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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 vecw q4+6mg*tq1 aubc uxopa +x54tor?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulomg8f) efzyft.n bh/fj5 a+5q x6b is 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 w;4u2qngfh u 9objects are insulated from their surroundings. Object A has a net charge of excess electrons. O4nhqwg uuf2;9 bject 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 wk /vi,gc lxlm i02/2din the direction 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 movinviy1 1:sxw.dp g in a direction 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 conductinmxr*s n , sd,16kpk8 c 5/xxynnzn83fdbx6- dvg 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 speed v by a 500 V potent vvmh;w5xmga)x3l i5)ial difference. If5 ag)x; wvl5mvhi xm)3 the potential 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 refer ;jbuz3 1:aifzred 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 po 8qoiy0yy .ms qzr94x:int B along an equipotential surfacozyx :80.qqrmyi y9s 4e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface musb.py1 .e++yq cu 9oxobo4or s(t 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 tv(.asz.s2qz. wapq( r p;gyl5he electron as a result of moving through a potential difference of one volt( s pq v;(.zg5aq r.l2.pzwsay 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 dahpb e95cq, n, 3)wdya 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 corresponds t bzele.a s ;o4c34vyt(o

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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 u b/+6z k2. kv6ili cqpbavt.2rq1l3mpositive point charge is 100 V. What is the absolute potential 4.0 m away from the same point 3kpk qq 6i+m .uvi2 v1zll /6b2b.rctacharge?

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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 2.0q6z;gnd3q +bq m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same point chadqzqn+3bq;g 6rge?

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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 3.03 njlji3kh5 lx99lpy:e ky)f6on y94b 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 cp9 fi bl6j9l43 )x3ye:jn5 h kkyn9yloorners 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 centb: gs ac 9olenzhh:4t4v.)yp -er of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the av )t b-p:.hsyha gezn9 ol4c:4bsolute 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 charges that arev7pw (gpc66 wd::ks4* tqj vor

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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 isk5vbh4 7tnd/g kpx05w 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 except9 8x r 17cbkxmv0b7qif that one has twice the plate area of the other. If the smaller capacitor has capacii8xxfqr0m v17bc9 7 bktance 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 ozz/jt0n3xm w/f C. If the area of the plates is doubled and the distance between the pmzt0 /jz xw/3nlates 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 full/ /:y:cgreds xdi1 a9 kmp(o1vy and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plateavp / k:i(cx:m1gr /e9so1ddys 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, the cb q7a 10 ifo72qxiah8fapacitance of that capaciq 1 fqa7b8iohx720aiftor

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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 constant v4n- ko)jph)0li( gzk doltage by a battdnp0k k4zgo -)(lhi)jery as they are pulled apart. 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 cap e7 zfes.w*)fpacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the 7ep* f e.sf)wzelectric 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 tjpaneh9 fy9v mm4.w, 3he plates of a capacitor. 99ewnha4 mj3,. vmypf
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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 betweenadp8nm*-1l (t (hjw 0g7)df grnreby 7 the plates of a capacitor. What r e-jmnghdd8(t77r 1) *blngap(f0 ywhappens 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 materian v/7j anvp ;qw*u4k7 m;tafi*l such as paper is placed between the plates of a capacitor holding a fixed charge7v*wqfm;4 v;t nink aa*u7/pj. 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 75f0lvzw3 ljf charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. The energy stored in this capw5f 0jv 37lzlfacitor 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 c( y 0:wdhelf-dapacitor holding a constant charge causes the energy st-ddf(h0y w:leored 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 a(g6waiy zyko6 e-,c s9cross a given capacitor causes the energy stored in that cw(9o,iyga6 kysc 6e-z 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 t l j lar(.q18c*zebes1d): qyqo move 10 C of charge from point A to point B. What is the potential difference between1)(q y*:8jqd 1zl.s rqbel ace 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 inr0fel4ngw 5 f9uzy :6+vkld,c moving an electron from point A, where the potential is -50 Vczvr5:9+kg 6 fyul,en0 wdf l4, to point 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 th*y, 8veqr,xdwp9: cgltj; sh /aciq6 bd00kr 8rough an electric potential difference of 500 V. What is the kinetic energy of th cyrbgd8e*s0v, a6, 0d;qtxck qhrl/wp9 :i8je 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 accelery)/ ylg+bp.3wqi5/t-r bnc mc ated through an electric potential difference of 500 - t.lnqc)/5 /wmybprygbc3 i+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 through hy:wk ,5:mmb1bkedw: a potential difference of 1200 V. What speed does it acm:1bk b,ewk5dh: m :wyquire?

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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 akej f0 mnb5: 4 0fi/2uf1yiyrmoving $8.5 \times 10^{18} \; electrons$?

