jl+hxlm v tential 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 the same potential is referr4w8 ljpyrmkg bb 3zk dw7m168,ed 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 equipotentiax 4 xtc9q2)s *va;v--bww//uyz ccsnyl surfacuya b-2tc/w*v xs9wn/;c sxzy) 4vcq- e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential sur9w* nb4s8 1.cs;pn xmedlwgfc5)5mev face 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 +h4thk pj bxu 6-;ab2pa particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred to as6; kph2-pu bx+ 4batjh

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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 unit ofuex o k)+-8vcoxsd4, sbw +o0o6ct-f z

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspondsp -an:ux23e;4t ph kox 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 2.0ns l5jo2rb:j 0 m from a positive point charge is 10 5jj20rb:s nol0 V. What is the absolute potential 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 di5vp2g+jcb j6yyh* 2rrstance of 2.0 m from a negative point charge is -100 V. What is the absolute potechv2y5 *rr p62j+yg bjntial 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 thx75layl-7kw)k .ivcap .sgkp8,n g2ge exact center of a square is 3.0 V when 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 cornegp.-7g85a72ypvil lkk wg )akc,x sn.rs 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 )s e:a2ey i a/:*o gr0; yb*o4mkppjijcenter of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute potential at the s0 oa2iei/:)pm eopakgs4*j:rjy;y* bquare'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 s4kr d45j oaa;filmqz52t6)e consist of 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 ainzvu(6:gin a+ /y6nj

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capso12bo vqq x5*acitors are identical in every respect except that one has twixoov*q 5q2b1s ce 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 of C. If the area cyh)ar5x-:sk of the plates is doubled and the distance between the plates is halved, what is tchr) 5akys x:-he 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 itt/msg3pa: 10 hfseruwcpk)lio7 4;o3- c,ibs removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the potential difference bet opi1oat,)fl0/ ri:-7c kmg bes;tphus3wc43 ween 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 cazawo bl- t3 q-2ani3ci+68tgh pacitor is weakened, the capac t2 io6cw8lg--+zqhti3ab an3itance 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 ccnta( gh)d 8xla4 5cp.apacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge ondhl4g.tp5(a8 a) n ccx 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 m-0fssq;,r9bn * tn qj2zp8,rd sm3opc aintained with constant voltage by ;r*noqtn0mp, jrc-p9b,q 3d s s fs2z8a 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 addqwjbw /ls 7on);o8c/q ing a dielectric material between the plates of a capacwb /8sowlq/qcn jo);7itor.
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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 pyq3wzk4e3 (oqq p a0/blaced between the plates of a capacitor. What happqbk3a 04/yw (zq3qopeens 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 betw xb+j bq.5arc)een the plates of a capacitor holding a fixed charge. What happens to the electrijr+xb.ca qb)5c 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 a battery and becomes fully chargecvjrrz; *h 9:qd. The capacitor is then disconnected, and the separation between the plates is increased in such a w :9c ;r*zhjvrqay 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 holdi3fdla : z n(,34mnoewmng a constant charge causes the energy stored in that capacitnf(aw 34mdz:l3 on,meor 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 stored inl,krs.b.jn+nnkabe r ce11i qc4hu/m zy.7-: that capac/be41cr. .nc- k ijyskq alzm,e :+bunrn17h.itor 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 enerv: np soht95.kwylj1 *gy to move 10 C of charge from point A to point B. What is the potential difference between points A anwl9ptj 5n.h*okvys 1:d 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 pointu-0 b-c8 elba o9c9faq A, where the potential is -50 V, to point B, where the potential i-lcu9f8baeb9-0 cqao s +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 thr/oru(lj,,fx4vtu4do ;bl3w hough an electric potential difference of 500 V. What is the kinetic energy o44,(uwtluo fxh,lov 3 ;/jbdrf 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 electricj t9ym.po4p5myj jh 9/ potential difference of 500 V. What is the speed of the pr9t5j9m. y4jppoj hy/moton?

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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 pog6/iwsq*izdr1(jzttzoa a(, 3 4 sfjr eu0 ;e2tential difference of 1200 V. What speed dw t(e2*u;asfzri q(0g6,z/jstardo 1 4iej z3oes 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 lt)/8s5 oobbn 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 potendut qqa 5dnmj2l(gevto;x 8tm9 5,5 8ctial difference of 500 V. What is the velocity of the electolv,5j8 d q tx92mt(t5 a;q dmungce58ron 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. Th mn;g 82bu4l7dtp+pyre object is accelerated from rest through a potential differencedpgp8y+bt 7;2 4murnl, 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 t,:gjjd8 e 0hptk7(lbbhe electrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electricehbbjkl j :p(,gt7d08 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 par7+rd6p)gjew, 2cfpy* gb z(jzallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at x = 2.0 2fgdp eb zwj6(rp,*y)g+7zcjm?

