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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://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://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 vectog7 z5a*ctu k+vr?

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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 i2n ehp 2a+x7inj ei1b7uf,k8i s 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 thei v6z t:3c h-f1byzvyh/r surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher potentb3 zhvy 6:- 1ytzfhc/vial?

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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 dtia7m,m),u5ds(5b 4xh m hlpyirection 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 e :,1y k;ivyo9t ylts:+k l3hjklectric 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 d oq*,nyz7zacme*z 2,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 acce3ca0*dajxy7k9mo sk9 lerated from rest to a speed v by a 500 V potential difference. If the potential diff9a*j970 ms ckky ax3doerence 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 whaavkal) 6m)a /l5l8 at 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 moved from point A to point B along an equipoten p6f5hfauv:0itial surface.0pi haf5:6 vuf

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surjgyl.y fr* 52opa2hh;btw) 5i:jgt2 zface 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 by8v *d6 bpdm sh-i4k-wbbgx6bn6 ;yo,d a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred to di6sky-m bd 4gw x;no*bp,-bdhbv 668as

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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 uj26vk1i joo2 kxzdf9+ nit 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 corcezgc)hnp0rm/ xb4g j0+ cn4 .responds 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 jkd8/,8 vjx 3ji bv6t pee5/axhg69bqfrom a positive point charge is 100 V. What is the absolute potential 4.0 m away from thh3eb/ jdt 6,j 8bj5xva8x/ke q6pvg9ie 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 negativeb rd;*v;fm e4o point charge is -100 V. What;of v;d4rb*e m 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 exaqv oh(ib;j d/ odc;li,0.nkl- 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 centelbcd qh .(,nvlk/0;o iodi-;j r 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 V when a chargenqdbbt4(ipmdf/, v/6 of +Q is located at one of the square's corners. What is the abv/d4qt 6,(fpd b/nmbi solute 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 alwaysk x8bf/ ;lh:mg hw.nowo*gtde04 s; cj o/gq*4 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 y( p)woprvj:. 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 ident vql- k s:*c61ynjk8lqical in every respect except that one has twice the plate area of the other. If the smaller capacitor has16 ljc-vlq8*q:skn ky 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 oc- i9m;kzcd+,0 jeuik f the plates is doubled and the distance between the plates is halved, what is the new capacitance? cc,;0kz-ki+9jm deiu

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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 capaci8wm/y)qw7 9i +qply hn84fqkstor 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 yy qh /sq9wi7)lfmp+ w4q 8kn8happens 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 weakgsj+ kh 2ci :p1jlclk36*gac /ened, the capacitance of that caps/*l3+:6gapkkjjgcic1 lch2 acitor

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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 cjd7sx59l eiloa 33unl 0tq;a* apacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, l3aqlou;eli*a j7 ndxs0935tthe 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 maintain5 kubane*o+i k-rx2n9ed with constant voltage by a battery as th2n5 r ki*xebu+nk9 a-oey 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 n -5j7) 2b9x aig) db4ycqrytv,bzw+ lmaterial between the plates of a capacb,dl)a7tc 9gx yq-b)y2v5 nzjrib4 +witor.
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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 d:6p oago.s ,eas paper is placed between the plates of a capacitor. What happens to ths. ad,p6 :oogee 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 placed kzb45h2gv(dn s 76cnj between the plates of a capacitor ho2sdjvbcnkg7 hn(56 z4lding 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 capacitors:ou na 2l)yukll) 46 atd0ra8 is connected to a battery and becomes fully charged. The capacitor is then di8oala) 264 :u0r )lt naulskydsconnected, 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 capacitor holding a colzji/3yg r--hmrvkz;1,m8 qunstant charge causes the energy stored in tj-u3-;hz8, y/ gq1zkrmirvlmhat 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 enervu(6fd p*owsfo0qqw- 6gf17 l gy stored in that cf-gd*01 fwf6w7 p l vq6o(soquapacitor 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 energylg.a c;rl0c5+8bl szl to move 10 C of charge from point A to point B. What is the potential difference between points A ;llg bll .+s0a8czcr5and 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 elrn0k2 v,a;qcmh h2/jzectron from point A, where the potential is -50 2c 0 jka2/; qrmznhvh,V, 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 rest, is accelerated through an elej1rf3g sv1+qyctric potential difference of 500 V. What is the k1jgf+q y1r s3vinetic 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 accelerated through an electric x+2*.1 reig2u9. ht:indnee/ha hmxb potential difference of 500 V. What is the speed of the proto/ a+9biu . hrde.h2eig*n1etx2n:hmxn?

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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 1200 V. a.6mjaakqx 86 What speed does it acquirem ka6aqx68.j a?

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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 moy d a-afd6ylh(y79:5y nk . 5)pgaqeseving $8.5 \times 10^{18} \; electrons$?

