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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 ish:11bwxl h aw dq25t-c 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+,lnrxz0 :eo9xsb u ejs)* (ox is 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 surrms y*8 dlyno zfi,/c+6oundings. Object A has a net charge of excess electrons. Object B is grounded. Whi,y*nf +cio 8/d6lsymzch 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 +zy1 )tuv,k noin the direction 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 elecil( xgxr*64ia3ql .hvtric 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 spd)0uis+ mihvl gm+ ucr288:a bhere. 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 acceleratewuwe+ei: :kwm,+,5 d .vzpsj ed from rest to a speed v by a 500 V potential difference. If the potential difference is changed t+ wv:s,u e. ekz e,w:w5+mdjpio 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 tt3dpwjf 3x/0 do 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 poinlu/g-92 yd yrvt A to point B along an equipotential surface.yv2yur lgd/ -9

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must be0swvx rf5ckjk-18)io x snhq.-r5b2e

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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 ch)ybr9 j3jeojxrly,7 ;arge equal to that on the electron as a result of moving through a potential difference of one volt is r,rl9j3y re7j;joy) bxeferred 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 u9db qk2yeua;s; 0r nn5nit 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 to/kmq0;( kd1 sgltz4yn

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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 point2mj*3 llx;+zu z *.pcvlfbx7 m charge is 100 V. What is the absolute potent*2.mlxjxvzp+ f u*zb m;3c7l lial 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 do-nagdb o9.5 wnuqq 89do3fd- istance of 2.0 m from a negative point charge is -100 V. What is the absoluqofad8o3od9 -9un -. bngqd w5te 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 otjvz,ec4.* ayqkl9e2wc(n d: f a square is 3.0 V when a charge of +Q i a:(q9wykvtdje .czn24*,lces 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 +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 atp93or lh/3p6(a 8sb ;tf dutaf the 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 a seup 63f/ bra;sph atf(l9td8 o3cond
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 ofs*kf i)dco0h (-/pq lq 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 is a9jdxah5.1qg30 i 72hnapgc bk

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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 except ro6o +heb)etb65oj+7 pquj,ethat one has twice the plate area of the other. If t6 t 5+,jhbe)o rp67jub+qe ooehe 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 capacitecqo6)ai-wh cvx-6n0 zp t7-z ance of C. If the area of the plates is doubled and the distance between the plates is halved, w6pc -hztzenacx q)-6v7 ow-i0 hat 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-plati6 ( t/iizaeamr /;q+)5h/rwh jkbla:e capacitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnecteb hw; ke// /a6ai:hqit ml a5jir+)rz(d, 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 /awc;8st+gf ks6 s0e pcapacitor is weakened, the capacitance of tf6gc0 w+a;/s8ss pekt hat 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 with constant v .m*m/ slvef3tm+qp)moltage by a battery as they are pulled apa)f/vltp mq.*m e s3+mmrt. 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 maintained with constant vz 59czpw5d5 u whogq-*oltage by a battery as they are pulled apart. What happen5g zz5u95w *oc w-phqds 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 platyhsi :;-ryu)tes of a capac; rut yh-y):siitor.
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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 ji2 (yw6lged02pvt,;ut y.lg plates of a capacitor.yg.i2jg2el;tv , (d wytlp6 0u What 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-6h bfiuxt i hku0uhda13r; :6 placed between the plates of a capacitor holding a fix0u 6 :fb diu1;hut-h3rk i6haxed 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 capac*fddzp*v 3)hz xkw 6/gx 4 fvp1zb6k-uitor is connected to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off.hvpf3b-14dfk kdz 6vgzx)w px*/ z*u6 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 constm: t)0c9gztmh ant charge causes the energy stored in th9tthgc0 m z)m:at 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 tc*b d9nzi 95uchat capacitor tozbu d*inc99 c5

