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习题练习：Physics Unit17: Electric Potential
本习题练习来源于51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)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://51fly.win/test75.html
 作者: physics  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 followin4ul na z0,7m0ozysvha ma:38 xg 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 is a(bax2e xmx 7 h,ha/+llgj;9mj

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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 su aabdq u,)) 3+ l4neymaexpc21rroundings. Object A has a net chap+u43emd)qcb1lxn)aea, 2 a y rge 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 direction of the electric5-bav fw2urjgj* dg .9l5lfr( 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 direlt y ks37sya)wc k::t;ction 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 placed on a hollow cohn4 zp4 5zmks2f6oa; anducting 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 acce jao1sm y-t1panxa+ ik-0 c0r7lerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to rkn0 1oatjci--0xy sam+a 71p2000 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 potential2 pof;v n*o*zl 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 equipo cgwdx7p5bf9 0tential surfacgw0f7pc 5x9dbe.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surf vly2)rce8sh pra0(xqw g)(l-ace 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 carryingta 588)ohtc-uz fdm 1d a charge equal to that on the electron as a result of moving through a potential d5 tt)mo dadzc h18u8f-ifference 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 unii ba*5 tos5i m0a*rzv9t 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 corresponds t 6-)lxe /3blqnh5 f8dgigt0 ifo

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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 distasx2g1b 3 i:lcunce of 2.0 m from a positive point charge is 100 V. What is the ailg u:1 sx2cb3bsolute 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 disz wczkslz16+w2b b- s +/wcrk6tance of 2.0 m from a negative point charge is -100 V. What is the absolbs 1/zrz ++wk 2sl6wk-wzcb6cute 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 center of a squ-/vlbq+o2 sj8jbi(ax;s+ wc i are 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 a charge of c(i+s-s;jbloj qai bw+2xv 8/+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 why.+5j8:rdzwng .n yd aen a charge of +Q is located at one of the square's corners. What is the absolute pw:jgnna r8 dz..yy+d5otential 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 that are9oumi64; )exss kg0uu

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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 iyw+8vet2cv5*sph tvz/ri s6)s 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 everywn 7e, -kqnek;()eqw o respect except that one has twice the plate area of the other. If the smaller capacitor qe );kw7-,wnqe o kn(ehas 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. f gwfusoq +x 9dy:6:gq.ok,4a If the area of the plates is doubled and the distanc.awyk9 x4o q:g 6ff,:q+dguso e 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 capacitop(hcc /p3/ixa0f htm9r fully and then is removed. The plates are immediately pulled apart. (apm9h x/3pifh0( cc/t 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 capac;haq he5e i-fd8mb 9k6itor is weakened, the capacitance of that cap qk 6ib-dee; 9m5f8hahacitor

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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 cza. ra .z+42d ksfjmvka(: sv;apacitor are maintained with constant voltage by a battery as they are pulled az+ zm s:kd.fr vaaj24.va;ks(part. 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 maiewq;qv:s l3+k ntained with constant voltage by a battery as they are pulled apart. What hap qsq:3kv+e;lwpens 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 c oihvfopgt jv 7;8w*h fs1b:-z62+jpf ap7 tg-2f+f psfjh: vj18 v;*owpohbz 6iacitor.
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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 pzea9csw )26fdm. ++vmya 4 nxzlaced between the plates of a capacitor. Wzfa6 ecd.)s2xnmvaz y++4w9 mhat 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 p;y5iv pkr 4 **a4r8v sszrg/cdlaced between the plates of a capacitor holding a fixed charge. What happens to the ele;cy / 8spig4asdvr *vz* r4kr5ctric 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 ;4b e:y5uy)-nygh 9 ,r4 ejfjbazbvy- a battery and becomes fully charged. The capacitor is then disconnected, and the separation bet b-9;be- h)yjrefu4z:jny 4b 5y,vagy ween 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 of a capacitor holding a constant charge causes the enq,ui0rdjr p-7za2*ic)cx ia ,ergy s a027jii-, )cixqrd r,* azcuptored 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 causes the energy stored in thq3p9u--qkht od vo0s 9at cap9 dv hksqp0t-u 9oq-3oacitor 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 energn+ 3uavde3q3hvl 8-fn5.lc vxy to move 10 C of charge from point A to point B. What is tv-v h n+qf53v8a33 lxcudl e.nhe 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,5+vabdbyibcat(2 l; n/g7 (dajfani 7,gez . from point A, where the potential is -50 y (nbeln d7azcjad/(;g5,g.afa t+,vibb7i 2V, to 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 vktmdi a)o(yy 83 :x ;2;yhiyvrest, is accelerated through an electric potential difference of 500 V. What is the kikxo;h v;a83mdt:yyiv) y(y2inetic 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 rest9n 9hi+lcq :on ag+lx7, is accelerated through an electric potential difference cg hn xno9+ li+:7l9aqof 500 V. What 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 proton falls g. h) ri*5kwjny) j+luthrough a potential difference of 1200 V. What speed does iti5+h) wjnkl*j.yr gu) 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 movma4ewfsg 4p 60ing $8.5 \times 10^{18} \; electrons$?

