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习题练习：Physics Unit17: Electric Potential
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 75 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://tiku.one/test75.html
 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 vego8 2ege3:oua18oyy.:j qhbfctor?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulomb2bf1/f( +audf.rh khy 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 objects are insulated from their surroundings. Obj g5rasz6qi y(whs5-xl u 024zwect A has a net charge of excess electrons. Object B is grounded. Which object is at zxhisrqa-w5wu sg654 ( lz02ya 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 direction of the electrix p7unff-hz,q0 ;trv:c 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 eaqtfow;2n/n/yv0y0g w s .q3 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 conducting sphere. 17ccp-ohi-,xqd:l xt 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 re m wbg)d+)(cyt jt-w-7vx *yfwst to a speed v by a 500 V potential difference. If)+ ()-*gc tdf-ybtjvw 7xwwym 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 refqqwum.-rxdk 6:avc *r7cv 2v7v c0*lu erred 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 fromf7 ,dwf:e.t/sexr v:m point A to point B along an equipotential surfacevwexrd:t,f/.e: 7fs m .

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential sur:4v 0 ,nx*yl+vhpycp tface 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 that on tt8 ;oarg(+w c*vjqabz/ , ost7he electron as a result of moving through a potential difference ob a7gsc z j,to+*;/rvoq(twa8f 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 umw )+.s+oewe init 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 correspo ar 9/azfyqxizj.yu0 04gl-6ands 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 distannoup52y 2 1 ,(t.tnpxafl+ nbece of 2.0 m from a positive point charge is 100 V. What is the absoluteax(.f15 ypublp,tnn2 eotn +2 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 poinvoyt 97 oh,7w1.zo3rjjgla he8s 8,uzt charge is -100 V. What is the absolute potential 4.0 m away from t7y,g jelsh9z8ur783tv .o ,w h z1oajohe 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 es o y55.hwmb2lej v5vud84,tdl7vy(hxact 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 absolut58hotw4dyvmuve7,(bl2sy v d h 55j.le 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 ly1*6uk a o193d bb6r;hh1dv*opdvnk V when a charge of +Q is located at one of the square's corners. What is the absolute potential at t1kudn* 196d6 pkrovhy1*ad3;l voh b bhe 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 i:ji- g+ds 5 ps+00byxe; xxhuare

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One coulomb per voltt uq* q/bf2ej1 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 capacitors are identical.)vi 1h i9vhqd in every respect except that one has twice the plate area of the other. If the smaller capacit.qvv1 ihh)i d9or 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 the plates i mux9wqf + oq;dvw;m b0 ydo6s0jp9+(ys doubl6 udxmf+9qjpbv0 ws+ ydym0 ;;oq9o(wed and the distance 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 pkk :(w:)vp bnjarallel-plate capacitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remaikv( k:)nj: bpwns 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 caf0em/-k cyyk.cw0 qj-e(i doo,x2m9 l pacitor is weakened, the capacitance of that-9-l0wm/,f qjyk cym.kodo c (ieex20 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 wit3 q/7spn cpe3lhr-x x*h constant voltage by a b- l*3/xe3hc q7 prnspxattery 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 capacitor are maintained with condb -f n0xy)r9/hblo8g fmmu16stant voltage by-nmg/l9dyxrbo8h6f b u1f0m ) a battery as they are pulled apart. 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 vs2+wzj )i+l6qxcmo /;c c5ycthe plates of a capacitor+cvqzw+ o)cy/ji25xs6c c;ml .
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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 playelwgr3 +77ml up/qs, zk)p+u ced between the plates of a capacitor. What happensu 7,uw r+p) g+/mpelkz qy37ls 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 pape -rqt33h 3mpvbr is placed between the plates of a capacitor holding a fixed charge. What happen33tv mqh p3-brs 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 capauc jd,p/ 7tn,qcitor is connected to a battery and becomes fully charged. The capacitor is then disconnectj,/7tn dup ,cqed, 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 capacitance fmkhp d0c i+ja(ma5 (4of a capacitor holding a constant charge causes the energy stored in that capacid04ac(fa+ (jhpimmk 5 tor 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 pz*;o6bcotqp6 k xv:9 capacitor causes the energy stored in that capacq o9p ;o:b6tp6 *kvzxcitor 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 Aj8)f+ pcx s) ig:b+t,l3uox9mw1g mog to point B. What is the potential di+tsxm g3f+:go8cb l jgi))oxwm1pu , 9fference 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 mov r a;chzb4gp-8 w0/oqring an electron from point A, where the potential is -50 V, to point B,cw 8/ 40hpq oabg;zrr- 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 atbc3hdu9ti 3g : rest, is accelerated through an electric potential difference of 500 V. What is thetih :3db3cg u9 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 accelera7*6bu b.znsxdcfa / *ww vwn7g8wf,,vted through an electric potential difference of 500 V. What .wfn v787b,*w bu,/adnw*cwzx vf gs6 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 p:kk)rp. vio:yz c9n4sroton falls through a potential difference of 1200 V. What speed does it ayr) :4cvo: zski 9.pnkcquire?

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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 movingh fur*z5b;vc0,nmm.ko6 sb 4n,/ sqcj -td*jw $8.5 \times 10^{18} \; electrons$?

