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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 vh0/thb:thv3w zcn2 (o 2kjk 5not 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 i;2y s9lfvb+j 3ywv3 8t8vakk ss 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 inf.w; pcy9uvia7wltbh p9x+* 9 sulated from their surroundings. Object A has a net charge of excess elhwp 7tl+ * 9bixuaw.;p9 fyvc9ectrons. 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 in the direction of the mu)2zkm cng tvv*- ;fb4vxo:+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 iw d z6k-wugb5t6ze2v6n a direction opposite 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 are placed on a hollow conducting spheilh ca8vj 5oq5rd;o:hg5;0zc re. 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 ehe7y 5 br.-tfxg 2ig8to a speed v by a 500 V potential difference. If the potential differ5byfhg7xri2gt. e- 8eence 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 at the same hb6j-b,)y34vbvgmg 4qen2qf 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 equipotentiaymlnfz* bwu 3nf 1-l2) k.m2ncl surface n ).y-cwzf f1um3n2ln*bkml2.

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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 beqh1mvl9y +la5 kw *u ikatvg -fs48w0)

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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 thf/fbikp e: r7 6nf5ycqkt; uz *5z8ft;e electron as a result of moving through a potential difference of of/rt;f e8k *zpct:n;yzqi7k 55f6fubne 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 - 07 a +hfhq0ub2ptsmsa 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 correspondsfvhxjjl)n(w -6f2 k 1k-h gjc( 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 from a positive point ch9kq0 2bbzj 4j ck8apu(arge is 100 V. What is the absopa (zj 2kbj u9cbq48k0lute 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 distyec+ zk+i* sd:f8dh2axkf: /mance of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same poi+e:shkxd+a 2yi/ m:dk* cf 8fznt 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 is 3.0 V when a charge ofx tvf11.tk xr- +Qf1t x ktvrx.1- 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 +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 isbf sc)nt *a k guxo7nmu: .:72gt-.sjh 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolnb xno tch. 2)mgf-kuust *7s:a7:g. jute 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 o h2h,kv*xnd/o f 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 8kgnn /tffu n e0vmwg,d:j 2vx7/x0ixh, * ,oua

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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 lc 5qx )wd2u(cidentical in every respect except that one has twice the plate area of the other. If the smaller capacitor hcqld2 5()ucwxas 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 yy:ab;(c0 k q4w+ -lgwefs3rza capacitance of C. If the area of the plates is zrga:;fs0ey (l w-ykq43c +bw doubled 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 capac) ,6knw.h,m9x2e qpn.kg*fatv y n8 spitor 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 happens to the potential difference between the nw,)ps. fmt xy aqg96pkn2e nk,8vh.* 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 gih nj o5ssi0q7au )0kfmx9on11ven capacitor is weakened, the capacitance onfash ik00x)1q9 u71m5 j snoof 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 cape 9p,q 06ojxaeacitor are maintained with constant voltage by a battery as they are pulled apa0qe,j69xe p oart. 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 main ks-efaur3ni ow16(o(tained with constant voltage by a battery as they are pulled apart. What happens to the nuw(-a 6oir3o(1esk fstrength 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 betwef i, phbcoker-1b7s (7en the plates of a capacb-bho7r1e cip (sfk7,itor.
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material suc; n-y.7:mjnyofg; gg ph as paper is placed between the plates of a capacitor. What happens. :ggy m;j o-;gfn7ynp 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 sb2/ ,fnjmcfn 5xzdumm 4vpkn4 e9 8f/6uch as paper is placed between the plates of a capacitor holding a fixed charge. What happens toj4m n9c6m28u4 /bznkn px / mff5ev,df 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 co5x;2rz8xk4(jww02 lqfz d s il7wh.rmnnected 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. The energy stored in thj lrx8z2x4l m7f q. sdwwk5;0(2rhwizis 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 cj se 2jr)w. k9lds7lgi3 ;x+fuonstant charge causes the energy stor uskrxs l j.glef9)d2ji7;w3 +ed 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 thez*9lt2 t7c.pw ac5cg u energy stored in that capp5 cgzt.*2 w9tlcu7caacitor 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 pgfw2a1/ n frhj2iu/ 6ioint B. What is un1f2j2/a hfii6/gwr the potential 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 def d4w2f9a :gan electron from point A, where the potential is -50 V, to point B, whereg:fdafew 4d29 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 accell7g c phevgh17/ ygd++b 6db(zerated through an electric potential difference of 500 V. What is tg7dbde7+1g(+zgb h vchpy /6lhe 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 an electric ra 0:j( az fdp.m8 qxp(h*sxr7potential difference of 500 V. What is the speed of the proton .hx*qsrd8 f7a px(:rzma(j0 p?

