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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 vect .nx 3ida,.12jcwjh-y t5 uhfqor?

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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 ln;ou6h- b )dbis 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. Osxye.0og3c, +x -ufzqbject A has e. s,0x+u3xqc zog-fya net charge of excess 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 directih97rsjcm/dy0j1v+tqvxsr 0 llg + 0 i4on 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 electric fie x.d yb)rrl 1rmplv4)b:hl:f :ld

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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 cond. 0zcl xiebn(i.:s. xoucting 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 potent4m; akvnti+tc o2xcl6 e7dz;-ddk +8rial difference. If the potential difference is ck -t6 a ck2dx+oze;;4rv+dil dn87mcthanged 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 points6lp3bzhwdgah b *z)71src6 p6 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 equis ( 5 l cruph1)u*qc7f*i5glmdpotential surface.l7icpu) (rf5m51 dcl* shugq*

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfwu 4br-pb *2fdace 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 carryin2dxof87d c 0n3 3mbjueg a charge equal to that on the electron as f 0u od37mej8b n3dc2xa result of moving through 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 a ;ucll8pne2dgt,t:c+y mft 4 9unit 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 corx6fz6)6 a pbhuryl 3 :0rybv)oresponds 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 u zdxgy dmjmpge*+, o.7--- zypoint charge is 100 V. What is the absolute potential 4.0 m away from the samedxj e 7mmdopg,+ --y-g zy*.uz 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 fromaftqg78nc clu9h y5k 3wx5y+, a negative point charge is -100 V. What is the absoluty ,95x5yq cua3+f c kg8n7twlhe 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 cente0.yw c; xl)soyq:7h kbr of a square is 3.0 V when a charge of +Q is located at one of the squaxk .) csy:0 lyqb;7howre'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 atd)v 52v+cc7hchjo0x n the center of a square is 3.0 V when a charge of +Q is vc j)nchh2d vox 0+c75located at one 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 charges thj:17 ehxq, ,)ulur fjphx(6)dshsrb0 at 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 is0 .cv(pal-ghs 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 arefx z8z4ncis/+njrc+ 8 identical in every respect except that one has twice the plate area ofj/i rc+8f84s nz+nzxc 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 the4u1cng* fym 8tev6 ,xw plates is doubled and the distance between the x1*6n, yg8tewmcv4 fuplates 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 fuozs a/ u.hw wo)y2qk*4lly and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge ons*q.u)k h/zya4wo o 2w 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 tz ;,lk, rwc/vuhe plates of a given capacitor is weakened, the capar,l /wkuv ;cz,citance 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-pllm6s3 8vh1ik aate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on thl h6aks 38m1ive 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 para ,k r 27p,rjd;kvaa ec/)3nuzillel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electrie;zdkapra/n7vuj , ) 2ci3,rkc 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 plate *p ,q7cy6j82uj*bnxz u xof2co zk:;es of a capacitorz6y 8 uzf7x2c :j,qob*e*;puoj2 xn kc.
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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 betwee dt9*whczcqzv/v,- .xn the plates of a capacitor. What hz/hv9w, v x*cqt zd.c-appens 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 plnf;9tfxo1 jdp r.xlwyv 7-3j6ates of a capacitor fr-xxnol j3 9tw.7d6fjpv;y1holding a fixed 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 vf /ebwb73 *a-8fcavois connected to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plaf-ecb a8f *wa7bo3v/vtes 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 a capacitor holdi 0lwf,.gjrk4r ng a constant charge causes the energy sto jwf.r,glr 40kred 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 capacitor l dhmt6k32c0j6hc3ld.aqxo 8 /b g/dj causes the energy stored in that capacitor cl/3m6 6/2 kt.gddxbjd a8lqchh3oj0 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 is b60j3 v4hspzh8 odj2z the potentiaho0263 jh d vzzbp48jsl 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 frx b+-u8)fbcmsvzen 0 p:4:zyl om point A, where the potential is -50 V, to point B, whebz spyzln08v 4 :umx+b cf)e:-re 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 re(hbl -ympafq3( pc pzwq+), q.st, is accelerated through an electric potential difference ohq + pya3 q cwbp-z)ql(,m(pf.f 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 atr/rsgin 2+yg3 rest, is accelerated through an electric potential difference of 500 V. What is the i /2g3+ rgrynsspeed 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 mtu51,1v qbjy.a4q3lke eyl2 proton falls through a potential difference of 1200 V. What speed does it acq.eamqyyb 35lklj, 142 1uteqvuire?

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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 moviygu2.d d2hm0mng $8.5 \times 10^{18} \; electrons$?

