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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 vectg; ldl471 (ukfbd2; xwbsrra2or?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulomban5 dt7u)x1e8mzxy4 2: v rwbo 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 the49vt syokw 4.-jx p5pvir surroundings. Object A has a net charge of excess electrons. Object B is grt sy jvp xv-9p.ko445wounded. 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 th-s0;ox j / blxiu7v/qde 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 rcgir3s( sns/lnud ;56 j0s)othe 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 dnvb *-sf ql,63k ckp*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 p w9-/xi.m .j)ycrv +mu5y vidmotential difference. If the potentiajvwumydr+.9) c /5 m-. myiivxl difference 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 a+*av0qmc+nwa b sea).:mz*umt 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 equipotentialic 2. 7j.noulq surfacjl7uci2 .n q.oe.

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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 beb0 sp +mc-d.qf

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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 t7 patt4dm-r-so that on the electron as a result of moving t-tmr- a7s4p dthrough 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 unit /bqqs- )knn). yzlpk,;ku*m3uui vg8 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 corre:a.d8 o ypcdrke(0 iz*sponds 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 2.0v642x/y.cac6 :gsjhm3 llz xy m from a positive point charge is 100 V. What is the absolute potential3xg66lysa /jc.y42cxlhm: vz 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 dkrb-.4ycwdpr xs 93wo )pnc,c o2m,p)istance of 2.0 m from a negative point charge is -100 Vwoo-4 s)bp,r9.nc) c,p ckd xmwyr3p2. What 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 center of a squarow:w4ma p;2/* cjjjok e 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 char kawpc*2w;/ j4 ojj:omge 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 th0y2ablxd:88um bg n u+e center of a square is 3.0 V when a charge of +Q is located at one of the squar2yxud+0l8 ng8uab: m be'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 charge5;x )h3s x yiwqwa)ho1s 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 tbg3al6fga-jkg 0.p7 d, mn9oa

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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 respe;p;2fio9ogk 2 yd-iie ct except that one has twice the plate area of the other2- go9oiey;pidfi;2 k. 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 hape m to2/g yj90+m+gdw6kki5as a capacitance of C. If the area of the plates is doubled and the dip+kg etj/ 652a o9ydmmwi g0+kstance 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 is5 b7sln6 5rkfw removed. The plates are immediately pulled apart. (With the battery disconnecte5f 57 kwrblsn6d, 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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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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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric field saek* tfwn0-l pgea1r17lvq)*2jg)t between the plates of a given capacitor is weakened, the capacitance of that capacitorta*r1algtqw 2jfs7le ne0 p-k1*g )v)

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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 capacit u/ b;u+o9amt(:j kdznor are maintained with constant voltage by a bt/;:nbo(zk+md9 uauj attery as they are pulled apart. During this process, the amount of charge on the plates must

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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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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The plates of a parallel-plate capach*2q,m7 -ixrhl/ zsj aitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field duri/7h lr sah-q,*2 mxzjing 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 2sz+k*miii1j material between the plates of a capaci 1kj zsi+2m*iitor.
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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 asw +rhgz fesn-8ol8xn-l fj/70 paper is placed between the plates of a capacitor. What happens to nfhljwgx8-z7fn -o08r+ l/s ethe 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 plates1/wbh13ugtzf s xg-)x of a capacitor holding a fixed charge. What happens to the electric field between the plates?3) /h-g1xz1wg tsxubf

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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 and becomes fully charged. ( f9t ggvfc2hcx/4ei5 T/ff(cx2 ghc4g59 tev ihe 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 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 constant chargp3cnpu. 0 aur ndv9;j7e causes the energy storedap 9un rnpd7 ;0j.vc3u 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 t gs.bzp5d -b .ss ,p;i8o)vumzhe energy stored in that capad i 5.gmpso) u-.;spb8bz,svzcitor 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 B. Whf*)te(lj5f* j/w 5h yycgws.t at is the potential difference g e*)fwjyyttwsc.5j (lfh*/5 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 point A, where t1 rzdlvb b9em2r0z 5e3.k2oj a0/lewrhe potential is -50 V, to point B, where the potential is +50 V, i.2021rzl mb3kv5 zb ejw ereor/ld90as

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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)e t2k(wnj *nx potential difference oj ex*(kntn 2w)f 500 V. 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 /jv+2z;tklq jg7 5vzmaccelerated through an electric potential difference of 500 V. What is the speztqv jml;+5 g z2/k7jved 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 potential difference of s8pw v(gx*1fzi4b5t+ig .be b( pjrx p e(c6;u1200 V. What speei4pp5ctbb6s8 jwe bx *pf.xi;1r u(z((vgg+ed 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 9.0 V do in movi4-/4p :tnfg9h im(y+lhcm u byng $8.5 \times 10^{18} \; electrons$?