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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 difference of 500 V. ro 69zpnb1 - /ehg o*+txcs*qoWh/n6qsc ogtr*oxp-+ 1z9e*o bh at 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 carries4eg ccq3bzw/; vu) ao4 a charge of 20 mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 q;a/ c3 obwzvug)e c44m/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 mainta;do ,5 m+us6vrg q(nynins the electrical potential difference between two parallel metal plat, 6yr5d (om;gvq unsn+es 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 fiel8z7lswp i46*7ijt ,q is hhh7kd, with a magnitude of 500 V/m, is directed parallel to th 4 *i7spi jh6,siw7k8zlh7hq te +x axis. 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 the east. If the volb,,xnkrxhnva69 cx)zb.w oe e1a/+d* tage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 , d)+ee /kcrhxa a. obnb1,w69*xvnzxm 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 magnitude 3.0 wfz7f0dcc-g , hl 0 4p5xtqx,sV/m. What is the change in kinetic en hx,scf04 pdlg5czwf- ,70qxtergy 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 h/n, okfih46 )nc9ev x0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plae6kvnni4 x,h ch /fo)9te. 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 0.20pvv.;;f d v,z,7mc0cx 9poxml 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 pos ;7mx ; .cpvm0vdv 9xflc,op,zitive 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 )b)fqx hqc2 8h4x;yx48hmnwy0.20 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 2n yqh4)h8fb)mh4 ;xxq8xycw 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 electriqz vbq - ;b;vkt9.athvj;l *9uc field of 50 N/C directed toward the east. If the voltage measured relative to ground av9-;a tj*t qkv l;q9ub;.hvbzt 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 towardu g;.ur r6vp-z the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is thvr- z;r ugu6.pe 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 ofmeo zu5.tb,ecrg,xr h :07jh 7 12 V, it will acquire a kinetic energy,h5,ojr7t: zgr bxm0huce.7e (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 dishx.uhkji.v scz 833 wl6u4 p,stance 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 electrical pote;wku v ey6;aq3ntialw6kv; ;a yueq3 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, s6aldkn,bj3 :0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinitsjlb d6k3, an:y, 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 o m w wm4v:.8q+nqubn.mz/tf;a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric pot :wmwqt4m.; v bmn.unoq/8+f zential 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). Ia u*ktig8 xs8-2al z,hf the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infinity to point (0, 4aux ihtk8 zsg 2*-la,8.0 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 k vwsf* x-:qc9charge +q are placed at 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, and b = 4. :wv9x-*cfskq 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 t95a ca8 u( fagl5sbju1wo diagonally opposite corners. In the other two corners are placed charges of +3.0 s5lu1( aca fg5b 89uajmC 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, massr52 j7o dkc9ar $6.64 \times 10^{-27} \; kg$) 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 v4rt 9exmv5zmj 8 h/h/2.0 mC, at the corners of an equilateral triangle of side 2.0 cm95vhmr th/jmzx /e48 v?

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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 capacito) yuognwi*e/:86d r wor when it is charged to 100wn*)oid gyr w:/ 8eo6u 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 capacitor has plates of area uh6.-mflk k- 2pehgs5 $0.50 \; m^{2}$ 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 c/qr78pnb-j y by 0.050 mm. If the capacitance is 17.3 pF, what is the pla j7qbny/r8cp-te 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 of areapy 6 av+y*jzoz . nd;ek3f*hh3 $0.20 \; m^{2}$ 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 plate separation of 5.0 cm. If the pote2,erk-osl bzot+ : ac8ntial difference between the plates is 2000 V,2z e8ob,ro+k sa:c-l t 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 acros1ged2. a,qfla2)bto7k 9kp ds s a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional chard7glqokp,2es.9)atbak2 f d 1 ge 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 ene8(u oowqj9 p9xrgy is stored in the capacitoqo9( xp 8ojuw9r?

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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 1rlv8ada;oa 4 lh23ga/5 mF capacitor. What is the energy stored in the capaciar h vdol4lag ;a328/ator?

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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(3cs2ue/fs;eo(k vki *4iw9f nda( aw when it is connected to a 12.0-V battery. How much work was done in charging thisfo(dk9k(cve ai3fn(w2u *;i/ s eas 4w 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 + vgrp o5 pgao,bf1l/8wv(v/hstores $2.0 \times 10^{-3} \; J$ 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 k ebtmt1x+.h 1 agywah,z/3*harea $1.5 \times 10^{-4} \; m^{2}$ 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 consisyaftj gf- (pxm:n; oloz10-m 3atz3 u3ts 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 plates of arng:- 7 rfcof ewexo ;0zxyd8tom2u; ;+ea $1.5 \times 10^{-4} \; m^{2}$ 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 constructe;m(b ihjz*u qz)d(7taxnnkdb l*2 1;cd 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 ax +piw7kzmc e3pz)fbf lv793tyl6m0 1rea 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 fullv9dyth. 0c*mioe3f l1:-w(dz:dh yljy 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 5.0lhz y:0i - dtmdc9w.y*df( ho e1v3j:l, 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 con ;t5nowsa prd n: 6y3r.2bgoa5nected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space betweeydnoa5br2 spg;n.a 5 3w6ro:t n 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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