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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 ij-7ps5-hxgx zp: n g1as 78wmis 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 q +jfsp*e b:q2v54cjga

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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 thc(yqq ntq4p t-1r8sgtzyv3 * 9eir surroundings. Object A has a net charge of excess electroncqqpvsny98 41gtrt3ty *z q(- s. 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 yg+ottd th9yoxi9/ -.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 the electric qo,f9dbv 0w1-bgngt5 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 s-7e5e l2pj gvsphere. 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 0zwy64 n/f*j3lwzsqdaccelerated from rest to a speed v by a 500 V potential difference. If the potential diffen j slwwd4z6fy/z0*3qrence 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 the0x w52+ ptb/p rzb mr+;niqzo2 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 tow5k*ibqe ,wi( point B along an equipotential surface(*ie5wkbi w,q.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface ;z lm oz53kns9must 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 eqn 3 7:1w 6jlf7qc6cutduzre/zl 3ujv- ual to that on the electron as 77jt 6v33 du6:ujrln c-euz wczlq1f/a 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 unitd: vj+/smq, r4x i3grp 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 correspondy*+m6z;j oai ls 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 *x-jvf(33/vpr cm) g g*3gu4x scpns hm from a positive point charge is 100 V. What is the absolute potential 4.0 m au /xps3vm43j 3p*g *hrf cvnsc xg(-)gway 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 negazon. cv/hw 3l5tive point charge is -100 V.wzo/l 5vnc 3.h 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 square is 3.0 V whx hg/+adbq64h 9lzo7yen 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 filledgq/a9hh4x +y z bod6l7 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 c)ahi o qb4u9t.enter 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 centehi4aq 9tb.ou)r 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 tw/utxaq 1vyx0v0ph l 2*o 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 -y-q /dmlavyiews8) /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 respect 6zqa1 )tk,um1u of42 yps) uhyexcept that one has twice ttqkh ))1u1 4yasmof2uy pz,6 uhe plate 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 cap 9n 8jinbe7q;ci(3ywnacitor has a capacitance of C. If the area of the plates is doubled and the dis9weicqnb 738n;(iy njtance 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 parall1n8p(2q+z e ag t+ncalel-plate capacitor 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 difgalnqn ta ++e8( pzc12ference 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 weaku2ggp g-l 2m:9xavnpdv8a( 7qened, the capacitance of that capag (gp 9v2xgd-au ma8np7:v2lqcitor

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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 c(a/tq,dqe ss( apacitor are maintained with constant voltage by a battss((e/ q, aqdtery as they 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 constant volt5swy*p)9-t8htvt l h cage by a tyw5)s-8chv9ht *lt pbattery as they are pulled 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 dielemx0* d64h cfu5(yxtn nctric material between the plates of a capact ( 0*nhun xm4dx5fy6citor.
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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 azvr 3/5 tt2uzx*rj;smpfw-pokl 2ytws,.+6 ys paper is placed between the plates of a capacitor. W5+z vt l6 .z 2,wutpf roxs;k3m sjywyt-2/*rphat 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 capacitorot k3:6uj ug kb2;xa/ blyx146jzfva2 holding a fixed charge. What happens to the electric field b6gb zykbj;3fj au a:kvxt x1l62/o 2u4etween 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 capacib7/ pykf0hl0 f+ lvmj+tor is connected to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the pl l 00p+lvff/k+ 7ymhbjates 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 capaci jst)l l(09nm1udxg f3tor holding a constant charge causes the energy stored in that capacitor tg sj39n f txu)mll(d10o

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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:v*o wll-)b-o ds1dyh red in that capawdlvoylh )-do: *-1 sbcitor 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.3 *05qq jevpl xfi39i;fb*xmd What is the potential difference between points Aim3qf5 xf ;i*9*q3 0ev pbdjlx 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 the potentiacfv41st9tzg9 wv:0mx l is -50 V, to point B, where t94wm vv xscft09:t1gz he 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 elr8 wo-bjgb:fah18 c( 0z4bsfk ectric potential difference of 500 V. What is the kinetic energy ofaw-8 sb :ghrbj84b0ff(oc1 zk 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 acci rww*n hin88)elerated through an electric potential difference of 500 V. What is th rn88nw)ii*hw e 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 thro5rae *wnol6i8ugh a potential difference of 1200 V. What speed does it awi6l*e8no5 ar cquire?