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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 zdce qa3je1)o/+c eg*of 500 V. What is the velocity of the electrod+gej*eq)3 1aecz/o cn 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 rest txn;:zbe j( y2mhrough a potential differ2 nb;(y: zmxejence, and 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 maintaink 4lv eu1-c7s(hu jcd8s the electrical potential difference between two parallel metal plates separated by 1.0 mm. What is the elech 1e vlk8ju7 4d(-uscctric 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 magni j5i a)8:s*e5t1b1 txo6g by2phcefbrtude of 500 V/m, is directed parallel to the +x axis. If the pot6: ge5s *p12bc85x j1h )yerfoabtbitential 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 dmgol2(cl 5sduz8()bk;o , m tthe east. If the voltage mek8l g,z d)mtl2bm (csduo(5 o;asured 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 magnitude 3h qanf +40 hw.t12za by )p6lb5yd8rweh.-iwh.0 V/m. What is the cha8l wrfb.btwpi.z0d2 qwy)h1 ehh- a+nah6y45nge 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 connecc0q3a.6fowgnv cob6* ,)ebl nted to a 12-V battery. An electron released from rvlqocgn 6af6obw)c* b.n,e03 est 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 0hevs iz9;;wyvur- 9a l96.ezk.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 0.0. 9 -6hl;zukesz9r;wv va9i ey50 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 co43qx o(n8k j vhi4r(ponnected 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 posi8jpiv(h4qor(o 3n 4kx tive 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 the east. ndu:y2( pru6uyua1;cvofc88 If the voltage measured relative to ground at a given point in the field is 80 V, what 8rynuuy;u 6c:a28f(uod cvp1is 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 fieh z;kgy1 8qf4kld of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the fiely4g8 zkh1f;k qd 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 through a potential difference of 12 V, yw d62l9ijaf(it will acquire a kinetic energy (in the f 6a id9yw(j2labsence 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*lw+3:cw/op(b iqgcr6kfa z *,i 6yjy at 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 ;5 ozob yob so+e*asl8;-pf-j the ends of a meter stick. Find the electrical potential for the centl fz5j* ; abo-ebo;ysp+o8-oser 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 (c1se6p3 hb d*h3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential at eh6cdp3b1 * shpoint (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-9yb jhz7zcab) f.v0p, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0, .jvay - 70cf9zpbz)hb4.0 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 atow 8n,,v0yvw9 n 3o8b7 qsdfmp (3.0 m, 0). If the potential is taken to be zero at infinity, what is the w98b 3 y ,s0o ovpnnw8,7dfvmwqork 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 are placed at the corners of i)lmln2oc k t 81(jc4da rectangle of sides a and b. What is the potenti1to) dkll8 4cmj(in2cal 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 r-r 9trzhao 5:side. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are pl5ar9o:trr z -haced 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 hme urklq92ikp-n(, hd6na0), 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 mC9gxika .y9/q v)r*g gd, at the corners of an equilateral triangle of side 2.0 cdk9gv ggxy.) ir/9a *qm?

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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 cuwwm )e0 j(6xsh,,oea9cqa 3 to 100 cw(u ewoach e)s,xa693q, mj0V?

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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 hayo; m l*eo5b7gsw 2d5ts 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 v3c6bhy3i4ptj3+8ft hpmd8v separated by 0.050 mm. If the84 p 3hydp8bi3vh6ft+mv3ctj capacitance 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 areabrb+t* 6jw kl/ $0.20 \; m^{2}$ 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 seu.4bcfvh9. f/vn( 1z m qvkk,eparation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the hi,.v9u1k fqchvb.e/4vzf( n kmgher 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 connec :;zl arq04dy oh2+i)mgya j4mted 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 remainh aila4o 2y;qg +dmjr0y4z:m )ed 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 a8ji2 ,g+qurrwdtcfp.l-fg(f7;e ) rr 15 mF capacitor. How much energy is stored in ,c+frt p;frj(27gr-wl)udrqeif. g8 the 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 capacitora kcor/ bk9t/3 so pg1k199b5xde.hxm . What is the energy stored in the capac9o/ht/1exx.c k5gkpkamb rb9s1 9 d3oitor?

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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 co*qn l,e+r-h zgnnected to a 12.0-V battery. How much work was done in chaeg+ lh ,r*-nzqrging 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 chaoaoi+;j9 px/:w0q v uvrged 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 consists of plates of are3avhgeaq1 v 85a $1.5 \times 10^{-4} \; m^{2}$ 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 consiwf97* 9o ztiv (2qmpfosts 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 off ug)x*j.xypbm w.a/jd khx /ude ,830 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 plat9; bry5d4xmvpl3p4x q e 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 wij8es j1zlt7q +th 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 battercr(o/tx9 hj;osj axz * ty*k+a/1i8r31l e vovy 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 of 5.0, what is the capacitance of the capacitor aftrzy icvoav8x /xoj jhr/ (3+1* ;*tsoka 1tle9er 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 charged. 75pcpvrc1two 2wb j22 The battery is removed and a slab of dielectri2otp5b1c c vwj2wr72 pc 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 slab is inserted?

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