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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 vecto:+ /*u,bfd mctyn n4cbk6zuf 7r?

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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 iszk 6. z3)mvas2pu ;w md8fjhr5 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 in+,6 mbnvwqsb+sulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher po,bqw s+vmnb6+tential?

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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 electric-awzqyvd a 3 6ni1(wl/ 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 di 0b8;,ft hj;fs7ipgpfrection 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 place b p;yv7o9ti ybyc-xrr)21o9gd on a hollow conducting 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 accelera*um ))voe2d r-n ye a*ehvp9;tted from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new speed of v) trnd mhev2p ueoay*)e*;9- 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 referred t qfan)js6cmme*s 9u+x)f- r3w 36wkwho 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 equijhd)t( goa3/hpotential surfaco/) htj (3hgade.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface 0h6 3jrx-p3acbvmuj.0qgzlu4e2db 5 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 charge equal wi b3, :*ldllyto that on the electron as a r ld3li,:*bwly esult 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 *zh,i;eb7e24 z cx,2bp: a.qihv pyft 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 co s1.co:a+ekz erresponds 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 2.0fjxl j3im51kxm (ij 3: m from a positive point charge is 100 V.x3 im (j l1jxfi3mk5j: 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 distance of 2.0 m from a negative poi3j*;4q mwyuvx nt charge is -100 V. What is the absoqy 4u;jwxm3v*lute 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 ch ;24ot* p76 z3yu;gv4a labyqvlm4- fsgwt z1enter 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 ot- ;mwz ;o3y2atzl*vatvgsyf4u7pbl 46h g14 qher 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 squhfz*h ,gr:szf qr:f e8ad6) x36w1ddzare is 3.0 V when a charge of +Q is located at one of the square's corners. What is the: d:,f6 dh1r*axgf )hdswzz3 8zf eq6r 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 concog1(0 nkc*9v8 7dfjve )j nuhsist 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 y35 mas6gnjyz -*wt1myzt /a)kf8b r+is 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 capac88.ov8sh4fblei ax8q itors are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capaciti.8 e ab4l8so88xqfhvance 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 capacih* md,u(te1v5e 3(n zw bbs8cttance of C. If the area of the plates is doubled and the distanmue* nbtwe,sz 1(db83v(5 htcce between the plates 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 fully and then is removed. aud /v57z a2 gs8vwpmi5s.tg: ea9x2 3hh:hlx The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plattx e2g:a 5 h.sswlhiu 9d z8/7:a vpavhgx52m3es 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 uynyo*odzxkclc 3j9vg6* +,*given capacitor is weakened, the capacitance of that 9uvcogo 6jyx kyn3,**z+ ldc* 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 capacitor are maintained wit3bu.dz km9w l5h constant voltage by a battery as3 5k.d9ulwm bz 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 capacitor are maintained with cohmm;7 aq t 617d,+cj1xz ycngbnstant voltage by a battery as they are pulled apa;n+gqzmx,1h1dcc67 ba 7ym jtrt. 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 a cg31b1s /k/emvro(b nw apacitb/ow1nbevm(r3s1g k /or.
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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 tt:z/qjiq u2 oij .b)8xhe plates of a capacitor.q)t:u8ijxjb 2.z iqo / What 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 be*xtv5eipyoj4 : 8aw5ztween the plates of a capacitor holding a fixed charge. What h p*8yvjtao i5 xwz4e:5appens 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 tgy1symyn7iz +t*ee-63v .ee so a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such6y3msi.n*gysvy e+e1t-e e7z 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 capacitan)b1pzl9;i58 0k u x)swcrg7rbdvzi x,ce of a capacitor holding a constant charge causes the energy stored in thxiiw) bblv kr)zrp79us5 08xz ;,c1dgat 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 causes the energy stored in tn r2t ezq,w49.v*,gosc,,que5jq m sthat capacitor tceoe . ,q v,4uss ,59*wtnqj rt,qm2gzo

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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 moyi*ai)6h53lhd+khrmy/jg:1zm b0 e vve 10 C of charge from point A to point B. What is the potential diffe)+631gmiz:5ayejhv/hm0 dyhk r l ib *rence 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 electronus +,upr8 vy;c from point A, where the potential is -50 V, tps y+8;vuc, uro 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 e.b qr85 +xsplkhv3k/ 6 -tlaqh*7a ixthrough an electric potential difference of 500 V. What is the kin*+velk7btsx6rxl 38-/a i hqp.qk5 haetic 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 ac..px/zbwq el) celerated through an electric potential difference of 500 V. What is the speed of .)p.e/ lzbwqxthe 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 -yb6f9dw m3qc a potential difference of 1200 V. What spee-q36cbyw 9dmfd does 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 movv8 x pvx)j15/,y-ayiem g .yhzing $8.5 \times 10^{18} \; electrons$?

