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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 ve(e-qb fyfx;t7ctor?

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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 ay xvkr swp *ddmg7x3((95 b q f2l59gr.lk0qup

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two identical aluminum objectsp ze(so(y:e3e9ep5 go are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which obe(ey 5ez (9egpo3:o psject 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 *a 2(hkzf wvt7dm0 c,utxo b94the 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 electric 4z w9wca-p,k0 9fzzw 8wfxom7 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 spherpruah*;wjffvhre+ *ka:5 l232j0 t m/ hy. wdwe. 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 accelerate; 1 3xvapl/n9yu4yuqrd from rest to a speed v by a 500 V potential difference. If the potential difference is changed touuyq31xyra4 /;p 9nvl 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 to a c7e53cs i7c,2sheb/9e klm lvs

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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 sh2(l g)ona+4 vl gv+tpoint A to point B along an equipotential surface+gnlv l2as4 g)(v+toh.

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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 bel 8co qz tytbg06 94dq6uyt;4 0oc/klt

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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 carz(pp7ot ,gm5urying a charge equal to that on the electron as a result of moving through a potm, u5 7ptpog(zential 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-7wkk) veo ijo4+ qg2o 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 corresposl mznqm7k7 +*1kj x;fnds 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 distan (p )sk0s*/cls4qq7b tdx4kesce of 2.0 m from a positive point charge is 100 V. What is the absollx(sq /4d)qe*b ts47 0s kpcksute 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 i 5f0v lc /(4pf.re *4)8pggmjyrgboj negative point charge is -100 V. Whate(r lybggmf*v pr.iocj/j8p05f 4)g 4 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 cqv:z tnh(ok49lg7* w eenter 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 corner n7oq 9kw(4evhgt*z l:s 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 loil84povg)i4 7ku2pwhen a charge of +Q is located 74lklvu2ioi)p 4p og8at one of the 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 ay97p0vc(b zs 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 ikjy-;,cj ez- qk)clg4s 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 / xch .xh-oi*krespect except that one has twice the plate area of the other. If the smaller capacitor has capacitancc h/-*o hxxk.ie 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 capa3riyj hmk55:x citor has a capacitance of C. If the area of the plates is doujh3x5 5 imry:kbled 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 idj; wte5.c 3fa;tu 3 2gqh/-hjur 8lpcapacitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the platesh5 - fjuq/3dcailejg.t83;r2w;p th u 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 tc .--r6u n hpin-kdx;capacitor is weakened, the capacitancexuht6inndc-;p .- r- k of 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 capac65uvf+ z6 dcp0qfrb4q itor are maintained with constant voltage by a battery as th6dpr cb06z 4f f+5vuqqey are pulled apart. 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 cons+n r)s5soii*0s rrx; qtant voltage by a battery as they are pulled apart. What happens to the strength of the electric sq+rri5s;o*si ) rnx0field 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 adlv/eh60lnq8 f ding a dielectric material between the plates of a capacitoq8 l6f0hvn /elr.
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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 pap3qm :ptf1+la cr-xu.: mc d8.o;gooc q, ds/ojer is placed between the plates of a capacitor. What happ.dc/smr djtu oqplog -,co:+oa;1f 3mx.: 8cqens 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 px /e,rm cw hy*rw3marq :bz- wrn)n;51laced between the plates of a capacitor holding a fixed charge. What happens to the eler:w rb rrw wy3m x;z-m/5hn,*qne a1c)ctric 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 connecdo7 (wn))cj/dkq lsq ;ted to a battery and becomes fully charged. The capacitor is then dis o/jq;)s)cd7( wl dqknconnected, 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 capacitorm jy6f o/rh:2b holding a constant charge causes the energy stored in that capacitor6r2/ yhfj:mb o 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 i,at z p(:i3h1tzdm, kthat capacitor1dkiz it:ap(3 ,,tmzh 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 movveq,:(ml) 5c pmt )eqre 10 C of charge from point A to point B. What is the ) tq5vpmlmc,:q(ee )rpotential 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 po8 e22.c2fh2et, g :k zqx cvbqg.hzm9cint A, where the potential is -50 V, to point c9c2 :,mkg q.8ftv222qez.cgbh ez hxB, 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 acp hzfhb9y/n .4celerated through an electric potential difference of 500 V. What is the k4 n b.yzfh9h/pinetic 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 ubr .vqi28f-0i n0ybnelectric potential difference of 500 V. What is the speed of the protoyn r2u00q-f 8nbvi bi.n?

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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 potentil c0/6sa/ jl7(g:lco:dh8jh sc, khnoal difference of 1200 V. What speed does ihnh,cd:j8a skcj0lcl:o h7 / o gs(6/lt 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 9.0 V do in moving air5a3lzg dki :,2 fb.u r6;lj$8.5 \times 10^{18} \; electrons$?

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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 differenceb bkb (mz(j):hey* h gzo7i2y+ of 500 V. Whatybgoib7 :zyhz( +(2h)em *jkb 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. The object is accelerated frpc7.pzrvqjh 6 0x*kl4zmb 8z7 om rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potential differencem q 8ph64*rp7j zzcvb7kxl0z.?

