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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 b2,bf-kp lwb k9(;fly)s wp :iis 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 is avpl8t dgw0/ (s -lqnzkd/12gz

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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.tvk *:t ak48au Object A has a net charge of excess electrons.t:v8tu*a4kk a 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 el8s e r 6lwt4z1hm)qum5ectric 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 t w.v pk,-j7/ucuh*smnq6u9v go 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 conducting sphere. The76 p+ddpk l7 msm3sqeb1 5mok0y

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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 tohk)eqal7q j*+ a speed v by a 500 V potential difference. If the potential difference is changed to 2)* hqkjeaq 7+l000 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 pj;+isfvw3 z g z57x5udoints are at the 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 point A to point B along an equipotential surxn7:c7*tquz de (bv5wyz lf+4facez7dcul + bz7(4w5vxqfn: ty*e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfrhgqc;t/ 179y pk gb::;fgkahace 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 charge7 v0rh*s (ezf s10vzoi equal to that on the electron as a result of moving through a potential difference of one volt is referred tovs(*0 0vrih 17zfoz se 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 unit /af 1nlow9:l4xxbd ; jof

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt corresmi* u lp0 krrp )u4utv1e2s+q:ponds 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 47wtdmtdsxt g)d5 r5 griq48 ;point charge is 100 V. What is the absolute potential 4.0 m away from the same p7) r 4t trts85x;dg5dw4dimg qoint 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 0lcttbj,.d))zc(5+hh 5qhtkadw* pefrom a negative point charge is -100 V. What is theahhj*0lz(wt)q+h ted)., 5btdpc5 kc 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 0wty,u(trfj j-n b/r (center of a square is 3.0 V when a charge of +Q is lobruwj/t(( 0tjyf r n,-cated 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 whenzfnb0.sot owx)g/ l+-vyt 7l0 a charge of +Q is located at one of the square's corners. What is the absolute potential at thesto+zl o wn)07t0y /-lv gbfx. 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 consisty.sk9iwv6 n; ,m vnth* 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 hdhq-530 oikfu,/wp g a

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capacitorss.+. pstht 8fe are identical in every respect except that one has twice the plate area of the other. If te.tfs+ thsp.8he 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 c sv:,sxc7m qh57 z4bmjapacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is ,mqc7z7 xvh: 4bsmsj5the 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 capacit gyk f9r73-0q1 vubkbdor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of char 0f7burd9kqb 3gv1 yk-ge 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, t8g5 eh 5toi/hzd5w-dk h k*i9yhe capacitance of that capaco5ihkdz*5/ 8g tie -d9hyk5hw itor

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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 c9tso45 skx4 tqapacitor are maintained with constant voltage by a battery as they are pulled apart. During this pqk49 s5 ttsxo4rocess, 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 /xs6im2izf 3sconstant voltage by a battery as t ix sm/z2fs63ihey 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 a,5fe u fapt:f(jy*c( cdding a dielectric material between the plates of a capacitor 5cayt up(e*j,f:fc (f.
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material shj74uv dvt71)rm6km nuch as paper is placed between the plates of a capacitor. What happens to hj)nmv17kt7d v 4r m6uthe 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 asfe0m g0gljujyr ,:43 -r qsc;o paper is placed between the plates of a capacitor holding a fixed yo4sj 0qr,gr-fu3e 0mjlg :c; charge. What 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 a battery and becomes fully charg -hc.7-c jlm eg/(200zm ccm ohy+cazued. The capacitor is then disconnected, and the separation between the plates i-u2 mc/hcm.lahzg+ 0(ccey -0 ozc mj7s 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 causes the ene9n/dd4 ) vgonvrgy snvv)dn g9o /d4tored 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 across a given capacitorcaeo :lx3t+/ qfw(u- y causes the energy stored in that capacw x3t+q y/ efla:uc-o(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 energy to move 10 C of charge from point A to point B. What -39cmvx, j lvnd1 ma8lw-9yn0dqd3pcis 9al nqxv dw3m0j-p ddl9cvncy83-m1, the potential 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, w.2lo i/kootly f51p the potential is -50 V, to point B,otl.w5 o,k lif 12opy/ 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 electric potentia.p;mh yy)qk f38 :bddr9jvrm.l differr:.yq8rb) 3vp.mdd;fkmyh 9jence of 500 V. What is the kinetic 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 aqz /68pi3b7c:b:vx eb.93dgxtmdq fjt rest, is accelerated through an electric potential difference of 500 V. What is the speebqi t9c6 mx:/xz.je qgpbd bdvf: 7338d 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 1yjzsc92w al3 difference of 1200 V. What speed does 2yjz3s 9ca1wlit 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 movuveg .y+r 62,sqw+gi aing $8.5 \times 10^{18} \; electrons$?

