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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 isks8-l yi:6 gpr6hc 9mkrprl 5qkq o2;4 not 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 is a2qw79m zdj u88ulh ll:

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two identical aluminum objegsg3 :7 t1emwocts are insulated from their surroundings. Object A has a net charge of 1gs:w3t 7g oemexcess 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 in the direction of the elec( )h8z xxxzn.3wpj6pghppn qw2-6 )bktric 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 tbhi kube- x0kw, -.x(lo 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 sphiir3 duo77ij s7urttv :- 30vxhe1fj+i+v3u mere. 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 r8;y l rg 1l3bbns+ayfhv*qet,o;43iw est to a speed v by a 500 V potential difference. If the potential differelv83hbq r, 4ins 31wy oe;fy bt;lg*+ance 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 s+rfh-dlyxwt g/bwd 9)j,7 y1potential 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 f. i ; rd8trr94efq;mrmxj(ju 3rom point A to point B along an equipotential surface (r8u9mtr4 j3;m.;rqxdjr eif .

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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 be+m0s wvtq 1q2b

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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 if n.b28kttve9t bhb3m lm62 3 y7wee:a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of bvhm2fnet btb6 3ike8:e l9my.7wt23 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 uni c33 *)l s32hs(zuiyttg6ito pt 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 tohw yi 11kh2pl9p9 jzk0

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potentig ejui(*ve::zdroce + g6+ bo3al at a distance of 2.0 m from a positive point charge is 100 V. What is the absolute poteb zvi3 (o :eecr*:j6e+gdguo +ntial 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 azz4d0 *83 /elmoyij pbt a distance of 2.0 m from a negative point charge is -100 V. Wm l0*i/4pzode yjz 38bhat 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 m9uewuq-.e a+at the exact center of a square is 3.0 V when a charge of +Q is located at one of the a.um +-u9 qweesquare'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 is 3.0 V when a charge of +sh8ro 83d5 it8mz 6uoxQ is located at one of the square's corners. What is the absolute potential atomxsozr68d8853 uhit 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 bob+u f96s,aufv wau ; y f8h6k0vw66nof 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 .tqus ,+n+t 7 x7zs6amw6xj oois 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 respei0qs y- q4iw(rfwq8ka,.ok c6ct except that one has twice the plate area of the other. If the smoaiyk(rfw-q wc, s qiq04 k8.6aller 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 capacitance1o8xhknxw.jy,*rb 8 d of C. If the area of the plates is doubled and t8xy*8 kjorb,.x 1ndhwhe 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 remov26cac 8p sstsw3ui1 9yed. The plates are immediately pulled apart. (With the battery disconnected, the amountci12ptu 9ss83saw 6cy 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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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 weak6l -rhho+ qqz15g9c wxened, the capacitance of thatw -r c5hogh+ qlz1x69q 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 au2ue kpqvy5y;)noqcx 18z; u /re maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the pyux;n qo5k) u2/zq8pucey 1 v;lates 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-gsusj7w w*h 6e0 jjlasvcd/i; nr:;63 plate capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the stre/ lshc*ws6j0wu7e3:;vjdai; nsj r g6 ngth 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 between /wr1qdin bc 2,cp9s ykl0h- f6the plates of a capa2h w6f0,crncbsyiqp 9l1-/kd citor.
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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 placed between the7 9l *tphfxtt6 plates of a capacitor. 9ftt*tl hp76xWhat happens 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 placed between the plates of a capacitoog774asqlj rfhw hf6 z.5 2rqaz*z).or holding a fixed charge. Wh2 jfzroz zg4 .hahq q76*5.7rsflaw)oat 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 battery and becomes fully chargedru+.2ob u6snm . The capacitor is then disconnected, and the separation between the plates is increased i6un2 b+m.or usn 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 bznaup:ms .7:yii* cy y.k,t9 of a capacitor holding a constant charge causes the energy stored in that caukyt,isc :. 9i7ayzn bm y:.p*pacitor 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 sto fk7exwbde0uxb: ndbodg 5k)+ x ,(/y8red in that capacitor to7b e kb)d(k yde8x:xbgd0w/5 fx uno,+

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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 chz qwz*vew01 g9arge from point A to point B. What is the potential difference between points A a09gewzw*zq1 vnd 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 the potenbbcd8*pi x np++g8 c)ytial is -50 V, to pnp8gx+ i+*)c 8bbyc dpoint 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 through an electric jog6.pt0iq 2+czfk :qhdgw .(potential differekj:gcq06 ztgid.+pw . (2 fhoqnce of 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 accelerated through an elect m(p8cgjv1qkdhdl /-)ric potential difference of 500 V. Wdlj(v1mq )8c-hdp gk /hat 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 potential difference of 1200 V. Whh6*0s4 s sg1ikmtbd8 bat speed does it acquirekgm6s1bis4tb8hs *d 0?