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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 potentiau9z09ehj4f ,uhod 3 mr*.edwml difference of 500 V. What is the velocity of the uew,hez0 o m.4r9 d *hjdm93fuelectron 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 i8nq9+4hbth;jg h/gd mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnin h ;g/digh+984qhbt jtude 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 poteb7 l1njvhs0guxmc) 11 k( kax,ntial difference between two parallel metal plates separated by 1.0 mm. What i( axjl g, cbx1k)u7n1s0mk1hvs 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 magnitzl4sbfb(f bqz5 u a+30efvx*;+j+nj eude of 500 V/m, is directed parallel to the +x axis. Iln0 fxej vfez3abqs*j+ +5(; 4+bfubzf 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 electric field of 50 N/C directed towar1,nrjn0 (skr vjdn. n 3f4b+7 ug2iqczd the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a n0n.c,z(1j7nj3skb q4uvnr rg2ifd +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 directipdal4sg.0lt +uj6u *lon of an electric field of magnitude 3.0 V/m. What is the change in kinetic energy g.4a6 ls+u tu j*lpld0of 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 1shqq gs0vn ,5(zz:(re 2-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 gzseqq hsr0n5( z,(v: 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 128huk xkvy96xe n 1rw)2-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 kinetichnuwx2e9x8k ) kvyr61 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 a 12-c0z+ubft-pcvf h8vdi ::r xsu+l67 c-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the elec-7pcu :vu:0c h6 slbfrf8t+v+dxz-ictron 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 directed toward t 8y(s ;ylrhpo)he east. If the voltage measured relative to grour) sp8y;oy(l hnd 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 the2y rwlarnfw+c18y, 5t east. If the voltage measured relative to ground at a given point in the field is 80+ tywrrlf,n8 ay51cw 2 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 differe3 0g9z w0hvjbance of 12 V, it will acquire a kinetic energy (in the abseh gva0wj0b93 znce 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 di9-z4 *uphccz7ey w1m hstance 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 stick. Find the yqo79/)9ki9jh a - u mb hoip9m9pss)nelectrical potential for the center of the meter stic ois kaq p/9i)mm9sbu -99 n7p9hyjh)ok.

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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 t ef/ 6-ygpa 5xm:xxd5che potential is taken to be zero at infinity, what is the electric potential at poiad 5x/ ye-g:xx 6cfmp5nt (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 pol*x recz1*s t1;l*d xstential is taken to be zero at infinity, what is the electric potentdx zrlxsse1 *l*1c*;t ial 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 p.0.dfkqz ) u* doulv h92ubcs;otential is taken to be zero at infinity ;qc 0sdhbu).fuv9 2zol*.kud, 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 u.ids19 /ego+j zf an.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, an +njos9ifezu.a. /dg1 d 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 +4.0 mC are placed in two diagoncj4 n61rg m*iccri1j 2ally opposite corners. In t1 icgr26 jncmrj*14 cihe other 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 (charkzbp+a; *8kx ige +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 necessarr.hq9c*/pe/1 rxrlf yy to place three charges, each of 2.0 mC, at the corners of an equilateral triangle of side 2.ech xr*9/rr.py1fl /q0 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 s( fj q2g( ceuj4/hk1aa 2.0-mF capacitor when it is charged to 10kgjq/h cf2us1 4(ja(e 0 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 capacitox2d d+k 1qvealfi*s5z./u,e pr 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 are6 x)xy -q5wmcy separated by 0.050 mm. I - xqyx56myc)wf 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 capacitoi 5h):(fp9cbsd/* zq l0hn ogfr 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 hasyxyd kcv/3l+pgt3njkr8 / j;* 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 tpg;/ytyjkdk/ c *3+nrxl3 8 jvhe 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 acp:6h a,kh.a iwross a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectr:p 6 ika,w.hahic constant = 4.5). How much 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 a 15 mF capacitor. How much energy nxm51ll 2a e1a5gxj8gis stored in the cap2glex agnma5xl18 j15acitor?

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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 acrossu vi9dx 9(cmhzsbm 05hz1 w;w2 a 15 mF capacitor. What is the energy stored in the capacitorwbz9s1vdhcw9;i2 mx (mz5u0 h ?

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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 vj*(ks1qcifv1v u3gf3 3v4e ythe plates of a capacitor when it is connected to avf 1 c vgvs*ei ky43(33jfv1uq 12.0-V battery. How 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 it3mrd uba1* ecze8k2k/ 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 dkwf7 3 *:isoy0bx jlz05t4xvplates 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 capa jycmekeg+r3+, *3dgf citor 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 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 hjxk7f6i khg*(y3zhr .*lo2gor 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 constructed1:fv3wo(r 1 8zzn;px/nlw;rbe(puuk 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 cfk34a9qhw q r ).kiy-yonstructed 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 eg2mn t rp0d7r.n1 nr150-V battery and 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 capacitance of the capacitor afte1 1dr.2n0m rngn7e prtr 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 batvuuz2aa.g 9e/cplq( 3tery and becomes fully charged. The battery is removed and a slag2.a9u3a(qv le ucpz/ b 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 voltage across the capacitor's plates after the slab is inserted?

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