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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于51fly国际课程 (https://51fly.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.51fly.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 75，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://autoconfig.51fly.win/test75.html  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。
 作者: physics  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 游客未登录  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 e ,6kh+m. m/qhk*pi1zstk (gpa 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 isx6(9wbotggq 0+71xk wr1ig o c 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 surroundxmgby7 0g8mdl*0qfo1( 9jitqmc ((iu ings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher potential? ji g(y *1c0q7o(9ul8ximm qbdg0(t fm

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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 directws2sasb) wa7)p kly3,ion 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 field/:lpjaxe-lt yph0m2 4

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Several electrons are p8n .tl( y;6u2z0ct1czqrfwp(w) fj8c/ orcqnlaced 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 accelerated from rest to a speed v lbsymo(,k09e+e, mc9z4kc c 4: ydaeeby a 500 V potential difference. If cl :eak9 0e(oces,cm 4ebz 4,d k9yym+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 referred to a bj-ml(z0hocp v7(u )ns

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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 mohbr6g /r.ol(vved from point A to point B along an equipotential surface.rho /vlb6(g.r

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfau u,7ivfv cjh)+,n2loce 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 : e+hhjh3)) fgksc)ro on the electron as a result of moving through a potential difference of one volt is referred toehg:js k))+3ch r)h fo 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 unit of+n3qeb lgid,;

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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 tu z5y/fe*tf.kns,sw1 x+ fth;o

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potentiame)b+c7d n p to69lrf1l at a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the same pmo9 7bc tfd)e lp1rn6+oint 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 frok 5guipie2jh lz qpf254j..6um a negative point charge is -100 V. Whae.ig2.pf i6 55 jj lh4puzk2qut is the absolute 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 square i,. g,n.urcj kks 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 conu,k,.k.gcr jrners 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 mjt0 *93nu ogd4j9nlzwhen a charge of +Q is located at one of the square's corners. What is the absolutez 4ud0n93n*t 9logj jm 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 th y -7 wwg;n1(a.odqbxmat 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 is cu 8ogw.c7kx, 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 capaci0j6a i ;.+aovoe po4nntors are identical in every respect except that one has twice the plate area of the other. If th.6ea i+vop04ona o;nj e 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 cap+lksun1scvdo9 r xa(mwc 0h3oc * 3(z;acitance of C. If the area of the plates is do1x scnrso+ c3o (0 ;ulkmzd(h*aw39 cvubled 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 parallel-plate cq3hn7gopk(e*/(jew y apacitor fully and then is removed. The plates are immediately pulled apn/3ohp7g(k*ee( wj qy art. (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 weakengub 8ukng;mqb2zy +(4ed, the capacitance of that capak q4g(yz u;b8+2mnub gcitor

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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 paralm5.ubdzk. j4+(s vci elel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During thisk .+4iub(5ves zdjm.c 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 para.k;n2dc4fpb df 0v(6ek gyn(ellel-plate capacitor are maintained with constant voltage by ad f bv(d fpe6.(ynk24 ngc;ek0 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 materiala tgjjm je(-hy 0*(-ik between the plates of a capacitor.-mjaki( g-ye jjth0( *
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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 the plates of /1jj.k gm1il ba capacitor. What happens to the capacitancel1/gjmj .k1bi ?

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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 the plates of a c: t5t rc**a9bf-khusoapacitor holding a fixed charge. What happens r-tc kfu ob:h*a9*ts5to 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 conneo nig3:b7 z6fected to a battery and becomes fully charged. The capa7g 3onf6zeb:i citor 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 capacitance of a capacitlq c; d;a7x+qtor holding a constant charge causes the energy stored in that capacitor ;l+ ;dqtac qx7to

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the voltage acrose7mx lyznz8l083 d tabq67i8a s a given capacitor causes the energy stored in that capacitor t8i8 z lt07mlaaqnd8yb3xz6 7eo

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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 1ucjbcc0 .r7p z/7 ja+l90nkaf 0 C of charge from point A to point B. What is the potential difference between points A and B?+nj7l7zbac /k 0rafcjc9pu0 .

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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, where the potential is -z1jihn h z6vs3 +jpp2a0wum /qv 5*,bh50 V, to point B, where the potential is +50 V, isaihb zhu350j mj*w2vpq16zn+ psv, h/

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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 electiqag,vxp*+ 3c; 8wft xric potential difference of 500 V. What is the kinetic enea*+i fgtvp83x; w cxq,rgy 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 e)fzu mzo:ya;sfa ;hn-146i pqlectric potential difference of 500 V. What is the speed of the prot-;a4 z6:n)ypfim o f ;ahzq1uson?

