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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 vector?lc:z(yl3 ia 5.khc5il7ur3wdbr7m6 u

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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 afs( gt0g t0,ypzi tr63

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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 so+dc 49ssp)vinsulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object +vs)4o9sdsp c 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 dir.jg kkdnpg. 28afe vf1z*r0b (q*jxu( ection 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 fiel sl -c-7up0vpl:8 milhd

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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 :rn,o*tu:ffd1x u )rca 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 accelerated from rest to a speed v bjp /tjkf.)p/j 0f-t9 )7fni5zviosb 0c au7o ey a 500 V potential cis) tzajoue0p)i/n7of90 bf fjjt7./p v k5-difference. If 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 arez fob*3b-6ps- h: udsr 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 Az wcf2r0*0e 9fcqbnq0 to point B along an equipotential surfacer00z 2cw*n 0qfeb qfc9.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfacdxypp:wc 0mm7h- qn2w7-hd0 ce 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 hcd/ z5, oox9px( .sicbts2h 1charge equal to that on the electron as a result of m,ci( hx25oobssd1/tzc x.h9 p oving 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 isci.4. hzya styxw+ jmkqk5; 6km: od2 mj4f2p( a 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 corresponuz:fyc+ b0x8dmij9gun n / p7q3+2 mjeds 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 point pbtes :nak/r7c):;d hcharge is 100 V. What is the absolute potential 4.0 m away from the a h n/sbd rk7pt;::)cesame 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 ny3j p uqanr b)r7ja, h2ze m4j9(;1dslegative point charge is -100 V. What is the absolute potential 4.0 m away from the yhj e7nr r1jpq4 a 92b)d ajm;,3szul(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 9 llf(o ,+fcuhd0((y4uuuvbt exact center 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 other corners is also filled with d(bl u(cuo( lt 4,u0y+hf9vfua 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 su o er+s*)swy.quare is 3.0 V when a charge of +Q is loys. )e*rsw+u ocated 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.sssvz:t8c *q 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 iy kjco103u.h q,p gf8os 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 that onz c(0, ue1mcwbe hasmz1, ueb c0wc( twice the 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 p /ay+v 0tfm+9sknm.fof the plates is doubled and the distance between the platemnkv9y/mp+ta.ff+0s s 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 parallevut oci/;ez( ;l-plate capacitor fully and then is removed. The plates are immediately pulled apart. (ovic;et z u;(/With the battery disconnected, the amount of charge 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 weo 4s7 s23hhlnkge .9vfakened, the ck34 h2ehs7s9nv.lfog apacitance 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-plate capacitor are maintained wikoot5kic w.hd0m8v9+ th constant voltage by a battery as thhi .motkkw05ov d8c+ 9ey 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 /w fgz, svxk m;rk,5q0are maintained with constant voltage by a battery as they are pulled apk0q rfvzg,xmw /s5;,k art. 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 dielectgai8ci6 .u4 (uyzkdgttz)p. /ric material between the plates of a capacitor.yt.c/ ) zu( i8zag g.ukp4id6t
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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 usfij34 27k:y-:b+ q ix qadzyis placed between the plates of a capacitor. What happens to the capacitance?y2xszuiq-7y +ib:fk: 3qa jd4

