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习题练习:Physics Unit17: Electric Potential



 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 followinbmjy .)rensv7 5g )mj;g is 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 9+t9z9kbudn .d8qp n b:(kyblis 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 f/.(c 6kjcydvarom their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a highev6dajcy. c/( kr 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 direction of the electric fieldsup n393 -4ns/ha vbet

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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 opposi4p9q gksyt40h6v;qnrte 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 co1metz ;,ht*ynnducting 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 ptjbm0 +1 7vplz4yn,guotential difference. If the potential difference is changed to 200u4gnmy b+l p7ztj0v1, 0 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 po+e ve:2u*f1t)fpoy9 ,ra f,1 ojooeqrints 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 mmrh 7h5+kkal 2oved from point A to point B along an equipotential surfach2+lhkrm k5 a7e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfaa/a7c c*y ,npfce 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 to thate6na.nq;f na2z nzxofk 7s704 fq.zx. on the electron2.ofx47nq.f6 ;nazeq. zx7an zskfn0 as a 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 ixip f4.8dw v0a 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 cor(dw z2g cg0h4sbn/hj* )xc;fsresponds 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 hsen64:y4mun h l6i1pc u+5socharge is 100 V. What is the absolute potential 4.0 m away from the same poino1 p4lmih+u ny n:e sch5su646t 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 o410 7lehr wu 5wc/fm+kttz. cnwq9v/ff 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same point 9uclvw 1ec 5t/hqn fmfz.7k /+4rt0wwcharge?

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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 zo,k):pixix c2t, a; pis 3.0 V when a charge of +Q is located at one of the squareix:2ti, ,)ko xzp;p ac'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 at the center of a square is 3.0 V when a9zqymxl*ypqlqp* 7b8f su31nq1/us . charge of +Q is located at one of the square's corners. What is the absolute potential at the s*quyxf91 bln/p1q mq7p8sz l. uq 3s*yquare'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 consr;cy25d iwfp y3 d;pr)nfce3 ;ist 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 is6umda( 23mi4v ruq )ob 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 idep-d qd/ o/f/uu/vn.j0h zp (njntical in every respect except that one has twice the plate arej p /-nd q/jphfdu0(/uv zo./na 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 areb.p+ivz9fi rioa1 3gy)t9lt 2a of the plates is doubled and the dista9p3l.tz21iog)it v+ 9ir fbaynce 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 rem:elec(/b1g t*eols jo7 us-*aoved. The plates are immediately pulled apart. (With the battssoe*1act*l-e/eb(lgj 7 :o uery 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 weakenedbj:idx+ /ol1x , the capacitance of that oibxdl+: j/x1capacitor

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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 paralw/8q)2 o+d obac 7cja7stvm 5ilel-plate capacitor are maintained with constant voltage by a battery as they +)abom2 /ccj q a7dt7si8vwo5 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-platel*8u 1d wax3ac capacitor are maintained with constant voltage by a battery as they are pulled apart. What happex3aawl1 dc*u8ns 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 tuyy)u 3l t8hbim h.i+qr;k.m/ he plates of a capac/iibhhyqlmm t).38r+ u k;.uyitor.
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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 asrbed/hs8 n.f +-ldg3mi 9jjg0 paper is placed between the plates of a capacitor. What happlm db/rf.d0i s8j -ng+j9hg e3ens 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 bepzf(p mfp0 jpl; -)q2ftween the plates of a capacitor holding a fixed charge.f- f ;(pmj0f pzpqp)l2 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 fullya2o7r 7jl .eeu charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no chargeel aur 7o.27je 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 constant charge causes z u,m9 vzd9zd+xh:h gmctt --;the energy stored in tha+d dx -9v:hzm9u -tzchztg;,m t 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 capaci ygl +otw,+wam39hyw 2tor causes the energy stored in that capaw3 9t+ w,glay2 +myhowcitor 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 enernfolw fzu9dee5) / rn+hl42k)gy to move 10 C of charge from point A to point B. What is the p z9 )d ek5+lef2o4 nrf/hulnw)otential 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 *.4dbg9l xu wo/b ug8mu6kd04v 9xac6r ktbd -an electron from point A, where the potential is -50 V, to po 9/wmgx846- dd4xbv0b tladcu*kkbg. 6u9ruoint 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 through an electrp9oe :7glzsm wd)- 2o4dq pp8lic potential difference of 500 V. What is the kinetic energy of thepqlel7wp)oog 2m8dds4 p: z9- 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 p bv+v*ah )wa0+rru( am6ufl -eotential difference of 500 V. What is the speed of the protvb+wfml0a a)+r*h6 (euur a-von?

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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 V. s ,tovsu5ko 3oe,vz iwi ,)2-cWhat speed does ouiv eoc)vzk3oti ,s2-s, ,w5it 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 movingpnigs kkn-+q+j m b;: sp( ,-nbr;md6l $8.5 \times 10^{18} \; electrons$?

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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 the/3b+ np r,q+k*fioq cn/eea*rough a potential difference of 500 V. What is the velocity of the electron eip*/ e*3qq rn a+e,n+kfb/ocafterward?

