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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 no3/qpmd 7xta9*y .gdnot 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 coulom ys bz10wjuq(buz-i55xw3 r(j w-fy;m b 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 surr.s s ) c3rmihjgj1*kh5oundings. Object A has a net charge of exce* c) m. sj5grjihh3ks1ss electrons. 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 vx/t,lm(+ 6(bre vyb gt:ex/o in 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 twz 6sqyl,7 3udo 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 onj* 1sdl msu q((t*wmh:r-2oqz 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 acktexlaxe +:-;ps24n g1t lfiwc9 1yy6celerated from rest to a speed v by a 500 V potential difference. If the potential difference is chang:1wsa-x9 +ekyttlg 2xi en 1l6f;cy4ped 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 thejs cxbxl8)y31hk mc8x w8ki ;, 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 equik**-lhtmeak puj;t j13 atl ,4potential surfact*l4t1kah; 3-ae tkmul p* jj,e.

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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 bejv,: ft s+frpa++b tgv *:s:lg

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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 elect7q 6ft,9mi;fu3e vg ,rykvo7g dx00sx ron as a result ofd ;oes90,kryt7ug76 xfv 3q,0 fgm xiv moving through a potential difference 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 is7oeo.8iz0cct. at* xd a unit 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 tof ,r9(ce: tkg *dyvg2u

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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,-j xw .c +fuks,fczc;.0 m from a positive point charge is 100 Vcxjz,+; ,w.kf u-ccf s. What is the absolute potential 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 distancv .fqu/ u0euh1m a18mie of 2.0 m from a negative point charge is -100 V. What is 1m m/vu8efiuuq0 1h.a 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 sx2g93grme(n e jw30i 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 corners is also filled with a charge of +nmw 33 js0gx2eei(9r gQ?

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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 squarez9qeqq60hp/ ;/t jb,rtqy5to is 3.0 V when a charge of +Q is located at one of tq b9 6ej;z0qo /t y,t5/qrtqphhe square's corners. What is the absolute 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 chu2e/hhac t ;4marges 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 ish 2a b-3g qwx5cuk0gx+ 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 except that one hasjt:npxx8+e:bdq w *w7 twice the platn e7bwxw8 xj*q ::pd+te area of the other. If the 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 capacitance of C. If the areazz5t 8e co+(vq of the plates is doubled and the distance between the plates is halved, what is the eztcvz8 +(o q5new 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 parallelzg2uklgo -(e4fzj 35ih9ltl0 -plate capacitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates re2f0(ul9h zo4e3l il5 jgktgz -mains 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 ./ins uy c+d8pgiven capacitor is weakened, the capacitance op8s i n/d.+ucyf 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 with constant voltage1h0ddc4o g x.i by a battery as they are pulled apart. During this process, the amount of charge on the plates mustg c0do. d1hx4i

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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 w uik55ui3-fu uith constant voltage by a battery as they are puu3iu 5iu kuf5-lled 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 materis-p7hw g (gvw/ zi6tuxr opr03 k9jd)*al between the plates of a capacitor.iwx/7po*3h 0 sj)k u- dgt9(r6wpzgrv
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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 placed1jyd:z/s p/8qp g xi6blr-mr, between the plates of a capacitor. What happens to ts1jp8mb q/l6:rrx ,/i yp- dzghe 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 between the p4(wxgr8u w9pa lates of a capacitor holding a fixed charge. W a8 u(wpx9wg4rhat 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 battybpl5)vtt r5 1;moak7*m poh+ ery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is ihr)bp7motkl 5at;m 51+ypo*v ncreased 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 capacxwqir1zq *wf 6 ))m+e3ll /zbcitor holding a constant charge causes the energy stored in that capaciti )lmx61q*fcbzrq/wel)z 3+ wor 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 that*.x xn78ofqd c capacito o*7.qfx8 xcndr 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 energy to move 10 C of charge from point A to point :kdgx4tl+q.p B. What is the potential difference between poi4 dgqp.:+xtlk nts 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 frnsxdud8/ dm-ec n;.;*xz4rc jom point A, where the potential is -50 V, to point B, where the potential is +50 V,4 c -xcd8du zx./ns;jned*m;r 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 differ*+1ucji ea6m rence of 500 V. What is the kinetieu1m*+irj ac6 c 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 p4u yq3sy s(4jfotential difference(yfs3y 4jq4us of 500 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 po c4k,j hiv.ao8tential difference of 1200 V. What speed does it a.kch8jv ,oa4icquire?

