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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://autodiscover.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://autodiscover.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 a vectorlvx9 chyk- /x1t:o;km?

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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 r xv lsu:0*rl2e/errho95 i; ha

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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 surrounr p ,v ,4m:nvm(/7pj-u1bawmhptl:czdings. Object A has a net charge of excess electro7pc4punp:b /jwa ,zv-,vt:(mm hrm1lns. 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 tsz1j :lf5p:gkxyjze ;9f i43xhe 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 1jq a3m +.bytefield

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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 sphereq(rtqw77f 7n.ir7 zyk. 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 acceleratedx8 rcehlkn t tg7vc) x1+0a(algx 076h from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 )(l0+axca kgxvh10t7 7erng6t8 hlx c 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 at3/3egp/8pg 17tmazv cd u+snj gg: i1g 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 move1eufhd32d0/ y;l)t m vrkny j/d from point A to point B along an equipotential surface.fyvljdtm//ryeduh0 1nk )2 3;

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface5w3vrz+wt *xx1o a6tjbf8x7a 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 the) rnpnyit1 gtc/l 71:p electron as a result of moving through a potential differepypcl/1 r tt)ng17 i:nnce 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 ddhndczt6xm2 3/5ra1e; f m8zunit 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 7+x7f,x nipzpto

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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)ihj7-cn j.( xnovwx 7g,1t xn point charge is 100 V. What is the absolute potential 4.0 m away from the same xnxh,.(vc no7iw7j) x n- jt1gpoint 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 point chawm -myyx5250m7n flznaz)c u9rge is -100 V. What is the absolute potential 4.0 m away from the same poia5lzyn c 27umn9fmzw)m 5-y x0nt charge?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potentialc7. a gj;ovbo2 at the 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 c.7 bavoo2;cjgenter 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 k0qg*aves+r: 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 squars0*qkg+vre :ae'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 alw cl*jv o9x-dz5ays consist 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 ikpf gf0b7 );hfs 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 capacitoh0d*3 bjt8 xy2h8 pgzirs are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capac hijzp2dh8xyb8 *0g3t itance 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 tvo vo27qv4j2)qw3k* 2 w1gou.sk ru hche area of the plates is doubled and the distance between the plat owvj)c.324sqkv2*og w 12 orkq 7vuhues 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 capacit0okacrn8,5 1cl me v,zyin7+ yor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens5i70nv r+ezymkl,cyno ,1c8a 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 weakened2,02me43 wqg wvfl gp hwt3n2m, the capacitance of that w 3mvmg2wqe,p2th3 0gfl2n4w 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 wik5g.* h;eu6kev 6 huirth constant voltage by a battery as they are pulled apart. During this procuuhv e. *6regi h;k56kess, 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 wihqr7(qpfkdv-)-k)wf1yv l tc7wlykng 46 9.rth constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during t(-frhd7)6 74pgwvqc kt 1 .yqwf 9n-lvkrl)ykhis 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 b uvye:jq1o ncb;/ +e2dielectric material between the plates of a capacitorn2+1;oj/y:b bc eevuq.
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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 plaw0i1h c8mc- cyp+cb*hced between the plates of a capacitor. What happens to tmb0ic1 +h* cycc8w- phhe 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 placlwylcf yt-q/l/j 0 -n0ed between the plates of a capacitor holding a fixed charge. What happens to the e-l y t0n0l -fqjly/cw/lectric 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 batterthy 80 ioic52pa2xe0w*ky d1yy and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is incrwaip y x0e80td1* cyiy 2ok52heased 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 h8m31 h sbb2 m:iz h.wha)3ecpmolding a constant charge causes the energymsm.)2h:c z wbh3 ipem8ha3b 1 stored 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 gi8y- i8)mriy kdven capacitor causes the energy stored in that capacitor toyy i8 8)rd-mki

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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 A to pointcfzt- e+ubs,63dlzoj-p d +tn5)2jcm B. What is the potential differfu-stj c+em poc, z6z3+)-nt jb5dl d2ence 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 pkw st ud 0fm1gre*-jj*ay o:26oint A, where the potential is -50 V, to point B, where the potential is +50fja:*u- 0 e k*wds yrj2mtg61o 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 electric poth9nvjuvc1 ;8(4yn py fential difference of 500 V. What is the kineticy4njfv 9;c1v(8pn yh u 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 accelerate;d3)f:vcqrh i pwd8;c7 +a wl8l5oksdd through an electric potential difference of 500 V. What is the speedipsc+o d)vwdl:c; 5a;k 8rfd 3h7q8lw 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 di6)/ oc;kxw.qbxf8l qg3ah5 lz fference of 1200 V. What speed does it acqui/zxlka.f c)lqq3g 5hx;wo 6b8re?

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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 movihi27cb, nnv (cphhb32 ng $8.5 \times 10^{18} \; electrons$?