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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 dsxrq 8 fo -b.th2s..ot/ar 4sjifference of 500 V. What is the velocity of the-f42tarq.o/bs8 s j.x str.ho 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 i2 plmi e(pxe1uq08z0 mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. Whaeplx102(qzu0m8i epit 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 difference between twos,ak z89dt0 mmhhl54t parallel metal plates smh9a,h0sz8t5 klmd t4 eparated 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: 7v q)8ezw+69siwgapr5ij l2z( dlcp V/m, is directed parallel to the +x axis.w)+gpq p: 65irzw87l ajic9ds(lz2e v 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 electric field of 50 N/C directed toward zchq*):+9, omh w5o90szrtz c9rg ovcthe east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a pq*0,w5r9mzch:+9 ot zrc)g9oov shc zoint 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 d fl a)*vnklj9)iv; o:jirection of an electric field of magnitude 3.0 V/m. What is the change in kinet9iaf:;vj)) l k*ojnvlic 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, separated by 0.20 m, are connected to a 12-V battza,,6uubm/zs8e gtv0hcum6 * ydvl+8 ery. 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 posc*,uzasm8u/ b g ,m+0euvh vzy6dtl68 itive 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 battery. An ephhw12z/q s o+ip5y )),:ejo3igbsbylectron 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 enjheip /y ow:b ss5+)hpiz yoq3g12 b,)ergy 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-V bac j*h 8a79iq3xyornu7l.) ezo ttery. An ele 9onc r.3oy* lhjaz7)qu8i7xectron 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, 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 u bvjw+:1x+mbj/qt.g 9 x c.cmeast. 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 mjm.+ mbv+ gxc 9tq.ub/cwxj:1 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 the eas)c6xl 4dt or8* ij fazku+m/z6t. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage r)6i jl +d zm*kt864xcoz/afu 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 potentfv95r n yxc0q1;q+thgial difference of 12 V, it will acquire a kinetic energy 9;qrcht qfng10v5xy+ (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 potentiavm7:m2/l5 v6 gr skxi 6u.i4jyzosll 2l 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 arr4+v a4d s,fkse at the ends of a meter stick. Find the electrical potential fk rs4v4+ d,asfor the center 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 wr0id4aue(.)og.r2dn tpqo 4 at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential at point (0, ) o owa rnqu2g.die4d.0(4rtp 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) and5y/ gum x22k0;ffknf x a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity,5k0fmf 2xkf2xgy; un / 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). If th l1 0fxr n,yb(pl6f.dme potential is takbx6flly(,10 nfmd. pren 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 equal charge +q are placed at the corners of a rectanxv/*an dmri lz/u(;mkp/7(ezf 6*tihgle of sides a a*xzpa;6/vr(hmu /zf * lk/(dim e7 ntind 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 :a9,je n(zgg c:*hl1m+nlnh6qrz mg;a side. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corne cmnaj:9nr 6(g 1zzgl+;*h:gqln,hm ers 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 (charg5e1-tcqgk i:ce +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 plqo or2r- r ufzi.wn97 s6ztj83z d:c;wace three charges, each of 2.0 mC, at the corners of an equila 3fzd8o cswj;r7.zrnui- z2qrt 69ow:teral 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 p;qmfeqe)v bothvam7( tuv+u gr9-:05 lates of a 2.0-mF capacitor when it is charged to 100 g5 tm0v-eho7u+()vm :uvqt a erf9b q;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 capac -u u,gexcp+kcotj86/itor 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 izgra f 1x+v47rs filled with air, and the plates are separated by 0 1 z+7rfxa4vgr.050 mm. If 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 capb c4vgh02e48lxki2l-;iau6 v6cw e xxacitor 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 cap 7a( bqtu+8gm*n ps1,rzfg5s cacitor has a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at tubp a*m+s(5sgg 1c7fq,n8rz 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 2he 6t y 92hcdlad50bvsz *w*cacross a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How muc60lec 2ash* y59dzcht*w v2 bdh 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 15ki366vjm ( eew mF capacitor. How much energy is stored in the c(e ikm 36v6ewjapacitor?

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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 capacitoq +8 om8vx3ol /5b:gwq7ndu cwr. What is the energy stored in the capacito7mnw3l8:vq qwdbg /5xoc o8 +ur?

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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 i9uz -frwmzq 1(t is connected to a 12.0-z1r(wm9uzf -q 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 th dt;e8xicjk0*i t1: woat 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 capac8n .h mvge6bmd+ ihre.9k n4tcy2+- ecitor 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 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 capacidse9y;hep/ 7mt jo -gnr,tg/3tor 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 capacitor consists of plasjtuqzd r:5qf7 9vf(adv((t 5 tes 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 constructed with plate ar;u6/wu0rv jo+w3u of5w/0:nm fhlqf a ea 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 plftag7zsgy-r i7v x *22ate 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 fu7(y3vl n k 1*bxyledv5lly charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dieleceyd*bx(ky 1 v7lv l5n3tric 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 becomess.x 3.4jqw7, 4y;ry 3f fdcfr:tn uhoh fully charged. The battery is removed and a slab of dielectric that completely fills the space between froswh:;x4 u3t .yjd.nq3y c 7fh ,rf4the 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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