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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 following is not a vectk-hlh+- l.8lcx nltl: or?

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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 .; e m(-zs(pwsfr6e)vd s o5klis 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. Object l4.mx aw c1w;pb :r)r95bqqce A has a net charge of excess electrons. Object B is grounded. 9q.pbw )mb ae c:rrlc4 qw5;x1Which 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 dx an/2)s,flvb. wg 7nxirection 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 opposit:4 f pvlvd6s*ie 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 conducting sphere.v4l azgs5uafwp dqt 2o e2 24t,-o*)sz ;ebz,z 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 s*-okjb w,4hlzm+ 1 bcdp hx:2upeed v by a 500 V potential difference. If the potentiakd2 1-hmbl:u + wbc4*zj,ohxpl 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 potentialt5e*-hf65w 9io wbkro 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 4sm tq4x, x(evj9ng *:swl(icpoint B along an equipotential surfacesegt9(m4 cjlx4nq ,xsv*iw ( :.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface 0,hjwaw1a i a4db2piyv p1 8( p*p.isumust 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 c)6q+p0asks exx0l*ih j1t;39zygbvd arrying a charge equal to that on the electron as a result of moving through a potential bh;dsp13xa+j9 tevk s0iz)g y06l* qxdifference 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 unit q9((n) zd (7oxvlbdxn 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 corres,1w op)ocr8ta ponds 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 32v04thu c4:yzpd.q1spk.p f j8advh point charge is 100 V. What is the absolute potential 4csj24tupp .y3 vkhh1d v8:4fqadz.p0.0 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 atagv a +o3dhef7p,)l h8 a distance of 2.0 m from a negative point charge is -100 V. What is the absolute)ed3g+7fhp 8l ahoa ,v 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 exan9o yn6i5h*ee ct 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 center when each of the other ehny65 9*ineocorners 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 .e:er8 p/lo+l3h0qrv7 kdto0 cxux)c a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when a)l.x7c8elcd0p0xh+k r/rte vu3 :oqo 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 alway cw,ypj7tm5o+zo e4t7 tt oo +.mwx.j0s 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 voltz iv; ,di2)ongt*4jqp 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 in every respect ex g80 g )xdwqr8zc9rnf/cept that one has twice the plate area of the other. If the smaller capacitor has capacitance C, th)8g8gdnz qrwx /90cfre 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 smo*vjh9xv-;r 8vu. h of the plates is doubl rs9v;8uoxvvh .-jm*hed 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 capacitor fully and then is removed. The p(75clmvcs ( rg n87xsf uin+o*lates scsu(v n(xrn77o5 cl8mgi + f*are immediately pulled apart. (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 capaci5rhi)6 - zzjged ha4)ctor is weakened, the capacitance 5ch6e-) j hzazr)i4 gdof that 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 witdekf xg0o2kn-5ra j3- h constant voltage by a battery as they are pulled apart. During this process, the amountk-0f5-gxajkre od 23 n 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 wiry7 m0qlwamb6,f0p4*jgzszf. n 7rl* th constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during this proce77lmm l6rjzfwfgs,q* a.z0 4p* b0nyr ss?

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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 addiio-l 2tzgx.8qgpdt 6/ e/2 casng a dielectric material between the plates of a capaci/ tt 2pe/axgd.il-o 6g2cszq8tor.
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric materiale63r nyik s;30gzev5d yn wcz8k32lr) such as paper is placed between the plates of a capacitor. What happens to the capacitanc0ld s;2 kzinkg3er) er633vywyc 8n5ze?

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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 of1h3-5l2jbsmk b fg0cjcj w6 7q a capacitor holbc6k3sjl2- j 17bqm0jf hc g5wding a fixed charge. 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 become5u d sxdl4);jjk/etqfww; +.ps fully charged. The capacitor is then disconnected, and the separation betwedut lx+j pfkeww)qs; j/5; .4den 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 caum 1gr3czc*h6b m0 it(wses the energy stored in that capacitor to 3wz0rmm*cg bt1i(6c h

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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 theluq(-a,z 94auvyd;or:kj) wu energy stored in that capacitor t), d-9kuoyw( u4q;u zrla jav:o

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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 )2uut (u1ablm to move 10 C of charge from point A to point B. What islu u(ta)m1b u2 the 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 from pointw ywv a.vms6izp vp/fx4f*641 A, where the potential is -50 V, tvwpfa46/fv.zs mi 1 p*64xwv yo 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 0vipb6mg8as.,: v cb q6omv4yat rest, is accelerated through an electric potential difference of 500 V. What is th,:gm0v6oqi8bvs cv.ya 4pmb 6e 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 re1z +kfseqo9v-m, i5 j9svg ug3st, is accelerated through an electric potential difference of ji5vsgm19+qo zgs9 fe-3,u vk500 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 through a potential difference of 120(,7nv qf:gvzkjo j /si54v 2fo0 V. What speed does it acqvvgf :/z vqi,o 4(57jsno jk2fuire?