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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 acceleratw00l)w .xlhu)ivc i/ wed through a potential difference of 500 V. What is the veloci)l 0.w )wcxi v0hlwu/ity of 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. igr /lmgq v4g/k4/v6rz gw6o6bqm .u4The object is accelerated from rest through a potential difference, and afterward the ball is moving m 4/qrv4zqw 4g/glbur6 k6o./gm6vgiat 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 pothqk6e6-mz4nh /fwq7+l vs(jtential difference between two parallel metal plates separated by 1.0 mm. What is the elec(lw/fqm+-6kh z qh stnj764evtric 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 mwro0by; :-zkc9 c+ yakf*p,z/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, wh ac;or0-fmzzby+,: 9yp *kkwcat 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 N3fc he1xia5wj0/ e2w g/C directed toward the east. If the voltage measured relative to ground at a given point ishwie215 cxg /ea3 0wjf 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 magni, noqt12/kd.vatsf8d tude 3.0 V/m. What is the change in kinn/ dkd,vtf .ta 218qsoetic 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, separac- rp v95nwbl+e,vyr*ted 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 1.50 m from the positive plate, what is the potentia r-nw+y lbv*95 revp,cl 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 12m8a16o: s jaj0p,b9wu64ur4idsf lct-V battery. An electron released from rest at a location 0.10 m from the negative plate. W6w 90j,pbst l:uj6duric8m4a s14f oahen 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, are connected to /ek 0nv2rxnqitp 7+;la 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 f+qt07pvn i/ n;xkelr2rom 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 52plujw- )e:kd2(f bqw6tn8aas :df3 lzdtw 6 toward the east. If the voltage measured relative to ground2dq6tju dsn8w:3b6l w)dzfeap(twl5k2 af:- 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 towar;.usbzi i-r9i,e 8 p93prjwp zd the east. If the voltage measurp9s; r9ip zj b3 wpzui8ie,r-.ed 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 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 potent v.5-lgit1g eeial difference of 12 V, it will acquire a kinetic ene1g ilv et5-.gergy (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 of x ry/ujf ;qmra06-f.z $5.0 \times 10^{-10} \; m$ 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 stick. Find ciy 80g.xd zmk:o.t .q 16scgovu8n1wthe electrical potential for the center of the meter mg dz.yqv6 w0.toikuc oc:gx1n 1 8.8sstick.

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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 ch0vraw a+a cvs 1*:4gqfarge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential at point (0, 4.0 m)? vga awf:r qv+0cs1*a4

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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) nd o+nm*zwnkw,u +q,- 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 o+zkw ,-*nwuq, n+mdn 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 is at (3.0 m, 0). If the pz lthy q/:t 5rgv9k(u4otential is taken to gztt:r/4klvy(9qh 5 ube 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 equal charge +q are placed at the corners of a rect,xbdeskc7g/*u cq. sy5cs; hzq)f/k/angle of sides she dbz); qgc scckyqs/,7u /k5*f./xa 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?

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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 + h d6wud9qc/q*f5-scd 4.0 mC are placed in two diagonally opposite corners. In the o d /cqh95sdwqf -du6c*ther 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 +t1pj+z 9y.anzi ii;:n2e, 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 : kj/shva7jr3 .uf2 ixof 2.0 mC, at the corners of an equilater/x 72hjivjk .ua3 :rsfal 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 when it rsak+x8t)o 4 lis charged to 10a xt 4rkls8)+o0 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 capacitormhwal isz .+e839s7en 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 plates are separaw i4(e/ ljsh7q.gcd f(ted by 0.050 mm. If the (4lieq hdgjsc /f(7.wcapacitance 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 areb5p5x1 3maenc pyt,16eo n vki79jel0a $0.20 \; m^{2}$ 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 potnl,i cbrx ,hlo y0cfsc-f5ovg45 k (.3ential difference be-of,csb hr4 l,(nk cvo053.clx5gf yitween 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 batter q5t 3syo8.,vqyhasm 4y fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much adshomav,.5 q s4yt3qy8ditional 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 capacg1p:ipmgxl*(e6i 9qs itor. How much energy is stored in i g msp1(ge9lip 6:*xqthe 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. Wha j.)u 1y67cg hgpylnr+t is the energy stored in the capacitor?7c .h61gjngy)+ rlpyu

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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 plat7xao cmpc+bjc5mp8 9m2(3 dwbes of a capacitor when it is connected to a 12.0-V battery. How much work was done in charging 3xwcmb27cba9 mdj5p(c pm+o8 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 l1o s))s8bh hnis charged so that 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 consist -n e8;8r6 gemgm*ges*de-mgas 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 0rtphv sc6 7nr8tq*pet:x 6n r4;h2fz7 kxcg7consists 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 ac g7sp1 )+hggo+fra;nrea $1.5 \times 10^{-4} \; m^{2}$ 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 areg(nveumbjv.ttd c)7qq0 z6-y:;h v6n a 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 ism z(3zfk 9w qh (w pcsa6g1z/d3,j*ssn 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 2re(93bq)9a 7dowgs7ox m2w pjq+z bubattery and becomes fully charged. The battery is removed and a slab of dielectric that completely e 9w x277oz9w s3aopjm(qg b)+ bdurq2fills 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 battery and/q9f+f.v r..ls*jg.vm.3u6o xj rr( amr gafr 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 constant of 5.0, what is the voltg mr o .u3 vv.ff/a*9. j(qs+rm.jr rlax6r.fgage across the capacitor's plates after the slab is inserted?

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