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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 io4(d bjm* nxi(c+p,mbs 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 aptk r1 c0ap)ug08w gq.

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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 their surroundings. Object A ; 5gvt;l5l*;wahy(f qc frp1/o g1 qaihas a net charge of f; l a1h 1*trvc( aqlp;qf/;yg5owig5 excess 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 elecz-gai7(pow t.tric 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 directio6(i jkpo2pn 1zn 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 h9*xh: q crk3li2 c j3 cuc+n9:eqy8gflollow 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 wl udm59i+3 wyyd)p+ dV potential difference. If the potential differeid ly9dwy53u)p+ +wdm nce 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 ra4imz p*) dffa83e2cthe 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 fxcf / u)mxny4 8dvwr;3rom point A to point B along an equipotential surface rd8u;v3ynmw4) fc /xx.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential sursi3 l0qqodg: 4face must 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 particlstmpm67djn o0/.mclk ngvsuq -/+.0 re carrying a charge equal to that on the electron as a result of moving somc. mv-/nmd k0u +nl7rqpt. j/s0 g6through 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 ismqe*v( g7)m ov 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 correspoc6l: 5ppn o.ahg.l qn2nds 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 positivl(w tjlef mjs0;u*f34 ci16bu ;9uf ywe point charge is 100 V. What is the absolute potential 4.0 m a3lm4 ; ffu0(*biyj swu6ewjt91l u;c fway 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 negative point charge i;9zjp3lond5l+yl ) rhcv.4ats -100 V. What is thev5z;yj4ao3 nth l9l p+ld)cr . 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 th0m )xou wtm9l/e exact center of a square is 3.0 V when a charge of +Q is lx9ou0wm )lm/tocated 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 ph f 0oj d98bpj5ch+v6the center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the abfbdc vp86h5hj 9op +0jsolute 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 charges thz)k) tv(av69az ,v-zs7qfqu lat 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; i tq2,nlk:x4 ucy4z8w,i g7icnxbt i. --zro 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 ared09xv: e ag qamk*6ey /eqmkqb3z)4.y identical in every respect except that one has twice the plate area of the other. If the smaller )eqqx*/kmeyq g.ez kb946vya3am d0 :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 l(:wr c4pycux 2cf 3hf75-:g +ktxxoq capacitance of C. If the area of the plates is doubled and the distance betw -ux:7l 2gpkoyqcxw(+f4hxcr35 ftc:een 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 remove* eu eraycs*b* 0v:hkp32w cg5d. The plates are immediately pullewcbs*e5rpe h:g*0 v3*2yuc akd apart. (With the battery disconnected, 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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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric field bel/b*c9)sg gzuq-qtqgrr/l4, tween the plates of a given capacitor is weakened, the capacitance of that capacitor,-bqrrtu/g* /g clq)z lq 94sg

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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 paral2k6t(; rv dzh-:; ccgmbdnru8lel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this pror(nhg8u;ct-d2zbkmd r c:6v;cess, 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 capacitswv rg1sa5j c*b4 1dt,or are maintained with constant voltage by a battery as they 15s v4bs*rgjt 1da,cw 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 dielectric material between the platg/ t dce*zx6e5es of a capacizge e5td/c* x6tor.
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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 the platy 5cl*-8wedrtes of a capacitor. What happewl8dec* yr-t 5ns 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 jj1i+3fjp -r:jlrledl :( kh* such as paper is placed between the plates of a capacitor holding a fixed charge. What happens to the electric field between the platkfrl-jip :jh3 *1rj ljl:(de+es?

