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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 not a v8k gj 1185cs9c v bdxaco9grx;ector?

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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 aens2gx)dn 5uwm t l 3z.8/gnz6f4s -ta

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two identical aluminum objectsf/yvg-k9i ) gf are insulated from their surroundings. Object A has a net charge of excess electrons. Object B ig / vg)f-yi9kfs 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 i 2la:9 kn hf11sur8akthe 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 o+1 t6h/e ;bosr)hpkrypposite 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 areecpo p*f l nag,lj62nqf(460n placed on 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 accelerated from rest to a speed v by a 500 V pcrp f(*jba84 zotential difference. If the potential difference is changed to 2000 V, what will the new speed of c(8ra4p fbjz* 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 ;c mg8n,a .yfudr-pr)ggw 0u. 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 equipotentx w-vn0,9gr 9fyntvipns:0:n:7us wh ial surface9,fnhx:gn 7 ntr-iyv9 np vs:wu :0w0s.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfxtimd2;)i5 el ace 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 x su64pr0bensf k(9t 2electron as sf br6x 94n( ps0tu2kea result of 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 is a o j/t(+va )i,ulxhlrmxb3z ,z htv49 2unit 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 txt7anm s22 s .gj5he.jo

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potentialp nw4gn 6( /73dykewgf at a distance of 2.0 m from a positive point charge is 100 V. What is the aw 6(ennydpf47wkg3g/bsolute 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 distance of 2.0 m from a negative point charg68 9oh: v mudgvb;sgd5e is -100 V. Wh 6buhg 9 ms5vd8ov:dg;at 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 exact centerw 6a geimj 8wkkz:lj;:*(4p .tfyg.ss 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 p.g ;jej8itw 6: s g(k ys:z.la*m4fwkcenter 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+mum3cog(wrr x / v/m. charge of +Q is located at one of the squarc /o3um wr+m/ rx.g(vme'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 ch8ueq3w lhdz3eu- g5k *arges 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 iy8vjis5+3zu c s 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 capacitos;/p ov ms50)tajo/bo rs are identical in every respect except that one has twice the platp;5o/o)bsvta j0/mso e 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 area of the plates m* rq j,wlnthh.:; smud7y:+i is doubled and wl :mumqsjtyn:*hi,r.d;+ 7h 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 ve gg78h zru11.vzcl3 plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains c 131glcz 7gvvu8 .erhzonstant.) 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 capacitor is weakkg0z* t+ (lewdened, the capacitance of that capag(e +0tl *kwdzcitor

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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 maint ga+nu.i+x/yk ained with constant voltage by a battery as they are pulled apart. During this process, t+.ungyi/a+ k xhe 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 xj7ch- xu c )ah1m:(caare maintained with constant voltage by a battery as they are pulle cxh7 um-ac:1ax h)j(cd 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 ma x2bvv) .: d(bnsns1dnterial between the plates of a capac) s(nb2bns d.:xnv1 vditor.
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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 pa924kgzb/xj m xper is placed between the plates of a capacitor. What happens to the capacitanck bm29 4zgj/xxe?

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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 (w cp*(rz xbja1 c;2lythe plates of a capacitor holding a fixed charge. What happens to the electric;p2(c*b1x a jr(w lzyc 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::amm rw/ce l- and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no char:e cm a-l:wr/mge 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 holdip37 oteb9gmk e8bm*:hy-+z fk ng a constant charge causes the enereb:9by 3phze t+m-m 87o*kgfkgy 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 given capacitor causes i -rhukd b 3 g.99p7z /.shwrrw4k.mbpthe energy stored in that capacitor rz.hu dpwri- k .gw4 9b3 kpbr7s/.m9hto

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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 B.vefh + 7ot7ahvt 2agj/ ;k.ct3 What is the potential vct;k. h7htav7j2fg+ /3 teo adifference 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 poin1w(k a 2zeyf5glyk4f)) fm bb(t A, where the potential is -50 V, 5 f byfgw m2eka(y14b)lkz)f(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 throughsr vo5i)k/zl8 an electric potential difference of 500 o/l5 8s)rkv izV. What is 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 accs ;qa:.m+wgi;uhwx(jelerated through an electric potential difference of 500 V. What is the s: (u whg;qmi;w+sxa.j peed 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 thrtj2r; *vc)pes ough a potential difference of 1200 V. What speed does it acq te2rj;c*vsp) uire?

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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 irv2 p c+:z-mnin 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 diz sx unp83:z;yfference of 500 V. What is the velocity of the elex83zy;u sz: pnctron 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 char1w5) -.ud hb/;5avsdxw jtawdge of 20 mC. The object is accelerated from rest through a potential difference, and afterward d h)wjta 1vd5d./bs- x;auww5the 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 .p un5xbd8 /yldifference between two parallel metal plates separated by 1.0 mm. What is the electric field between the pbpx/uy5nld . 8lates?