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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 proton9k4w6-sq0nwqq,6hg ls v dp i2 falls through a potential difference of 1200 V. What speedslw q-q 6 kwsd46h0qpgvn, i92 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 97-w;c0li wxdn4n c8y-ky(vw x .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 thr 7sm16s(i bs:r:jzyq iyp,d2 mough a potential difference of 500 V. What is the velocity of the ele1 dmyz2,mji qiys6s7s :rpb:(ctron 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 tpir +lq38gu bz:f2/ hgb+9mmm hrough a pot/gg8rz mi:m++2bfbphmu93 lq ential difference, 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 maintains the electrical unh1z4/ 3z:frv6brg ppotential difference between two parallel metal plates separated by g64:pb unr3v /z1h fzr1.0 mm. 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 field, with a magnitude of 500 V/m, is directed pa2or yu u84m 1cu9hcwy/rallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what y8uuw4hy 21/ou 9c rmcis 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(x12rxpjdq*e4pl,j /w4 x vdh/C directed toward the east. If the voltage meadxlpx/wj* ,41 ev jq2xdhp4 (rsured 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 directi ggdk 9;bw1u:ftxux,/p(x 1oa on of an electric field of magnitude 3.0 V/m./u,ox1 :btx1waxgpuk9d ( ;fg What 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, se2:,r6l aqsslm parated 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 plate. When the electron arrives at a distance 1.50 m from the positive plate, what is the potesq:2la r6,m lsntial 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. An q/w3n 9abz)jzelectron 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, how much kinetic enerqnj/9aw3 z)z bgy 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, separac5*0cq c1ma- :lk vjcmted by 0.20 m, are connected to a 12-V battery. An electronk *cmc 1cqmacj0-l5v: 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 of 50 N/C directev klb ,j(7a.zyd toward the east. If the voltage measured relative to gro 7 l,kbyav.jz(und 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/C directed toward the east48)(apwmm dzo . 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 directly south of that pozm(8) pdawom 4int?

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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 wfex20zino( hljqhq06 d:4 , nfill acquire a kinetic ener2l n0df6 qxehf o(:inj0,zqh4gy (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 potentiawi;h55m f my wg3w.(rxl 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 stick. Find t60 wk:ow6clwkv4ds51)s r(.gbqjrm ghe electrical potential for the center of the metekjo c1r)k65sw v:lmgrdw q0wg.(s 4b6 r 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 p)x. v,tbdz3;i v5nvtpotevz5xt t; .pbi3d) n,vvntial is taken to 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 atgx37ll a/x5 i o7rb8yn (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 electric potentia7lxyo xr b38nli/a g75l 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 thxhwav,06c6d;c 0zj ike potential is taken to be zero at infinity, what is the work required to cw,akc66z v;0 0xj ihdbring 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 a rea4mj),1onol)c ow-qd ctangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, and b =j, -maw4 n)o co1o)ldq 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 8am y0tzep)9v0 qnh as)0ir2pmC 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 prnmt y09ieqasph002 )a8z)pvotential 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 (ch,lb(fbfn6z6mq81z j parge +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 necessary7da av 6-jb slhp,vc+38xrs)l to place three charges, each of 2.0 mC, at the corners of an equilateral tr vhl 8l3ac7as-p+bsr dj)v6x,iangle 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 a 2.0-mF capacitor when it isnxpw rkrfqc3 *ncgr,,: nhjoe66w ;:1 charged to 1006ke 6*wp 3rn g;q,ncj w:,:1c rnrxhof V?

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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 arehrg1o-2cj*.t yrjx ;l a $0.50 \; m^{2}$ 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 . lo0, zwnh2cbgnoe;1sci;y .are separated by 0.050 mm. If tn so01b.o e n lcy.gih,c;w;z2he 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 area5*sycstzi-z+k2v 7 d f $0.20 \; m^{2}$ 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 nhy(c17 ao 9 axo6.ppdv -q:lsa plate separation of 5.0 cm. If the potential difference beta scpo69l-:(nqy.doha7 1vxpween the plates is 2000 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 connected across a 100-V battery. After thetovmiy3c- cf)(n-ht7 h h39a j battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, wtoc m3hhhjt9i3 )y-nca-v( f7hich 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 oe sd 3r hujkkor)1m//w:t:enf(v an+;n a 15 mF capacitor. How much energy is stored in the capacsnj re);/+h u/ n: wfvrdmetk1(ao3k :itor?

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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 tni-r6*g5. rlxuohv flf6 h7ii(c(pd :he energy stored in the capacitoix6i( 75*l.uovhc 6l :d rg(fpi-hfr nr?

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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 fd2u0vg+ 9 yz7re1mhd -l;hqq bvfsoel.3i+ :clows onto the plates of a capacitor when it is connected to a 12.0-V batte dq+2r3il.:q;el7g 1h d9c0e+hmf-zubv yovs ry. 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 ro d1+/2od7jx4kw avwis charged 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 a yqa*8r/gxcnkl7r 2+fu x ,i.j zzt28area $1.5 \times 10^{-4} \; m^{2}$ 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 consis+k*qvdu0 n lz9ts 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 ozzpne/a37 zb 7w+z hj2f 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 plate area of yi/cio1b 7( ufg(6qlz $0.40 \; m^{2}$ 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 platejyo +n mztwe8qk5 2uhor8)49 r 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 batteryb)m:3jlqlyi6zm-4m,9i t/v +y tydth and becomes fully charged. The bhd6ymt+) -:/z lq3mv t iyj9yblm,i4tattery 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 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 bebi+r2h(awq +osvf mo 4b9p5,r comes fully charged. The batteryf o2 wh4+ibr+b pqom,r59avs ( 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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本习题练习题目来源于51fly国际课程 (https://51fly.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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