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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 tm9pwbl y1j4t5 he plates of a capacitor holding a fixej wt1lp54 9mbyd 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 az4r 7t2- 9j bhp k; 0ea.yx4jjza/sqjynd becomes fully charged. The capacito 0x 4- tazy4a79szj2j/kyjhqpr.j b;er 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 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 capacitance4)d(i0 b 0xzavbjfax, of a capacitor holding a constant charge causes the energy stored in that capacitor) d4xb(i 0zfj, aav0xb 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 capacitol+oj xh: 17akwknzr++ r causes the energy stored in that cor:jax1+hk+7wl nz k+ 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 to move 10 C of charge frordscxc3p : 6;f7sao)s m pa8hggv1t78m point A to point B. What is the s dsm8g3pogx 77a)c;16tpf8vra h cs: 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,h; w -8p.zcsyd where the potential is -50 V, to point 8d;p. whcs-yzB, 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 : xh3,c21o vuyewdjp /through an electric potential difference of 500 V. What is th2dhjxwp3 v1 ecuy :o/,e 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 electric potex0wlt(j 85z2cnuw n 70pcw 2xmntial difference of 500 V. What is the speemu2nc5t 0wlwnx72cjz wpx(80d 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 difference of 1200 3k, tg1f j()ptkkz 3umV. What skjpz3(kt)gftmk,13 u peed 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 90zevtu .se9m8u jgm50.0 V do in moving $8.5 \times 10^{18} \; electrons$?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stationary electron nr8al af(254 /tyh91gho5mb 9lvcitg is accelerated through a potential difference of 500 V. Whatm4l1chg/ g ha2t(vl5 9f85bo 9aynirt is the 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 of d m/z7w*4ok cz20 mC. The object is accelerated from rest through a potential difference, and afterward the ball is mmz/c4kwz d 7o*oving 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 electre5 j3un52 tx , xjohgnhu1)-ig0aszg*ical potential difference between two parallel metal plates separated b t0g5h j-zghin3sg n)xjx15auuo2* ,ey 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/g, vbdm;1nos ,m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2sg, m1;,vbod n500 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. If theemt3xy +xa(*p voltage measured relative to ground at a given p3(x+ yam*e txpoint is 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 magni2rscidz /y 5*+j uljnnqn (e:+tude 3.0 V/m. What is the chaen/yi n scl5jdrj:2 nz++qu (*nge 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. ) dm29u)to8x:yst e+g, pqkiw An electron releas2 td +9qg8 )s)u:wtekmxyo,iped 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 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, 4p*iy6at: 8 i cat*qkvseparated 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 0.050 m from the positive plate, how much kinetic energy does tq6 a i*ck8ay4pv:it* 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 )uy01f2f kjc dy;bb z65u1g )ioiz2pzby 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 dis6iuj g1f2p )y zdy zo5c;kibubz201f)tance 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 east. If theozg xylf+: vlz c9)m98 voltage measured relative to ground at a given point in the field is 80 V, what is the voltage at a point 1.0 g 8c zo+l)lz:mv9 xfy9m 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 directed0nib d*n*boe 0 toward the east. If the voltage measured relative **0bnb0 inoedto 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 potential difference of 12 V, it will acquire 3*o1+h 7dpo4p qv4u fj/bsilq a kinetic energy (/upj4qo4 vf13isb qopdl +*7hin 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 distanc *2kil sipa6a2,eqe3q 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 are at the ends of a meter stick. Fiw(bsmjd5b. 1x nd the electrical potentwb1(5jxmb.d sial for 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-nxif9powv .9g+o2 ycoa,c 0ag ov7kx.) C charge is at (3.0 m, 0). If the potential is xop.+,yowai ck 9aov0)7cx.2 g9vogftaken to be zero at infinity, 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 -2.0-nC charge is at (3.0z:u8 h90 6en cwctthjp7f)4yx m, 0). If the potential is taken to btn0cy 84pjx9ezf:cw h7h6tu) e 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 .sbi3lj kz:5)j mh2bea -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infinity to p5k:i. l s)jzhbbej23moint (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 placedkw)/ jnso67mggaa 2cn*9fuuv;;3 qvf at the corners of a rectangle of sides a and b. What is the potential a)/n*nau;agvwsf 6m3;uvo9 2f 7c q jgkt 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 s l)5n *,plydzwide. 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 mCzn*5l)lpw y d,. 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, mah38gvmdh e g,/ss $6.64 \times 10^{-27} \; kg$) 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 ng d:xf zd(1o;1 v8trblecessary to place three charges, each of 2.0 mC, at the corners of an equilateral trianvtor(1zd 8 bfl 1d:gx;gle 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 c6 b,qors056 kx ja6plit is charged to 100 s6 lcx6 6aj,kq obrp50V?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacip .bp;va w+dz+ 9tvqx/mz 9wa8tor 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(d7j .zn9u yko air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what(jdkn u 9.yo7z 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 capacitoro40ihrk;-1 d mm 6f uq xlrvade(l72)w 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 has7 3 8zqu-)+hv-5cw)lzlt7pvjlh faxo)jj a j4 a plate separation of 5.0 cm. If the potential difference between the platj avl7t)olj35uz-w c) j8a4 +l-qj )zhfh 7pvxes 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 baqcn32b keza rkk1 4,wv 04m+sottery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How mac1s k4 +v3k4 2nm erw,0zokbquch 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 15l3ue-dr j3l 0ec( *cjd mF capacitor. How much energy is stored in the cal(eec- r33 0 djlucjd*pacitor?

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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 m yofh.t7m ph*mmud6 e7283vofF capacitor. What is the energy stored in the capacitoff 76m8o.hp3*umy hdm 2eto7vr?

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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 f t7b:zc)ca.jx lows onto the plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in cx) abzc:7tc j.harging 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 strt kfl(p 63n4eores $2.0 \times 10^{-3} \; J$ 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 al/(o kvql96bg 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 of ,g ie,slk*7c63aunne r 0aj(c 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 capacgm)c u e0zscd( 1j:aub 5zv(3witor 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 is2zyq g/n /x(yfb0/m qy constructed 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 8qdgkm itsx 16eabpe)4s(20 sarea 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 co2j -j(th zmb,q3y) nainnected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that c-) 3a qzhi2bmnjt(,yjompletely 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 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 battern* sim*2uoh,7/ch9 u)vszovay and becomes fully charged. The battery is rem2v uvamu/s9*ho7*ho) c,znsioved 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 voltage across the capacitor's plates after the slab is inserted?

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