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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 p ju4*hwpu1c5 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 isf 9dpx5,z(.sw6 qhykk 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 their surroundings. Object .dq7wk9n ywx8A has a net charge of exces8. ywqxnkd97 ws 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 direct)hgt-b7bm2 w nion 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 direlidt; ph0le 24ction opposite 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 conduc*8 r0f8oqd .v zla)(sx)dps gl-pv;h wting 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 i . i*c+tptz6fss accelerated from rest to a speed v by a 500 V potential difference. If the potential difference is chantt* czf.6 si+pged 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 is3x x4 bidvo)dr+ea*+-e1+fd9h qnjws 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 su.rcx dyje78n2rface7. ecyr8n 2jxd.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mustp,nj ql3(of9l ) 8rwcf 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 vuz g*pu3s2tz op5ri0:l68wqthe electron as a result of moving through a potential difference of one vov8t lzw:r*iu go5 p23s06q upzlt 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 unitp*f; 8osrr( yu 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 corresponds tb r11blg+f /cuo

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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 charge i-* a mic v0irzo1v;v+ds 100 V. What is the absolute pot vro*v;z-i amdv+0ci1ential 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 distance of 2.0 m from a negative point char90jrld uj, m;qge is -100 d,9juml;0 rqj 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 ofwizhmgf0wu )rj e9exs; f y l663f6t)+ a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolut6 sewmziry9 +wlx)6e)3 fht06fujgf;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 potential at the center l t3v n+uydw.9of 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 a v+39yw.d ulntsecond
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 two6gc*yw, gyj5o5nub ih54f c2 z 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 rcqyso f(4ms0 /y-b 2jm1oo/6mmkt u,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 capacitors are identical in every respect except thagu ppf/ /s8an4t one has twice t/pan upgs/f 84he 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 of the plates ilacv:wbi (+ if7 ; 2zql:7ogkms doubled and the distance between the plates is halved, what is the new capacitanccl:( + ;qizva 7g:l2kf7mibwoe?

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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 parallr6qh lp6mjk. pq,6hy2el-plate capacitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the po h6qpl m2hyk,q.r6jp6tential 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 betweeslzmj/6)ot b4*kj r1y n the plates of a given capacitor is weakened, the capacitance of that capa* skl/jtj14yrom z )6bcitor

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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 parallj0sn kb)lebz6zn4 d5 )el-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. n4zbk6 n)zedj5b0)s l 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-p8 j1cz:xygkss ml x64hhf/6 nl41t9e zlate capacitor are maintained with constant voltage by a battery as they are9j 4x6hlsxszfygk6n1h :4czt18 lm/e 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 adding a dielectric material between the plates of aj:s: 43 5fd/qs -(y ;gtabnjooqq6w rm capacitor3q mntso:;j:wrbj4(6dfyoq/s5 g- aq .
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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 plu.e fjcd)r /;onma3 v,,yuin6ates of a capacitor. Whai;ucemno rf)djn u6v a/,.,3yt happens 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 between the plates ofihx r*mu d6)0esvf;s6 a capacitor holding a fixed charge. What happens to the electric fiel6hs;frs m i)dxe0vu *6d 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 m0xmy4 c:c)1dvafy /h a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no chcdy/) :vy mafm40hc1xarge 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 con:1.zrnbi moga sz1a.e5 *o.o cstant charge causes the energy stored in tmczr as* on 5.:g.1oi1aebz o.hat 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 give *mnwqsd)z fk49g8* rjn capacitor causes the energy stored in that capacitor t8 gqfd*k j)nsm4wz *r9o

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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 poiulrfqf-b7l --qav1qb/ qq /l*nt B. What is the potential differe f q7v-q*-afl qb1q-bql/ur l/nce 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, whert -)7fi/to v9p.j qeyfe the potential is -50 V, to point B, where the pef79v qy if/t)ojt-p.otential 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 potential difffkb8 hbc,:b.g erencegb.b:8b,h cfk 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 at rest, is accelerated through an ele5nro(i5u+iqf5uop 7wctric potential difference of7iiu (qo wp uo55nr+f5 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, fpurj0cp,6*e a proton falls through a potential difference of 1200 V. What speed do p6jefp,uc0 r*es 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 do in movinryd) .fe;uomtw +-noh *lf5 p; 3qca/lg $8.5 \times 10^{18} \; electrons$?

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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 differencenho 5/wc,q1 *f.yzxpav0izg8 of 500 V. What is the velocity of the electron afterwa5ph/ z *zgnc0xo8, q1fiavw .yrd?