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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 9.0al4rf. d3klt(ptzk. k -:nrx3 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 through t fk4n9s:id e 5r.d ik33wewy4a potential difference of 500 V. What is the ve3n f .9ki5swt: 4ye3wid4erkdlocity 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 bty/ zi/p rf44.+d qxwfrom rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude /4 rf/tpd xzyib4+w. qof 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 elgq asd8i+dja, v ,mh6:g: g+kuectrical potential difference between two parallel metal pjigd6s+a 8m ,a uq:gk ,gdvh+:lates separated by 1.0 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 ofc;)p5pymn1om6d8 4i twb7qhg 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at xgnybq5pcmtiw8o4d 6p7 )m 1;h = 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 easx;wrvep 1vzd5h :(ow1 t. If the voltage measured relative to ground at a given point is 80 V, what is the voltage atdww:opz( 1;v5hexvr 1 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 l /krz27yy s9,hd :zfsalong the direction of an electric field of magnitude 3.0 V/m. What isdf/9k l:s 7sr2zhzyy , 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, separwvfoj;69*e q(8cdx luja3 7c(n0ir rgated 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 eliof *wc8d unqvlj ;(e(j79xa 3r0c6grectron 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, sep26naqj q0n+ e c:v .;mqwf dop:tnan34arated 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 distanc;6.f4dqv2m+nn : o 3a wj0qceptna:qne 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 connecte8sp v.u3w0 tvzd 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 0.050 m from the positive plate, what is the speed of ts0uv. p8 vzwt3he 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 dir,8xd( -xqy vh z8ps;uqected toward the east. If the voltage measured relative to ground at a given point in the field ixh,8v; z pq-8dxuqys(s 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 east. If thehqxz3.mmts* -iq 1 yv- voltage measured relative to ground at a given point in thymq vm*ht- -xz .iqs13e 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 of 12 V, it will ) djbe6cu )r znawn895acquire a kinetic energy 8ej))n6cb arun59zd w(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 potentia a1j4(gt g:ezsl 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 the elecilwkl xjc1)xjr. .u+*ii7dv, trical potential for dx lj. )rkiwv+ cx,*.l1jiiu7 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 5mji 3.okb( gu-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 at po (g joik.bmu35int (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 charge is at (3;wt*gn gihpax/h 5 +0n.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 at point (0, 5p0*ntxhigahg wn ;+/ 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-nzn9uhnkop19 a 5gvm-: C charge is at (3.0 m, 0). If the potential5m- ap:zh o k9un9ng1v is taken 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 the corners of a rectangle of s7ap jwf4nqg) a3t.ym ;ides a and b. What is the potential at the center of the rectangle if q w3 aq.pyngmaj 47ft); = 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. Char4ikp c6a vth/)bscl;5ges 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/sbt4)l6a;pi vk5ch C. 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 +-or6shoq (9ip n,g id*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 coxifgi7ao6d9/ rners of an equilateral triangle of side 2.0 x6f9 /7gaiiodcm?

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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 is charged tt kj:1k7r7 oafo 100 a rkto7:f1jk7 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 z;;gy ho9l ebjr4f nhl-*/6n jof 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 pla*wzk:ld 3lt6k7su rkz3x/ ie.tes are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the pl z:lwt3kl 7r xeki 3d.6z/uk*sate 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 h +dh0d/dfta sgyf1nafb6fza+81v31trvij 4 . as 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. If tez; ex21ziexb0- ma im.;rqv8d he81ehe potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between t -qeex ei81i8zxmav1e;;2e r0mbzhd .he 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 batter 8ynf0lu-s2k es 1bv/ay. 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 cbev0kyf 82-ls 1sua n/onnected 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 ;l8 9 og0k1uca7z+kpie ,cdrhcapacitor. How much energy is stored in the capaig ckk0zod1 9u;e78c,ra pl+hcitor?

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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 capabr3 m7b7x qa.buw;-d kcitor. What is the energy stored in the capacit7qurm7bax - bd3bkw;. or?

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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 capa6+ d( w6zrqx dw/fg9gvcitor when it is connected to a 12.0-V battery. 6r /gdq dgfvx+ww (9z6 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 is charged sm2srk*d;l v4mnye8*b 6 a,hjco 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 coaee bgyf 21yi*j+9n/63qu iw:kt)qsqnsists 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 consist fkwo5s**7c tis 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 cplcr 4(bm3yor4u)buwa e m2i8ph4i00onsists 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 iiwu p *)to93q5ro /g gmzu8ihs 9ii62ds constructed 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 constructed with plate aruvs1l 73 ds pk3r 0ruofa+ja2-ea 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 fully charged. 0 aac c(g9mf2zkta0i(The ba0tm2c c9fiag akz0 ((attery 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 batteryn2-5a8rkd(9a cjzt qb and becomes fully charged. The 2qt(nr z5d8kab jac -9battery 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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