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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 potentiy79-6bq65gc vv/ re c /laysbdal difference of 500 V. What is the velocity of the electron afterwar yb-s6 a7yv/9glbrvc6ec/d 5qd?

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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 rl,0w:nzxc b 8xest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude xz,:c0xl w n8bof 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 potenj;wg4y lq55br tial difference between two parallelrwj;q5 54lbgy metal 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 magnitu h y)2em.c /lm:r(v2cc qfir;kde of 500 V/m, is directed parallel to thm2yi.cf2ckrmc ve;( l/ : q)hre +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 elecbnd(t:drcc1r:3 p3tbwq q 71gtric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a givecn 37w:dr g3(rbdt p1qcb:1tqn 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 aloo3z u. 42uj1lxr2-rt p o(-vawmfas:a ng the direction of an electric field of magnitude 3.0 V/m. What is the c.:trlaov2- 14uz - jx2u (amsrao3f pwhange 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 bat 6c0., sfc swwjs-/ jot4,owogosu0 /a) pq8vftery. An electron cpss, t0uo-a.qo c68wov j/0/wf g )swo4,fjsreleased 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, separated by 0r7 1lf*ooxdsbk4 jo gca/)r5; hxo .i;.20 m, are connected to a 12-V battery. An electron releas ocb 1j*;h4 )lx7a k.og5o/;fx idrosred 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 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, separatf)k r:r9e g)jked by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the n:gjf))e9 krk regative 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+wm xmoy5t8 pd(u4b7u field of 50 N/C directed toward the east. If the voltage measured relative to grod yuxm5mu(t p8+b4o7wund at 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 fielzh zg*l.*9 kwud of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field iszk.9**lu gh zw 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 hpvsicua8. bp+v*z v 08:tz(f V, it will acquire a kinetic energy (in the absence oftchz8* v( +:vpv 0f8 bsiuz.pa 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 distance of-b:slc jxov2 - $5.0 \times 10^{-10} \; m$ 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 potex9o.( vba4yl w8xf* oxntial for the center of t8ov o f .9l*xa4wxbx(yhe 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 potefiw5n,.n p; kol6ur+jntial is taken to be zero at infinity, what is the electric potential o+l nn;uk.r5, pw6ifjat 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 (3.0 m, 0 s3vubcd6qs :8). If the potential is taken to be zero at infinity, what is the electric potenti b u6ss:3qvc8dal 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 cha4ismx nns yv,u1//ooh+sx a2 5rge 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/ +1xso4s,vy5mhnu no ais2x/ 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 o: bh6xvo:7 gxof a rectangle of sides a and b. What is the potential at the center of the rectangle if 7::bgh6ox vxo 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. Charges of +4.0 mC are placed in two diagonall)n/p+q0awzo ph .65 pd9kqi djxri;/ sy opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in the squ p 0hkaw)ixn/ ;rdzp.j95+q6/do qpsi are'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 (ch*z:lr tjox3, mn(7qa4t hz5saarge +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 place three charges, each of 2.00g3mwn bgj8ma jom9h/nis 3z3 ;)4rbq mC, at the cornegm wgb8so3j m 9mabn4;h/)nri 30z3qj rs of an equilateral 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 o3k(ir.a-hg xl;xk ej/9a sz,the plates of a 2.0-mF capacitor when it is charged to 100 V? x kg-/ k.araxoe;l3jih(9z s,

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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 f8l wc*cxkw9- 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 fil10(t g6dakeosr y327xjpvp v1f:) gaeled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the platv7s )g30vrf :oe1 a2dj(ppk e xy1t6age 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 ofy-qldj651j/vh) fu7 vlfxr-j. .k hwe 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 plate separation of 5.0 cm. If the potentia1xl90jd tck3 tl difference betjl t13dkcx 9t0ween 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 acro.(hw (zflu)v 2fqs f5ass 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 charge flows from the batterzlqf() s 5vfwa(.2fhuy, 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 .jf :tfelx 9yl+q ifvma+9(g. a 15 mF capacitor. How much energy is stored in th+ lv9+x9 (fa lt.:jefqgi.fyme 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 stored in the z)scy *y,o.l2cggubu m64 3gwcapacitmz3c cu)byg4u6lg* g2 .sow ,yor?

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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 capacit; uppyv q(:9h z1r(mgyygj,5oor when it is connected to a 12.0-V battery. How much work was done in charging this ca;gy:ryp(9p zvh(qj m,5y u1g opacitor?

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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 t v60 g/w2fnnn ;b4.beiu(-4aummk j1uup8nswhat 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 capacitorsv0wodzb x13le4mk 2 - 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 capacitor consists ss /+ b2s)uxmy lh ;*9nwv7fsyof 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 co6 ,vcf)n5 vdixc)-m qi3l3ffonsists 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 -go(+c-i qm dspt1mhlq , pa0j4*y 1trof $0.40 \; m^{2}$ 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 constructelksbv3 q +)i2g;wao/pbkc(5n d 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 connected to a 50-V battery and becomes fully chufg p5b h-.x fex//qc)arged. The batteryegxx/u.f-fqc5 p)/hb 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 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 becomes fully c vca2n/.: utvbf70dg2 nl m+hbharged. 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 2+ ant/l:f. uvbv chn7 gmdb02constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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