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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 Vkf7,o hqeu /hf7h:z-)9yyanu do in 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 accel vh9s* dfs.; 1wwmmq:oerated through a potential difference of 500 V. What is the vev1sq.sh:dmmf 9;o*w wlocity 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 carries a charge of 20 mC. The object is accelerated from restde 4hp0e vfc w::gr6u mm/o;7k through a potential difference, and afterward the ball is moving at 2.0 m/s. Whh:reo0v uwd:k 7f cm /mp6ge4;at 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 potential differencmrdn4;4 u q8n9/luqhz e between two parallel metal plates separated by 1.0 mm. What is the electric fielm9 l84d q/uqh4r;unznd 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 aif2a-m.m bh cj8a2ud: magnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m mjif :m-a.2hdc2b8 uais 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 th/nkjow3mh9ifig g1ix g,:7 x (f*)xd he east. If the voltage measured rexi 1g *)9jnog7dm/higfwix h3x k(f,:lative 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 i3*u fo, v+vx ws9d)kqm along the direction of an electric field of magnitude 3.0 V/m. What is the ch+vfkux*w osv3 dq)i,9ange 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,g+ l6 9iwb.upd separated 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 1.wgi6 .p+ du9lb50 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 0.20 m, are connectb s 26b;ms8xtnwnx6(n+x.1x(aiq ac jed to a 12-V battery. An electron released from rest at a+18xnnn62c a qbs.;w6bxx(ajs(i x mt 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, separated by 0.20 m, a *8s 6dazx*bf++-viyg3jpi tl re 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, iv*x+fbs6pa tg-3 y*dj+i zl8what 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 towardjxv8 80a7 l:tkpbejryev/1i- the east. If the voltage measured relative to ground /p - vlvy r7a08e8jjetb1:xik 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 field of 50 N/C directed toward the east. c :znpzz;y(16 xsp+bexd 1ds;c o8ch / If the voltage measured rex+ns18x opzpdb1y zcc;z; /hs(dc:6 elative 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 t d2 r;82ky,fz qg8ibiehrough a potential difference of 12 V, it will acquire a kinetic energy (in the absence of frictioq;d22 yb8e i 8,izfgkrn) 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 hsn 5bd 08+n8ngwgc/gkyd6i0of $5.0 \times 10^{-10} \; m$ 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 elec7ext-* qi7upr d, gmf,trical potential for the center of the tqxri 7u,d,* ep 7gf-mmeter 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, jc 304s1va2c ldes0mp 0). If the potential is taken to be zero at infinity, what is the electric potential at po0sjcsp2v3 a4e1c l0d mint (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 atc ;4s+lhy8xip k 4rc9x (0, 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 electric potential energy yh4rc+;xc 4 k9plxs8i 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 nq ,;39idogu). oktjq 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 infinity to point (0, 4.0 j93 ntg ,)qouoqi;dk.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 corngr9cvq2zj+1reap x:, (i,izv ers 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 cmi rig,p zer1(ca9:zxv2j ,q+v , 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 diagve4b 5 wqxv2ay0,3xb conally opposite corners. In the other two corner40y ab c vxvwb,5q2e3xs 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 (chargekame/e 4wtf q;)gi9*qc4e4cv +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 2.0 ;*z 2h qtah;xhl,l *zemC, at the corners of an equilateral triangle oha;e xqh2l*z h*zt;l ,f 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 the plates of a 2.0-mF capacitor when it is charged to yz -o-x86xve8l s o.cy1008-xs.- 6yvcyxeoo lz 8 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 capacrlu 9b ml.r c3midbo;n;4,cj3itor 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 sepag1/pi-q;q e /2*p9jz6 y nbz:+u ie5cmbjctgkrated by 0.050 mm. If the capacibm/;/-96ptqkjzn+ jq5 pzi eg :cgc*2 i1uybetance is 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 of as47 9wzyq4m/w3jf g7w ytp b*brea $0.20 \; m^{2}$ 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 tnnk98lo1dh)o +x b8tphe potential difference between the plates is 2000 V, with the top plate at thtdn)o k ob9hxp18n l8+e 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 1dh7vky4bib6 rr ln *9(00-V battery. After the battery fully charges the bri7k *hvl94r d( y6nbcapacitor, the capacitor is immersed in transformer oil (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 mF capacitor. 0 k4y zr 1h,*ilj 2pz,xfvt+g)vq top*How much energy is stored in tf h2,0rzgvtv xq +,*p1l oz*jty4)k iphe 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 capacr(+*r yzrl ua+itor?rl+y (r rzu+a*

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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 9 mb./eiwpd/m onto the plates of a capacitor when it is connected to a 12.0-V battery. /diemwp.9m/ b How 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 chargloh5/.i:j ki .ul),g oryp zw9ed 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 consiin2dy *d-5ov+h a l-ffsts 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 a*qixkro wk4,2rea $1.5 \times 10^{-4} \; m^{2}$ 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 ofr57.o +x ttufr;*btlp 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 capaci8g aik6mb f: uu:9( 1w0.qdtt;ttfdnptor is constructed 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 consty0q wxb6; 9zikructed 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-uz nnle-r2 v, battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the platez en-r lnu-,v2s 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 becomesn1+5rof. iqbd 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 vi +ofn d1qb.r5oltage across the capacitor's plates after the slab is inserted?

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