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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 elaq.5gr xkec 5u0r y4s5ectrical potential difference between two parallel metal plates separated by 1.0 mm. What is tgky rr4q5se5x5 uc a.0he 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 field, with a magnitude of 500 V/m, is directed paralleloy;3ksb kfb75vv .xb 3 to the +x axis. Ifx53 ;b7 y 3skvbvfokb. 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 the vosl - 8g5aqg 8esga7,uuhzsf 41ltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 a7ua -g ssu 8ef,zgh18l5sg4qm 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 alovpwmn59p p30f/hmn a-ng the direction of an electric field of magnitude 3.0 V/m. What is the change in kinetic energy of the pron 5f3h0nmv-pmwa 9p /pton?

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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. Ahc/(bvvb/ tnt.1d+cjn electron released from rest at a location 0.10 m from the negative plate. When the electnc vbt +/v/j1h.(dbc tron 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 hr0a1b4b j)xer2c mp/-s p+dn connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrivnd2/mp+a -04be sh1rpr)j bxces 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 connec3 q.20rygjdb1hgatx5 pzc2+b og 9b(rted 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 0.050c .d(30yb+tz9p5 1h2q ajggo brx2rbg 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 east. If );j,ay (e ydnd+1cqzrz ew*- rthe voltage measured relative to ground at a given point in the field is 80 V, r1zycyrq, ej;)w(ddazen*- + 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 elecpo-f 6 ro +v.iqoh.4dotric field of 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 point 1.0 m qdo+-v io. h po46r.ofdirectly 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 pote0 gsju*cmr( cuwdb54 6ntial difference of 12 V, it will acquire a kinetic energy (in the absence of fric(wrju *u50 m64cgd scbtion) 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 dim x+uf(i7zv og hs947ui(/glz stance 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. Find the electrical7 lftuyip-) 2wpz,8me potential tpf8 lz ei2m-u )w,p7yfor 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 charge is at (3.0 m, 0). If the pot.:u+b rcgflfq 3*h 5taential is taken to f gaq5:b3ct+.lh*urf be zero at infinity, what is the electric potential 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 ako;c2uk ly7nfd ynw6(h. :q*tt (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 ;n .o6fy7 dk:uqhc 2(wty*nlkelectric potential 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 (0mmyp4nip v3i 4ad5n-tty9 q,2, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infipy2dqt4 ami n- 5y3vt4n9,m ipnity, 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 tb g+99fytg+ uiqz:a-+q are placed at the corners of a rectangle of sides a and b. What is the potenti+a 9t+g9y:bt-ifuzg qal 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 side. Cha,k/wo:rzbi ; e5rj-t brges 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 b wji ;z:-rk,tbe r5/opotential 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, e(liaog 3kb* v((i9sv 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, uj l qkf,byrm(u :5k4)each of 2.0 mC, at the corners of an equilateral triangle of side l um5j4 )(r:b fykqu,k2.0 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 ofgty3m;pg9 )gbvf s+z1yl;2r n a 2.0-mF capacitor when it is charged to 100 V?t bzmvp3y 1n )grylf;+2; 9ggs

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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 area kvkn/ *q-6(7vttmhd /tudk p:ax d72u$0.50 \; m^{2}$ 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 separate p m2imat1 f)g/e,kzrr ed:w*7d by 0.050 mm. If the capacitance is 17.3 pF, what is dewg7 /a*t, mp)kr re:f1 zm2ithe 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 ha3 :2:a/ic hohsc tod0is 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 separation of 5.0 cpy7qwuwr 1*y f5w;1snm. If the potential difference between the plates is 200uwspqyr;w5*11wn y 7f 0 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 con*rs4ulg 9 ycjji rcqt;w*69+k nected 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 remained connectedcwj ri9 s9kcyq *lruj+64*;tg 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 capacito69b dphd :qg8a5uc 8cir. How much energy is stored in the capaca9pd58 d8qugc6h: cibitor?

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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 capap46wna. / dg q -5dx.u1ooxsoccitor. What is the energy stored in the capacit 5o 64op.1x.ag noqxd-wd /ucsor?

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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 capacoy-nwg oxn o.py98oxf1/3 xf5itor when it is connected to a 12.0-V battery. How much work was done in charging this capacit.xonox-8g591ywf/n ox f 3oypor?

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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 tnsix26 +j0qfi- qx1 q9ajzjc6 q; zqz9hat 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 a : *olsk o: ony(av7x4tim7j9hrea $1.5 \times 10^{-4} \; m^{2}$ 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 i o b.r:rf,j9-a(naxxq9ao0b 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 pla zz9l;cai( kd6tes 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 constchpt3i+ n4t 2pllk r0,ructed 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 con41guz 6 u9kps trrd/v5structed 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 and becomes fulkk 4 sfaxoj/v 2c(3j08euhf4;t h/eztly charged. The battery is removed and a slab of dielectkts/3e j u/;xt 4af0zh j4cef(2vk8 horic 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 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 becomi2b ;q4;abz ozp3bw y t-gfu43es 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 volpb;o-ia4gz3y42 uf w 3zqt;bbtage across the capacitor's plates after the slab is inserted?

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