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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 yaog7: d13ft ein 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 accelerat:o y3djeyrc9 5 y.9hhfed through a potential difference of 500 V. What is:o5fcjehyy. h9y9 d 3r 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 from reskkcm tz76rzg0hbku0q rsm)b1 (x /)q3t through a potential diff)7 0msxq(zbk)0gutrbmqr3z khc/ k1 6 erence, 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 potential difference betloj1c2 8jmic3hq6 u;k4e z3vf ween two parallel metal p4uik3zm8;1q v6f2jl3h ecoj c 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 of 500 V/m, is directed papnnq(7 0wua .b xlln;r3x :8kurallel to the +x axis. If the potential at x = 5.0 m isa780.n xkul3nr(;unx bpw lq: 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 1,pn.jm-k3 re 7kvbxb9hmtnxugd: :( /C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the votedr b1n m( p:g7 3mxub:n, vxk9.hj-kltage 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 elecep l e xf3*.px)wvb6)yuy/c,ztric field of magnitude 3.0 V/m. What is the change in kinetic energy ofe,pyzc/l) e3. fpy6*)vbxx wu 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 pvsrjyc518d.7nne+jq qu3 -mby 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 potential difference between the initial and ur. j5y ndsj q-+7 e13cnmvpq8final 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 co2c/ m 60zqk hrw.7sfstnnected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electws2q mc.k0zr 7/ 6fhtsron 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 connected to a 12-V batterlyc*7e xu id-5/pm y0yy. An electroe c5yy-luymxd 07* i/pn 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 directed p*lb *f5g /jy3yxqy/otoward 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 directly east 5*qb/xy3ygflyj* /po 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 diry+s1k. elk a/kected toward the east. If the voltage measured relative to groal k/yk.se 1+kund at a given point in the 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 9k4wdz:ih g usg43g*duvat79 V, it will acquire a kinetg9did vguk tu9h 3zag*:74ws4 ic 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 distancjtun 7;2vy+ ilacp 6x2e 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. Fiq1eycr0 ;*en wnd the electrical potential for the center of the mete n yecw1;qe0*rr 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)5irk)ff:znjoj4 +5oo 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 poten 55njr+fojf: o)o4zki tial 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 -2.0-nC1zocr**o9bq 4lv5 gyl charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the eleyg15 rob zl*9vo 4l*cqctric 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 charge is l4 ovjdaoiy2(9x;pf 1 aejx-3 at (3.0 m, 0). If the potential is taken to be zero at infinity, what iso1j9pjxf i2 o4dy-( avxl;3ea 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 hd4dym j( *u;/q9fbqithe corners of a rectangle of sides a ahub49 ; q qiddy(*/fmjnd b. What is the potential 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. Charges of +4.0 mC are placed in two diagonal h,ovavt w 1r7gs))w3 kid6h6jp qo77nly opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What isq6g7 3,1v poak7ow7))v dhwt nhirj6s 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 (chargea1q)ei hy5a6 pa9iauqf+dm bt*/r 6z+ +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, an8c fl3a74tr(lm( rs)el x4j each of 2.0 mC, at the corners of an equilateral triangle of r3fna)(a ce4m l8rx7(ls l4 jtside 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-mck4ej hpk-rmw** o- -jF capacitor when it is charged to 100 e4-jrhco -*jm-pkwk* 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 aw(mhlz h b61b, wj16xxrea $0.50 \; m^{2}$ 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 f)9f kiz :co;mu5kb jw/illed with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate w )/fu:kzkj;mico95barea?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitorie3x*y :lqqo* v+ur7j 3wo5vm 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 has a plate separation of 5.0 cm. ; (5 (cxku(rtoyqew2x If the potential difference between txyq;(cuwt5r2e ox (( khe 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. Aft-dbjymt1si/* cyg 8y;cus-.d j07cq o er 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 connectyj0sm;bi /sygd cc1 u8ycjod-q*.7-t ed 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 muiix6 8s;qlcae8 9pqx l706gwF capacitor. How much energy is stored in tepw;8l6 0xal qisc7 8ug i96xqhe capacitor?

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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 ,vc(+w3pul xczm4wj ) energy stored in the capacitor )+lj3wuc xvw4cz,mp( ?

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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 capac 38 z/zxus2d11hrueo0omhu3 vitor when it is connected to a 12.0-V battery. How much work was done in charging thi8hexs0u121zoz /vu 3 rmho3 dus 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 that it stsy: runfsfob 7; 8,tkxw5v i7/ores $2.0 \times 10^{-3} \; J$ 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:bij+kd/a-8s ni 3 6w citeo2b 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 consists of pwwza )uj91 uue. kw- 8vu8i2rclates 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 cng+p -xigu *x9onsists 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 capaik39nrlt 9bt-citor is 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 constructe-jy-kst uafl n1, 5+1cjhw*hcd 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 f pkrc;+ y7-s++lpq1k)c7gg vn yszi-gully 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 capacitance of the capacitor after th)gg7yvls+s 7y-pg+qp k1ccr; inz -k+e 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 conne oi)1wmmd2e7v*d7fw8el )kc fcted 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 dielectric has a dielectric constante7v d2 focdi))mwm* 7 1elkwf8 of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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