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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 mC. The object is accelerated from rest thv+ol;9 8hwg n lf5kmb2rough a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potential differb wgkm+2 5;voh8nfl9l ence?

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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 potei 7 rsmjeked64*wd27 yntial difference between two parallel met4d67wjrd 2es7*i kymeal plates separated 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 direoqc5ni 2lao+9ju,d .hcted parallel to the +x axis. If the potential at x = 5.0 59ouh.,ido qacj +2nl 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 directed5xupp3 t 1b.rr toward the east. If the voltr1b. rxp ut5p3age measured relative to ground at a given point 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 electo a/794m zzw h2k4eqpwric field of magnitude 3.0 V/m. What is thzo9e7m2hzp4a k4ww/ qe 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 a9xc;ef le p4(e -sqxu; 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arriv;e u9e-4p(fls excq;xes 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, separat2)4 eabjgts /sed 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 4 j s)a/e2gbstmuch 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 connected to a 12-h8 9ar) )s0aslrb)pm tV battery. An electron released fr)at0s8hm ) al9b s)prrom 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 thug wgn1iny 93yr ;dw91e east. If the voltage measured relative to ground at a given yugngi 1w3d1y;w9 n9r 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 tfa+p i+-ttf3 i pq1xd4oward the east. If the voltage measured relat+pa4-+ftft3ix p1qd iive to 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 wri3 0t)ia0v(tu grfa* ill acquire a kinetic energy (in thea 0tg*ii3 u0ftv)(arr 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 dis3p6lu 9l2ktqd1 (g,wt p(g wlg6nmp i3tance 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 thnkjpwd-bifys96,ur+* l9d y -e electrical potentialrbdn+s6d99f pi-,lwu y-ky*j 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-nC charge is at (3.0 m, 0). If the potena pki.5v -/fj ,gdrf9ntial is taken to be zero at infinity, what is the electric potential at point (0, 4.0 i. gkn9 prvafj,-5 df/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 azb*it f94ar5py ( wau*t (3.0 m, 0). If the potential is taken to be zero *w p z(4*bf iu5ara9ytat 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 aw yjou co);(/ot (0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, whau j ;coywoo(/)t 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 rectangle 5mvb(ity 8 -42+po0lyxs yr slof sides a and b. What is the potential at the centeryy rlipvx08o4st( s+m5-b y2l 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. Chargxzux+ ytff k2tx,*. 1res of +4.0 mC are placed in two diagonally opposite corners. In the other two corner.+k1* yt2,x fuzfxtxr s 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 (charge +2e, map/hq0drjedv7v + ktpz v8 ,s6e do3d)1ss $6.64 \times 10^{-27} \; kg$) 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 of 2.0 mC, at ,8dw * v,x( qktnquaf:the corners of an equilateral triangleq xuvfk:n*d wq,,ta8( 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 onru8 ,9kr fl)rgv/u7the plates of a 2.0-mF capacitor when it is charged to 100 Vf8,g) ur/ vl9ukrr n7o?

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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 ab;zvpg47yrn.x:s t / 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 are separated by 0el d65g*9+8 l nshnq lfvtx,p/.050 mm. If the capacitance ilv ln5x9e, gd/ sp6l*h+f tqn8s 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 has plates y2l 5j ms)l, hmml/z, oh32iraof 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 p,5t on;yytih/ /rl/-gfyf,g* v/xc65 x mo ilrlate separation of 5.0 cm. If the potential difference between the plates is 2000 V, tn;5 /yify f/o yc x/ mr5lig6vl*x-ohr/tg,,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 thtoabk0kq2 8- ce battery fully charges the capacitor, the capacitor is immersed in transformer oila-bt ko2qkc8 0 (dielectric 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 yf w8v yfgyt+j7i9z)(mF capacitor. How much energy is stored in the capacitor(tf i )8y vwzgy7f+yj9?

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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 capaciufs67n,umskbhe +d) (tor. What is the energy stored in the capacitor?7bh,msf(es )6d n+uuk

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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 it is connesfd z- (h i6xmx;koxu*r7u4.xl. +zvzcted to a 12.0-V battery. How much work wasl*z- hfzv;oxuxudmx s(z7x ik4.+r . 6 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 stores -zdief 5v,hb 3$2.0 \times 10^{-3} \; J$ 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 consistsm84jf2jz0d lvp:itag udzx/ n,.0 uj: 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 capacitor consists of plates of axkh 9fyjl1f,(aw)(btnk;c0/ k kgm0srea $1.5 \times 10^{-4} \; m^{2}$ 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 plates of are jm*/:yhrb7jnj7:wpwa $1.5 \times 10^{-4} \; m^{2}$ 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 lok i.wg22lx8ea 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 constructeg c/51y iqym:yd 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 connectuqt6 (gy.jp dyi// 3ited to a 50-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 ca.u6jp(gt3/yi /t i dyqpacitance 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 ,9zmcr9+j2u,f /gghfptep b)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 voltage across the capacitor's plates after the slab is inserted? hgpp+j r/ut29ebgmcf,9f, z)

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