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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 10ibtm k7ht46yx (3e 9xp C of charge from point A to point B. What is the potential difference btphkx3im6ty(ex7 b4 9etween 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 point A, where the potential i3 sz w:ynrt7/wcfh ya5w)197amivb ,fs -50 V, to point B, 7wm/ ,aynf rtfcyww71b)is:9 5z3 vhawhere 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 electric potential differ9p6/g(z8jl fd(wdrz mence of 500 V. What f/gpwd (9r6dz ( m8ljzis the 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 rest, is accelerated through ah2 klub)g*6 kr 8lgt;2bb6 *b wikfj:an electric potential difference of 500 V. What is the speed of th62bb t826gk*uhjr ;klbbkg:*ifa)l we 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 th4 d37hsj1a 4rfgodvv1rough a potential difference of 1200 V. Whars7f4ddvhvg31 4a o1jt speed 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.hu7ni3vu,pypa6.qh fw74qv-t :u o7p 0 V 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 accelerated through a potential difference of 500 Vow1,0t 0 q-luk vf5 +aqdcvgm-. What is the velocity of the eu0d05-f,qc tkg1-v vo mwalq +lectron 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 accelerh9t2j(i1sdx ,js (yg sated from rest through a potential difference, and afterward the ball is movinsh2x( ji1(9 jy,gs dstg 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 potential difference between two paral; tjb1 mhlsc09lel metal plates separated by 1.0 mm. What is the electric field be ltj19c;sm 0bhtween 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 parah6 hui6s)lrn2llel to the +x axis. 2u lhirh sn6)6 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 electric field of 50 N/C directed toward the east. If a,s;idv*yw l1 the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of*ld; ,vy1ia ws 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 aloe *wvzikw29m1+ pzx k)ng the direction of an electric field of magnitude 3.0 V/m. What is te x m)2pkz9wv*wi 1+kzhe change 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. Am -wfer.sjj r ai:sk;k/ e5+0an electron released 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 initialk 5-.jk j/0;aswf reaer:sm +i 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 connected t0kxqr/qw). fvm4v( b iobtez 5o4 ,pt5o 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 posiikz4/(4xtq oqp,mr)o5 f .b0bevwt5 vtive 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 battery. c2 j*5e3tiefmv+7d syAn electron released from rest at mc7 idvft*5 s 3e+yje2a 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 the e*s9 5bfjpnm0jj)i )fu kd8x o8ast. If the voltage measured relative to ground at a given point in the fie)f k0p5i*dbs ofnm xjj8)9 j8uld 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/ s;i8:zpgbzl2ow a6; pst kn78C directed toward the east. If the voltage measured relative to ground at a given point in the field tzina 6ssz2lk ;8:7g ow;p8bpis 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, it will acquire s1*dm1sgj 7 jzc1d4s ha kinetic energy (in the absence of friction)smg 1zs s1dh j1*c7dj4 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 mo3vv ;zk)kpual7)g mv)7p8c $5.0 \times 10^{-10} \; m$ 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 a.k.yc3+60nv*shtie -m.y rky h octy;re at the ends of a meter stick. Find the electrical potential o6+; t.tr.-chkyh.kye mcyyn3 ivs*0 for 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 gjsjf27be(bi c bq4ro *6i2,dg)uyl:h4y m l3charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potentiale:mou)yjsby4fr i6 l ,3 bli 7qhgg4bc*2( j2d 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 chargen iyevf*8vk(n;hr45g is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric e nivv8nyr*;( 5kfhg4potential 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 charge is at (3.0 m, 0). If 09ightyk1,-s*scd- t5wc si ythe potential is taken to be zero sg5t s - ywk1,h9 -y*d0isctciat infinity, what is the work 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 vip2f+ /ston-f9z2gzrh ,+k c+q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rect +kcftr2h/vg-ofn+pzz,i92 sangle 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 two i0eb4 lfj;a (;w i2z/eivg8fjdiagonally opposite corners. In the other two corners are placed charez84;iiv e ai(2;/f 0jlbgfjwges 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,0xu 6 c0 m1qfpje9ka+i 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 mC, at thip6tuic1 hh 6,hfdw 59e corners of an equilahupi5wd 16 69,cfthihteral 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 the plates o,1 u wxai, ntsjq;)4gef a 2.0-mF capacitor when it is charged to 100 n;exut,)w4a,s1gq jiV?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitxp 74vk w-qb/d/yyzp9or 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 isoien0 fxres6 2 en (vc8kyma(j-bw0/: filled with air, and the plates are separated by 0.050 mm. If th8a w e(:0 n(yvfe0j-k 2ios6/exmrnc be 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 capacitoroo r79iiswyd1k -s3p, has 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 separatioknwk(t kt5 +1/k0vljrby3r p4n of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher knr01jybkk4krv3 w5lt(p +/t 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 100 iqlc 7:jtmuh*pz ud:e699s.g+6ub qu-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transforjseu p uz6hcu :gmi6 b:quq97*l.9td+mer 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. How muc v/dmhk0qhm 32h energy is stored in the capacit3d0/ k2mvhmh qor?

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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 across3g,ki vp: hgya(9z0 iu a 15 mF capacitor. What is the energy stored in the capacitor?g0yz,p9 gh( k av3:iui

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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 capacc;w q:m p8wp7 (juju:oitor when it is connected to a 12.0-:pc (j7q;pmwjw8 u:u oV battery. 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 charged so bf am3v /pmo u3d8tb-.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 plat9wgms(t q2n1j s/r ow+kke6 8tes 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 ospl4qe/g,c s 62jmqx.f 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 ) lhz.lkn(m /1bqf/sos 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 pla.dksu , 4wxy *s(:h79he3uytkzk, goste 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 with pla2mwgy7ign/ gz6 zvpm32,k 8wate 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 connex6 m 7to:9qwwxcted to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If tht6: xx 7oqw9wme 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-Vry ;5t2fxu n3n gmbp61 battery 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 diyt2 n;mgf b561upxnr 3electric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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