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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,j gmy ia6u0b3pirh3 9 accelerated through a potential difference of 500 V. What is r93 a3pu0 himy 6,bijgthe velocity 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 5bwmh v(j-e)nvq 4yd .of 20 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 magnitude of the potentid )y-v5jwnbh4(.m qveal 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 two parall2e q 8,ls7g jx,t+7s4zv htcoiel metal plates separated by 1.0 mm. What is the electric field betwee, 2hg 8iostl svx 7t4qe+,cz7jn 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 magniaku 6 h jvq)oz/n.*)f q.vnrh4tude of 500 V/m, is directed parallel to the +x axis. If the potential at qv6v )qf.r) z/kohj*.na4nhux = 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 the east. Isnajv459yru 4c3 hzwl:n :i8x+umj h:f the voltage measured relative to ground at a given point is 80 V, whaty:n:js5hh 4 i9av u:zw43lcuxn8mj+r 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 mir3*5/lfhqmp e t2y) of an electric field of magnitude 3.0 V/m. What is th/emqh r)lpf5y 3*m t2ie change in kinetic 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 battery. rv ayson ;g,1ekt /7i)d .u8cylt1gnmoo5( a0 An electron released from rest at a location 0.10 m from theds1annt5yguo c r (; 1oka l,.ytgev8imo/70) negative plate. When the electron arrives at a 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, ar 3 8 wlf:;nk9pwbgj z01d+mvcae connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the: 1kl+zm8 g93a nf0dww;jpcbv 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 +p3pvuzqn ,5v by ;qh9connected 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 0q5vv 3uzhb ;y qpp+9n,.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 Nzo dy ao(a/v.ccf x**;/C directed 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 a point 1.0 m directly east of the y/c; .(o aca*voxzf d*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 toway jv+cf ,o*mwmtcad0ry5w,27x z8m s+ rd the east. If the voltage measured relative to ground at a given point in the y+wm50 d8*yz2+mt,rs,fvx acw j7ocm 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 potential difference of 12 V, it will acquir7 )nq+v4 rokm1uv2mv), rcu lqbiy7s2e a kinetii m)b )ukvv7, sq uvrmr+ 2y21qln47coc energy (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 distanc5a )anqaq 0ym b sp17h9xga9ggwv;.8y e 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 z+ae7 l*tf4wk are at the ends of a meter stick. Find the electrical potential for the center of w k +*7zltf4eathe 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, qzs/(b qzgq,;;et+ w n0). If the potential is taken to be zero at infinity, what is the electric poz;g(e+;wtnzb/ sq, q qtential 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) ajsyqb-h; 25*+ n7av 4 n8ityiuu 2xfgind a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to benv2x-5+yu i ;nb7q g* fj sha8i2iyt4u zero at 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-nCy 9 wnvi;q(rt 1p.8mv2dj7pkn charge is at (3.0 m, 0). If the potential is tak.1pyk rp;87id2v9 wv mt nnj(qen 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 ch19pumcgj fi::arge +q are placed at the corners of a rectangle of sides g19p cj :uf:mia 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 slkfdu0kls ,3b;g 6 d;gide. Charges of +4.0 mC are placed 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 i ,3f6g0llskbu;gd k;dn 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, xu2+otweq 9e,70u z1z ftvaf3mass $6.64 \times 10^{-27} \; kg$) 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 necess 33k*w xfd(rxiv:,r(cpmrmw4 m m.f6gary to place three charges, each of 2.0 mC, at the corners of an equilateral triangle of side i4f,( mprdxmk: w3mr * crvx3.6wg(m f2.0 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 is charged yflu2:c ,t4x*s:,cggcyzt(4k7n iauto 100 V?:t*z,n 4s uk7g( g2fyyl4t:icxcc,ua

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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 of area,x 8ub f1vd43 s;pmfyp $0.50 \; m^{2}$ 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 ai 8crzqb h.t 7k*yc2z9,8 smszor, and the plates are separated by 0.7z2szr8 ,oktqz. 9* csyhb8mc050 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 capacitor;(( +5otjgowvkeft7nq o9pg4 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 hassk7 4uv(,i2 rac 0hllo a plate separation of 5.0 cm. If the potential diffe c,0 asirul7hovk4(l2rence between 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 battery i0y,sj ba-jl :fully charges the capacitor, the capacitor is immersed in transformer oil (di a:ib js0y,j-lelectric 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. Hhx9 c(sz0i-*z-cvq qy ow much energy is stored in tzxqiczv-qh9 y*0- s c(he 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. What is the energy stod9lx8ehz8v3 q / yt6bcred in the capaciv6t9cd8/ 8eb lhzqx 3ytor?

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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 z 8sjbv8cv8ae zt- m,7it is connected to a 12tv -8 8vzm,az 7b8jesc.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 it stmq iu5 (p(z9b mg9;o.nud )rzbores $2.0 \times 10^{-3} \; J$ 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 of asq oh:*kksh:zu-vji3j1;) gu8 m s1i ezdw,u;rea $1.5 \times 10^{-4} \; m^{2}$ 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*2e rj- sasl -33f:ive(pqfwd8 sgqb0 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 capaci1su q,/sm6qf6u eyvm)tor 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 constructed with plate area ofgz7 cp0gd8mo*w*. j+5ecjm gf $0.40 \; m^{2}$ 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 pla 29dyp7o bmv,-g19l sseesys* te 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 fully charged. Thrvj qqviwugnc:4;3+ /vvt78c t6f /gm e 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 cc w /6uvq;mgcr/v gt: itjv4837vq n+fapacitance 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 becomvb8p2+4 jvxi5sgb8ise q/fc (es fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the die8b/4jpb2ef+ s icqvi8 xs(5vglectric 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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