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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 50zgd54mchf7r fhd y. 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 ofo-9un w1t- k8gdeog w4 500 V. Whao9ug wewg8t- nkod41-t is the velocity 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.n-dh;2w(og gi f, wzmeg7h /v5 The object is accelerated from rest through a potential difference, afm/g wh7i(z gn,2w; vgd-oe5hnd 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 potential bkoh4- 4viw;x z0+wxedifference between two parallel metal plates separated by 1.0 mm.4oxh4z-w;bvke +x w 0i What is the electric 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 fieldw2y 1gsqdj2b) , with a magnitude of 500 V/m, is directed parallel to tjsdg 1byw q)22he +x axis. 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 elnyp/d-xlfq3 u6jbq.eit 06g8p+s/ vo ectric field of 50 N/C directed toward the east. If the voltage measusb8ypdpx-f .6 q e3uvq/t l/+j o0gi6nred 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 3.0r (uxgs6kr q2+ V/m. What is the change in kinetic energy of tsx+g(qr26 rkuhe 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, separa+m ua wiiwya ;d5p:5xtn40b4gted by 0.20 m, are connected to a 12-V battery. An electron released from res4ip5+w;0b tmniwd x:gua5y4at 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 0.20 m, are connected to a 12-V battery5rp7midzh.qs28(ju+/ qn m */ rnvvxv. 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 posi5/rx qq v2vhr /7vus n*+i8nd.jm zp(mtive 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, separ0bbn,o axvl 38ated 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 nbov 0a lx8b3,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 o lgfbxwzwwclo , zx i *1 )*8im0;umu4;.b7fitoward the east. If the voltage measu xouc z;;4ligiowwb 70.8uf )b*wzm fi*1 ,xmlred relative 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 electric field of 50 N 5: eea4p.9mk7ofovno/C directed toward the east. If the voltage measured relative to ground at a9e fo.7np4 a:k5omoev 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 through a potential difference oufak .,(tyc e5f 12 V, it will acquire a kinetic energ e, .f5ctykau(y (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 distanp qg:nze,5 6cu9wam6pce 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 meter stick.e5gwpd,c 1z6)jt 2eff/w sr/r Find the electrical potential for t 2frt/ ewcdws ,pgzfr 1e6/j5)he 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 (0whae :-pz (6ur, 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 aepuz(wh 6r- a:t 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 zee-tn:q5;p5pu zz z/r .:zgk charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential ener:.zzzzep:r - ezpn/u qg5; 5ktgy 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 tfqi +h 2pidbu+.e/ 9lghe potential is taken to be zero at infi 2 lf+gbihd./iuep 9+qnity, 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 +q are placed at theuec 7lhj:sdm03) y c:t corners 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.mc3d) :j70 lst hyc:ue0 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 of8376vftbnwy. zaqx1 fwv.ee ; +4.0 mC are placed in two diagonally opposite corners. In the othb.vfy 3n.1x;wat6 ewv7z fqe8 er 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,a5m:q4d va (sh 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, qjp.yn9g-l0jeach of 2.0 mC, at the corners of an jlq9 nj g.py-0equilateral 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 plat 4i9so gqo p5d2nexw-4es of a 2.0-mF capacitor when it is charged to 100 ispeo94qdw 4x 5-2ognV?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capim;uvo+r,m 7dolc avw1w -)2gt6di 2qacitor 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 separatewu7vk k 8z :3tzc u01czq v7l9ki5zli3d by 0.050 mm. If the capacitance is 17.3 pF, what is the 5vkztk0zuz77q:i8kuli wv9c3 zl 3c1plate 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 l kwd xgtall9utb;a 68h5 +/h: ae.rc6plates 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 capacxa 3o4,)p /ev yvy*, wp(mpcbppjm(q,itor has a plate separation of 5.0 cm. If the potential difference between the plates is x) pcp,ypepoj*(mw/vmabp ,y3 v( ,4q2000 V, with 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 pbh /)-o-oi-ebox f0u connected across a 100-V battery. After the battery fully charges the capacitor, thh-po0i)/ -oxfobu - ebe 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 capacitcn 9r7c+p;+g gv,cyapor. How much energy is stored in the capacitoa gr,gncp7+ vc;y+9pcr?

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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 ai+r dxwp 7/xk +pbad49 15 mF capacitor. What is the energy stored in the capacitpbr id+x7px+a 9/wd 4kor?

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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 capacieckmkj- rfhk02 v06ot w3bn94tor when it is connected to a 12.0-V battery. How much work was done in charging this capaci0knrwht209bvj kcm 6 f3ek4o- tor?

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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 chargedfz blu) - j7wb5l ahdx6v+0tc9z2zk4c7bv8 mx 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 p;7ae c47ct 5 imygo1nyv7ob+tlates 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 consqt (sas 8l,+pbists 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 of plates of areaf*g oad/d s.8: 4zohhth25pp k $1.5 \times 10^{-4} \; m^{2}$ 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 area yiuun5:,+ge vof $0.40 \; m^{2}$ 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-j og p50,a w pwx9eea+vzd( t8y7ia-u 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 a z :vjo4 :c/ 5zz-hsmt25pqjidnd 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 thesp4zjv2:5mz o c- jh/iz:qd 5t 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 charged. dqm85e :sgogzw+t6zb,iabkw1+xd2 -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 + ggme x b dt+wsbi- z5awodq82z,1k:6capacitor's plates after the slab is inserted?

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