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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 1m+ z1pxzmj p1iaw86x.200 V. What spaip 8j+zw 16.1x xzpmmeed 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 ik3*gn fx8)xu 7q6jskvok- tcys /t/a,n 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 is accelerated through a potentia-u k(i0vhl(va l difference of 500 V. What is the veloci u0lav-(kh( vity 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 carrigop 3ntt9*; jghk/(u yes a charge of 20 mC. The object is accelerated from rest through a potential difference, an ;/okjgp(u y tgt93*hnd afterward the ball is moving 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 electrical pobgyu+5jmt:p , mf.ll- v;3w1n3 heoux tential difference between two parallel metal plates separated by 1.0 mm. What is the electeyhonu l5xv .lbg1pf 3:3-;uj+mm,t wric 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, withcj 0+qeie,hhm92r+co a magnitude of 500 V/m, is directed parallel to the +x axis. If je0h,e+i rocq9hc 2 +mthe 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 thens-0 kn q0zvb2 east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly we0knnv0 -2sbqz st 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 directvc o kapi1:f-8ion of an electric field of magnitude 3.0 V/m. What is the changev8-i:c ao1pfk 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. An8w:s2 * aq )itg*qlfbl electron released from rest at a location llg*2sqq* 8ita)fwb: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, s odrdru, rl:mf6 9-rjbho;l2 9yj/ z(separated by 0.20 m, are connected to a 12-V battery. An electron released from rest at a lo;z ro6rf l9rjhor (ds y:9jbul/,dm-2 cation 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, separated by 0.20 m, are connected to a 12-V bmui-fq+hh (8 g nuq5:zattery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distanc h8hq+qumu:i5nf( z-g e 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 theyaaei(4 pnw06 east. If the voltage measured relative to ground at a given point in the fieldaa p(40w6neyi 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 toward the east. If 2pzrjidehb81fxi(9m x y eq4+clbv ( vx.1a/: the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage ave.( bix (:e29 a h1iyxxcfb/1j ml+4 pzrd8qvt 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 potential6 udjr rpny7qlz. w((3 difference of 12 V, it will acquire a kinetic energy (in th.6y( rwpuzn7d lj 3q(re 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 pr0-/ di2;wq 8sb6 baovq7 ldmat a distance 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 tw7hx:p:w,xk-:r05b,l0v g ylnsihlp v: t 5s zhe ends of a meter stick. Find the electrical potential f xzl,7l s-tsry5lwbw 0ihh: ::vg5v p,0xnp: kor 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). Inag k:b+ kuxcelr o1e)jiz-7)h, 20iof the potential is take,kk-rez 7jg:ae+ l))0cibhxoi1 o un2n 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 cha tdk l:/m i7( rxk)bpuss0o7fuqtjs:59 +cj,hrge is at (3.0 m, 0). If the potential is taken to o9m7/5idh:jsf,+bls( ut x):k ptk0r7suc jq be 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 (0t5e qa3w14m qv, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the waw4qq 1vem 3t5ork 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 aretu mq8, 8yk4gg placed at the corners of a rectangle of sides a and b. What is the potenti4y u8ktgmq,g8al 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 side. Charges of +4.0 mC are placed in twsy . yfyp66zl dns/-j5o diagonally opposite co6j5-.s snyly / yzpd6frners. In the other two corners 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, m5;mx v0pns.nmass $6.64 \times 10^{-27} \; kg$) 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 chargeso /(rf71c 9 kigzblqt*, each of 2.0 mC, at the corners of an equilateral triangle of si19cf zb/ g(7tro qil*kde 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 it is charo2ac, f/ zgb 6om,ajt7i9d o*uged to 10m ,/fb j6aito*9o7z doa,2ugc0 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/vc7ltah(3xjb /il;u*1yd yf 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 fih9kjvvymxr* +h8 8+g wlled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pFvkm jyw*98+8xvg + hhr, 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,td5zstyf s +xk7e 7x/ 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 has a plate separation of 5dt9rj o4,5/z gttidt-.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the pojtr5ttz,-dg i 49/dt lates?

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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 9;(g tn qfmqt;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 battet(qng; t9 m;qfry, 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 l x ujf;, p8m)n,we1jeon a 15 mF capacitor. How much energy is stored in the mw f ;ue,pj,lenj1)x8capacitor?

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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 capac n4 bt;e81zwwhxn).hwd+f*9w (czlz dit41(f ze w9hwhxbnd*w l)+c; .ntzdz 8wor?

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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 ice 40bf :vsaeam8h:bk n :p00bs connected to a 12.0-V battery. How much work was dona:08 bac:mb:0 kb4 eh0f nvepse 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 * ipoavjn,+ n/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 capaceg2gn+ ; veu;yzsh0v-f5 e/ez itor 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 con lb9 1p;b d67vses cmri:+-hyrsists 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 consist,s hj 6afmz+g*s 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 ar7fr.9oeph0 ru ea 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 areas;f/opa30v h h lq;t)b 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 cha yr2ho1s+jq+ x hk oa1+q(ibr2rged. The batt2 +khr++h (o boir2qya1j1qxs ery 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 batteryz.2x ( zkp h;o-;ybkspvv/*str /w4qo 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 ovv;4kp/2qrwzy(tb x ks; o./z -so* phf 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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