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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 mClx anv njrv j;-,0f-1cn (8wtj. The object is accelerated from rest through a potential difference, ;w1vn0jtcvxfj-jn -( r8an,land 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 electrical potential diff(jff4 zkzx:i:erence between two parallel metal plates sep::zxk 4( izjffarated 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 parallel to/uvb ysqbpu8sj 0 no37dd**2 l the +x axis.3j82unsyov*7l0/ub * bps dqd If the potential at x = 5.0 m is 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 electrmufva:s2 e* v7ic field 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 ofasm e*vuf:2v 7 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 fiel-e0w6z -v;hz/jw .2mcuytmmf d of magnitude 3.0 V/m. What is the change in kinetic energy o- 6;j 2tmz ehvfmu-c wmz.w/0yf 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 12-V battex3a t8sd564kv1xi vh bs7z0b lry. 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 fx106k7sabvl5t4x hs zvi d8 3brom 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, sea3nzs 0x1 qdr;q;eyh(f ns3 ke9i+(cwparated 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 electron3d +0 ;x hwks1 q3;ercq (n(yazsne9if 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 c87 e65bb- ndhyfoy 4,2vmiwe 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 plateym78b2ev6c bi,5 n4wdoe hf- y. 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 zde *9 b+9uzoz/teb 9ydirected 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 ae 9e * b+b9ozyz/ztu9d 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 eg42ak r-mhtbs4v*z3 lum k.l8lectric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point 24mv* -3bmaku4lt sk hr.zgl8in 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 pote dzpb.k.35rf xay 5j9ryvrno;+9f dk9ntial difference of 12 V, it will acquire a kinetic energyxdrd;y py9 .5k5nf3vkjrb oafz +9.r9 (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 distana. +lg+dkej5c;1ja xj 4fu8mgce 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 arefkl()t. 9lclk at the ends of a meter stick. Find the electrical potential for the centef ktlkl 9l().cr 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 theo 2n(7 uspv)c)ddt9pi potential is taken to be zero at infinity)v7 (td)2s dp9uci pon, 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 uxv4b4lrr. j xv*;gl2-2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero ax*lv4r4 v u; brj.lx2gt infinity, what is 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 is at (3.0 m, 0). ziqtn)y jor: .z:t40 pIf the potential is taken to be zero at infinity, what is the work required to britqt:jy:0 oz.n)ri4pzng 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 r*o4 ejl: jtk0hectangle of sides a and b. What is the potential at tohjj4* 0lek: 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. Charg :7 rouew:o;7 bxoc0g8q4z mzqes of +4.0 mC are placed in two diagonally opposite corners. In the other two corners areuq: o0:xbomge7z8z w ro4q7 c; 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 +2e, massjp 0. pkrkw(ish xn524 $6.64 \times 10^{-27} \; kg$) 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 odql-v o j(2-fv oz37yjf 2.0 mC, at the corner-2 vlf3o(yzod vjj-q7s 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 th+q jfq :x)atzwz(r7f+xma m.( e plates of a 2.0-mF capacitor when it is charged to 100a f7zqj)xz: m.xfw+t (r m(qa+ 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+b q3f ;4xs)huhbims ; 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 wittvk72-:mx- b ie(gqjf h air, and the plates are separated by 0.050 mm. fbgxm( q-i jk-7t:ve 2If 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 capaci 5)sovjc*kl7r zz/q ft 5:;oxltor has 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 cm. If the cso j6u;wezy 75 psh(h)g6vz3potential difference between the plates is 20)o3pj g(v6zeys 65szwh7 h;uc 00 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 connec p2je7tlfl 04eted across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How muef tj7pe 42l0lch 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 q;x odx(fxx-(b16 fbza 15 mF capacitor. How much energy is stored in the caxxx1ozq f ;b-b((6fxdpacitor?

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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 is the energy stored in theo z.o.crkm(+8s. ial. ejrc+ o capacitor?.zoe+ sli.8kr oca .(r+j.mc o

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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 p-xft,u qz2h, w.r1msjlates of a capacitor when it is connected to a 12.0-V battery. How much worx1f,jz, u-m htsq2. rwk 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 3efqmg gl41g t91l) zycharged 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 consists of plates ofvj+vmk2 f t):v9dc)r6t /o:jf 5iugjp 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 plpxi1cwsli) eg3*/8 lb ates 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 capacit(x(b zikhk;8a or 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 constr5rwb* u8emz4 z*d3j aiucted 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 plate are)dsbu -z5k: pvy5y 7;c;trs h7 0pasiqa 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 batteryggrk )mvw tui40z).9x a edxb:y44 xt, and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If thexgrxtv .)bdmgua4,94z 4y te kx:0)w i 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 50ys8* 1fpf 7.rron6jvg-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills t17v6*fnf.gyr8 op j srhe 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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