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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 differencq;b*fln8j kipo txa;ry0(m j91ff+s) e of 500 V. What is the velocity of the electron afterward;ajf9sfk1f;l *8(qiyotm+ x n j0p)rb?

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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 fr4nb6fsp;dm 1r j6ry7dom rest through a potential difference, and a; 7f1rjr6nyp m s46bddfterward 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 t1;qb ;xrs*typona 74z*elv0 oao, rf (he electrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric fieq*v; rans 4ox; p0eo a1z ,rlo*7(ybftld 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 directed paralleluufb.szxspk jf ; bn8n)b :+( 4e.jt)v to the +x axis. If the po+zf j.nftnsu8uvxbse b ; b.)(4)jkp:tential 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 eam 3w43w hl(yxast. If the voltage mea 3ahy(4wlm xw3sured 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 electric field of magnit*y2d zyuy/ -wb2had5rude 3.0 V/m. What is the c5yayy- ur*dz/db22hw hange 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. rpm/5+5 t 0vnle.dl )w g4hfwxafd2k- An electron released from rest av.4lgx)d d-5mp ln5+2ea0 k frhwft/wt 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 f 0f5r k+tij*xby 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 enk+ f*f0ti 5jxrergy 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 6akb:h*gl/v o w, kxu5m, are connected to a 12-V battery. An electron released fb: hok6awg *lux/v,5krom 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 thein;c ecn+:,eoq897kxec8dy m east. If the voltage measured relat :on8e87id x c;+ecnem,cqk 9yive to ground 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 elect60svol gcp(0g*f/ n py2) oemiric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voopinl200yo /cve pgfm6g*) s( ltage 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 through8ltxeq9w2lq9/vlyx.boxo83 ep u8*n a potential difference of 12 V, it will acquire a kin*evyu9tl qb x92388 poqll/8xen.o xwetic energy (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 distance p i tcwbveys3 0c-20z,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 metej 3erin)*(t1t 1n hvwor stick. Find the electrical potential for the e3t n(wo*h tj1 i1v)rncenter 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 a7,fu5u j73 vkslu u0h9x6vwhq +8 mmvgi 0bel+ -2.0-nC charge is at (3.0 m, 0). If the potentialxbmu9lv05+vk7u 86jhwe0ui q+hms3 u7 f ,vl g is taken 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 (/h9 zrdm 2dfb;3.0 m, 0). If the potential is tak/ hf;dbr zd9m2en to 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 (0, 0) a re8j6exr,, .tgfbn)nnd a -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 chargb6nt,8 .rr f e,jnexg)e 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 fj1m49 70ngnwzk /kue sg)rt.4bdyt0 of a rectangle of side t 94e0dg .jwk4/fz7 ynnsgbr0 )ktmu1s a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, and b = 4.0 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 tk3 b/ecwz1t*a side. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are plaz ce3k1*/tw btced 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, mass 5fbn+4 1hgo is$6.64 \times 10^{-27} \; kg$) 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, s8.0a;:w:v kalrkqzt at the corners of an equilateral triangle of sidarzsaw 0.l:qkt8:vk; e 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 chargegif uft27 b;b3; f(:amnl c3red to 100 V;bgc72ub irn lmef:t f;3a(f3?

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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 plat 6jw:+s0s;rnhn3fin bes 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, a+wirmn9+lwiffay )u yn5*: 3n nd the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is*mff iyw5rna n+9:y)3nuiw l+ 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 osu mg3o/d -b2tf 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 0js7svh-2h0o , mslrrmg q.n4 plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, wit slhnv jm2-0rh.,g0qmo7r4 ssh 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 c w af2ww6vuufg967 dvq) .v:byonnected across 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 battery, which remained connected during the provuu bwv7:.6gy 9wdv2 )wqfa6 fcess?

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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 capaci d as 1j2j,h+ioboqx10-/lfpvtor. How much energy is stored in the capaqd/1s fo0hailbvj x 2 1,p+j-ocitor?

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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 stores z*j(oi25,:v-ald/pbii u in d in the capacitorvn-5,pb(aod/ i*z s :ii ij2lu?

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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 connected tz dmkbxv wm)/ :aht./(o a 12.0-V battery. How h/ t( adx)bm:vwz./km much work was 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 crs7e- ps;slc/3sg7q yharged so that 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 capacitor cohxevobf*0s kytv4p)pz5 sw8/)rh- e 7 nsists 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 c.y5e. fv qb0tqonsists 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(adk;*5ob9nt 7t ijr p99hp jls 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 cos89s8 w6t;q2t f4h fqcmh+lqxnstructed 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 capacitotvgfz y0serl1 *)* 2dzr is constructed 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 f30fyj1elb6l vw ,ltx-/w*nwc ully charged. The battery is removed and a ,ljw vb0*61lfw wtx3/-eln cyslab 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 cvkwzn+bo/+o (mmr ;. tharged. 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 soktwrz m/;( o+v+bnm.lab is inserted?

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