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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 dix(5gyg+de7 p qrected toward the east. If the voltage measured relative to grogd5+yg7ex(qp und 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 an electric field oeu iw5 ;za9xz0xe jv45f magnitude 3.0 V/m. What is the change in kinetic energy of the prz95w4 x 5 axeej;z0iuvoton?

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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 c9wm qq2b d )f;pw-naf*onnected 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 af q2b n*)9dpf wm-q;aw 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-V ba y 9 jas drqyst3jy 1-/sg:tm8jo*ml rg2*7,rmttery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a dista /tmm-:*q gaydg*1ysj,tl rjr 893rossyj72m nce 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, sepazbv55rdp u*;iae jh4ve7zft7/fap -* rated 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 plate. When the electron arrives at a distance 0.050 m from the positivzae7v5frh*bvj/4 ai; e*uzp t -57pdfe 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 on63/nn;zoplsk2g2 ov2mk , a east. If the voltage measured relative to ground at a given point in the field is 80 V, w 2zogna/k6o ;lm, 2 k3onnvsp2hat 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 e/wg,rqh /gqy*o x/ ku4q4zt8zlectric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field z4/*8yutkq gq/g qowhz/4r, xis 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 wio* 4xwd6vfc+xll acquire a kinetic ecx+6vwo*d 4fxnergy (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 distance olewn at2 zgb4in pj2+au, 3 tl8-l1jm7f $5.0 \times 10^{-10} \; m$ 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 e8 u2 d4gij-jolnds of a meter stick. Find the electrical potential for the center of the meter sjgi uod 824lj-tick.

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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.wx.cuwvxk ut6n22vh*: dhh6 70-nC charge is at (3.0 m, 0). If the potential it2*:wn 2xhh6uuxhd.k 7v6c wv s taken to be zero 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-n8up gr 8ru76h czylh4zk*91gpC 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 chargeupr 41zukp8lc9g zr 6 y*hg87h 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 is pe +bd;5 g vfwau829zott1 g+rat (3.0 m, 0). If the potential is ar2t+e gf 8ogzbpuv91 d;5 t+wtaken to be zero at 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 equalh 9sgsg oxv+)e8/1gejpg 3(uu charge +q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, and b = 4.0 cm?+ps ue )/vx8g3og useh(1 gjg9

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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 pll;.xr1hg.ldt dcu:qf+ :+jla d4vu6 m aced in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in the s d4d uar :1vtu.6:hl.jf+lmdq; xc+gl quare'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 /n )j7o:qmvo edc 8rnp*cl 7u;$6.64 \times 10^{-27} \; kg$) 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 2-6nqt.: 7amkfqjc:gx/r ws4 b .0 mC, at the corners of an equilateras -b4:c6j.w qtgrf/akm7xn q:l 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 plates of a 2.0-mF capacitor when2 qm qvj)xmua 8s(wh(c,* xve: it is charged to 10x*a q8)uv:2vshmmcj (xw,e (q0 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 caps-c; rne29lm/w0q spr acitor 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 the wz 9n6;jzwk 4 ot92 +my+ maygy)*.azjnkgr,n plates are separated by 0.050 mm. If the ck+mmj692 4r aoj);zatwn.g,9 zk*zw+ g yyyn napacitance 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 of areazm 3rrl(/: t;w: bddoy $0.20 \; m^{2}$ 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 ar0(5ca, sodpx-d: tm has a 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 between the p0(d:s ca,p5r oax- dmtlates?

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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 th t),daoyb : pkcr,+do6ta5 g5me battery 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 conca)o ,5d,mo6d+y p :t5rtagbknected 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 placp5(6 vl i6late)0 kduj+q jpt*ed on a 15 mF capacitor. How much energy is stored in the capaq*vd5jt t)(lp 60 puj ekl+i6acitor?

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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 g*s4dmy bllxxly mwf04tke q4/sw-(7 ;u;0lc15 mF capacitor. What is the energy stored in the capacitorsqmsx(*4cf0euw ly-; /m7b04lg4 ; ylklwx td?

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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.i n3r.g c-*oggpp2e t is connected to a 12.0-V battery. How much work was done in charging this capacitor?og pnc3pr -te* .g.2gi

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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 stq;;.t-h;-*lgn ff cpw i,q vjmores $2.0 \times 10^{-3} \; J$ 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 plate., wafrvm- a c02+cp7:zdliwlk 2bna3s 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 of arex0jokq:u3 vpy e0.:lxa $1.5 \times 10^{-4} \; m^{2}$ 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 capdtuxyzr,.fm ,e4a-gj y b1h*. acitor consists 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 capacitor is const,:gm- xdve*suk4sx8to8/fjm ructed 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 iw:sf2.mvjhm 9i+ lozo:nm .m 3s 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 connecteddt/ *b-pi3r 1 -yu (1vof.jfsnt)ybcu to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space 3ufbupct1b - .) ynrd*sjf(yi-1/o tv 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 battery and becomes fully *l,xz h57n(az4anvluofb813lcue (c 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*f zb73c (nzlv o4a can5e1l8(xh ,ulu.0, what is the voltage across the capacitor's plates after the slab is inserted?

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