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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 izpe -qdd rk2d)aa3ar5 o3-4aV/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, whato dda4 - azadk3 repr5a2-i)3q 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 5pw4j:ne1i ff uqy 31aoj6. ynh*7fp(w0 N/C directed toward the east. If 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 that pointun6we 3*y.(o1nw f7 ay: pj4qhjffi 1p?

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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 mcpvd 9 n u;(,gt+)*w qsn)uvugagnitude 3.0 V/m. vqu+v u;wcsn*n9g)),utp (g dWhat is the 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-uw2b;n;kp ix8wk7 hr9V battery. An 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 the98wrkn h7iw xb 2up;;k 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 battery. Ax5x7 /as/ esfhn electron release xfs7/shaxe5/d 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 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 connectlb7nz)f2a- 1avf4bi qed to a 12-V battery. An e i )12fnqzb-abla74 vflectron 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, 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 oci(3eq(;xaqy f 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 voltage at a ;q(ic 3 ye(qxapoint 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 dirw 4o.bn1n(xhuwhf:1q , r6me rected toward the east. If the voltage measured relative to ground at a given point in the fieldmq , (46ruwh. 1rw hbnxe1:ofn 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 potentia bvo (p gc-b:7*isuhw 9djjd7+l :fqn7l difference of 12 V, it will acquire a kinetic energy (in the absence of fricti+ (:7d77b h9gvf :j-ps clwouqj*ibdnon) 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 potentiamlyk ga79wu4 h di7nm+a12y; nl 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 the ends of a meter stig7uw0rg2q 12+vehqr6j mwgki 5 ,s 8mdck. Find the electrical potential for the center of the meter stickjr82rq +2 5wmsm701 6qke ,gugigh wvd.

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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 at8ls 46z/;n9t3l.m qsfwmc czy (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potenti9/l 8 smcs.myzwf6n q4t3z;l cal 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 -2.0rjw 5,xoyd8k) -nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge o8rd,k5yxjw) 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). mj7c o;q/orc 7mod15nIf the potential is taken to be zero at infinity, what is the work required toq odn7m o1ccr;/ m57jo 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 the0tdkcsynl ) p sc )6.czi2bb65 corners of a rectangle of sides a and b. What is the potential at thezci6bl)kd.p y0t6cb )sn25cs 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 side. Chargesejj kj0 u;/ 2r5g qe.-ceeqv0s of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential v.0q-jc;g qu / jek0seeer25jin 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 (chb1.3ye0w wznl /pz/z1xqp,x e arge +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 three0opr g / iarynb k+*f7u5ux,ky1(q9pt charges, each of 2.0 mC, at the corners of an equilateral triangle 5r 0u o*kx91qf/utk(rpy yi,7pagbn +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 of a3 y212luxrfzao /pmfr y+wv-1ju 1 bb9 2.0-mF capacitor when it is charged to 100 zu31pyrx+ r-l11 w2/9vauomfbfybj2V?

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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 plates of a p 2n0t;9ymy61 xrrcl.xzp:k yrea $0.50 \; m^{2}$ 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*xwb2f7 4nia3cs57 lne4wzds filled with air, and the plates are separated by 0.050 mm. If the ca nd3*n7ciz s27wbws4al45 efx pacitance 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 capaci8 v h,ndwxgsp7c3 ;-+:qbkmr qtor 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 htclb-vju)g d.w:x - 526 mt,gn5 vuzvwas a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, .5 ),vnu- dv6ubzt-2tgj lxcmvg :w5wwith 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 con )kljjqly,0: m dhz,n-nected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.)y,lmhl dnzk , j-qj:05). 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 capacitor2p )aj,,*sz 6qnlx 6v bee6cesnileega c.);1. How much energy is stored in the capacitol2ipes1e*cebq)6nec,zvs a,jn; )ael gx. 6 6 r?

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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 c7ktly96h bu5 kby25ip9am t3m apacitorybp ht56y2 mk9 m a3bktlui579?

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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 plzvhwf*go 0tf.w ,a4n :ates of a capacitor when it is connected to a 12.0-V battery. How much work was done in chargn:vzato4w,g0fwf .h*ing 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 t8hqia fe:m4uo4z m65 ghat 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 oijjf8a9.j x z k kfc8m ;6ry;d7.zxm;zf 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 capabit7bq*e +j p4citor consists 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 co85wbj)- 2n9s r dgxgrrnsists 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 e.pazu7rvi( y+ lm 9mmc :39jdwith 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 constructed with plate area 2zyr m*xxi(f, 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 batteryv,5r y,ac55ggzyoc; k and becomes fully charged. The battery is removed and a slab of dielectric that completely 5v ao5,;c5g yzkyg cr,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 , yvqi3bv)pmutn ;u2 (a 50-V battery and becomes fully charged. The battery ; mu3pib (qu2vt)v yn,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 slab is inserted?

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