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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 acceler) :idw3 wbgjca -a,z3dated through a potential difference of 500 V. What is the velocity of the electron afzbaaiw:gc,ddw -j)3 3 terward?

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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 chargy1 g(bl/cb0hd e of 20 mC. The object is accelerated from rest through a pbgbc0d yh l/(1otential 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 potenti6i v0 :n0c msdhhdsy61al difference between two parallel metal plates separated by 1.0 mm. What is the electric field betweeihvhd cs:s0y06 md61nn 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,e-.3 sq mufhx8 is directed parallel to txmhe-q3 usf.8he +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 electric field of 50 N/C directed toward ,cfnwn5a qv59d.hxhaj/e*0 fthe east. If the voltage measured relative to ground at a ghhfjnn, wxev5 f /.ac90d*qa5iven 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 fiel1beetd9tel muk0:,e l3w. n 0wd of magnitude 3.0 V/m. ndkmelete0: uwet9,3 lw0 b.1 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, separated by 0.20 m, are connected to a 124-iz3 u90d cqut476fbstaujr -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 potet i acf9uqj40-s6b uudr347ztntial 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 co0 qd5wuf os;i6nnected 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 dius 0f5; wid6qostance 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 connected to a 12-V battery. An)9w o zgn/d4qh electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at n9/hqdzo )wg4 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 electri.vm rp;x9)b zvc 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 t;9vb p vx)mrz.he 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 eastju5 cl +y6+ i2cbk6nme. 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 mjlu 2cn+ek5cm66i y+b 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 ggkz31wm,6 z0oy rv+h ;jbiz/through a potential difference of 12 V, it will acquire a kingz viw,jo;0hzy /br16gmzk 3+etic energy (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 diston5ybuh /v9tf-hf ((z6 lcvu7 ance 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 electric3 va.hbdm8pr52q o0bbilo i .)al potential for thebqbo.lb35 8mp0oi )rh .i vad2 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 ponhotv (/ j)s;ptential is taken to be zero at infinity, what is the electric potential at point (0, 4.0 ) vo(s/;jhtpn 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 charge is at (3.0 m, 0). r)m2kdvs+th sl67k0i If the potential is taken to be zero at t)im s+0srkh 6v 2l7dkinfinity, what is the electric 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 (0, 0) and a -2.0-nC c mp,,sh 1s(tp; x6shbeharge is at (3.0 m, 0). If the potential is takbts ,6x ,pph1 ;s(meshen to be zero at 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 +q are placed at p-af-kpwl-bx k40 9c dthe 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 = 3.0 c4kp0--f-kx pabcld9 w m, 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. Chargeb g:xc(q. em 1sva:tjf-amc4 7uap, 3qs 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 in the square's-3ec1aj4 :faqs mmv,apbgctxu 7( :q. 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 (cka2 tu;u7af *hharge +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 three charges, each of 2.0 mC, at the co7hql1 / eejp6u bs4vh/rners of an equilateral triangle of side 2.0 cv/ 4b 1eq je/l6suh7phm?

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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 pl9(xq v ahq4i s)ig//cfates of a 2.0-mF capacitor when it is charged to 10i/s49hgq xvaqf)/(ic0 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 capac+jz ); fxictg)jhgy8 o7a.hq,itor 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 fin0ugggj* z77s lled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate area0 g7u*sjz7gn g?

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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 x3 6j-wl//jqdik-qv d 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 cm. I7o 7 y00 yvh0epqv:fagf the potential difference between the plates is 2000 V, with the top plate at the higher pot oyv:h0pv g0 y07q7eafential, 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 a( 8j bvf/: 2n-kogassqvz(g0 across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dieazj(v/nqkg o2g :8ab0s -s(vf lectric 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 1 o- :urncym(,bxd.u rmF capacitor. How much energy is stored in the capaci u(, bo.urcy:mx- n1rdtor?

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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 enelmte9;t,h z2 .cz7 vyfrgy stored in the capac2zl7f.9m h eyzt,tv ;citor?

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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 capacitor whw29a yqbc6gq 1en it is connected to a 12.0-V battery. How much work was b w61ayqcq9g2 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 *j9m7egvvm vp87: ew kad-yp0is 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 coj 7ogal87pfuu4;+*tfz-xnya nsists 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 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 b4j kw*wpctc9u(5/usw 3lw ;sconsists 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 conf))adlx7)+sfq1zoky: t. kscsists 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 plate area ofg 4lznbd bflyu);6;hdr;)8x f $0.40 \; m^{2}$ 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 cap wy3c /ls2jg-kacitor is 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 connectvn m4 4i+5sfdga qbe-.ed 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 the dielectr4a4+vnmb5esf q- d g.iic 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 connecasnc 99 tbqwk4k)9dw /ted to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fillk )ad9b4/s q ntk9w9cws 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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