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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 bsaw14br6gtiv8 gtxel0 a,- 76r u*ikaecomes fully charged. The capacitor is then disconnected, and the separation between the plates is increase6a8 tiieg7a la-rsgr16, w*t0xuvbk4d 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.)y sas5cd 19b;5 xpime q8mcb constant charge causes the energy stored in thyx5qcp; sm1b.ecisd m b8a9)5 at 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 caqkt3 *q83 yc62twd 8l15shhxkx nb+touses the energy stored in that capakwhqlno3kdst5xtt* y1 6b2cx8 3q h+8citor 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 p6t.o s, cf9jpooint B. What is th tc6o.fos,pj9 e 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 an elec9ltjzsim0y7: pku e*uwb)o+ (qxi q;*tron from point A, where the potential is -50 V, to point B, where the potential is +l ;*tkm qbq)euo 9(0u7 isi+xyzp:wj *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 res20k0oydh cnit+t(5wd* kfnu* t, is accelerated through an electric potential differenc*t0ic+n(2doh w05 tykkfun* de 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 electric potential dif17rp8v clh9kuan gv11ference of 500 V. What is the speed of thevpc891 v auk gl1r1hn7 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 potelz e/*;v 7),3 igquvbkf cis wh 4)/kg9ne;vvsntial difference of 1200 V. What speed doesve g;7hgvq9b,3kf4ew k)ic l vi)n*v;z /s/us 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 do5uk x:axt- d0 h;xrkx( 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 a potential d j9 xbxr vf9g3d0k spvjp1y)rc+6,ob* ifference of 500 V. What is the ve+bpdo*1 b 0jr,39x6s9vy cpv g)jfrxklocity 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 accelep,q0ov1 6uzh erated from rest through a potential difference, and afterward thu,01o z6 pevhqe 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 the4fd 8;dtw dx igybnwva6b86,4d+ d9jq electrical potential difference between two parallel metal plates separated by 1.0t6v dn4d 4w8 +d,ibb9g6;yxaf8 dqd wj 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 7ec7r;e 3wmye, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential a7r37eyw;c em et 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 volpu54r ttpam ide;q;7u7 pg:g3u sm.w5tage measured re73q75mprtpg gu;pa.td5u mise w 4 ;u:lative 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 direction of a9q b fv5ajx8g,3xwptwd3 v.8tn electric field of magnitude 3.0 V/m. What is the change in kinetic energy of thexv t.8td,w 3wfp5x 9bjv38agq 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 to3v r-g dez8q)x 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 x -e38zqd )grvthe 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,ht,vf ft0u8cl*y 5my1 jxo/ i, separated by 0.20 m, are connected to a 12-V battery. An electron r,y*c0/t 5 mutji, ylvohx 8ff1eleased 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 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 diu)+ck8sv ytb ;o +8yvey(4f12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a d8(t vic4;o evdy) +y+sbkyf8 uistance 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 eleck85bb*;ag u z/a8zpbc tric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point inb5zaz/gpu a88* bb k;c 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 east. If6g ys3 74lo,wewh.lnm the voltage measured relative to ground at a given point in the field is 8m3l7g6w, 4we.lynosh 0 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 potentialue/l c7o) c9u5wgim*i difference of 12 V, it will acquire a kinetic energy (in the absence of fricti9eo m7uc u)wl*5/cii gon) 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 potentiab +y el6 2adi 6dljx6tzpg;8e/l 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. Finfparwhf*p 3+ax3 t83c d the electrical potentialph p3ffx3c*a8wrta3+ for 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 charger12rrowk8 pt4 is at (3.0 m, 0). If the potenrto 24wpk81 rrtial 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 at (0, 0) and a -2.0-nC charge isiuv( 9p oe,,9ywqywo 5 at (3.0 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, w, iv,w9(p59eyu qooy 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)hn;u3+970qnat xj6)4 1pbp fled agvy and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at i09) p6nfeul7 yagb ;n31vj+tp4xdqa hnfinity, 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 , ilv7n;v4dl rof sides a and b. v,ld; nvlr4 i7What 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 plax gahrt11o:-y2 j) zi(ekoub 0ced in two diagonally opposite corners. In the other two corners are placed charges or0boj-kzh:( 1ag u o1iyx)2etf +3.0 mC and -3.0 mC. 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 +2e, ma(2gfucgi )*rf: xw9mass $6.64 \times 10^{-27} \; kg$) 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 pz,h3eioa j24 xlace three charges, each of 2.0 mC, at the corners of an equila,3ioa eh24xjzteral triangle 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 onm8q el-.g*z9vh b8/5 y;zk6vecgurn y the plates of a 2.0-mF capacitor when it is charged to 10 5b vk;8h*g cnyz .8g/qe6e lrymz-v9u0 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 wd ++vd)omntnu;0-tf(b wn.j 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 filled with air, and the plates are separated f wzyws0g4r0+. h2 g xnp+xyx8by 0.050 mm. If the capacitance is 17.3 pF, whatr2. 4g+x00xswz nyp8+x whfyg 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 0z hi:+*v8p 9 aqfkezvr rbw+: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 (qf j7e)oz, uir/ ppb:a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potentiefzu,( jb:oqp p)ir/7al, 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 conn7- z6shel omu+ected across a 100-V battery. After the battery fully charges the capacitor, the ulz-o m+ 6s7ehcapacitor is immersed in transformer oil (dielectric 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 mF capacitor. How much enej4p mog ejdmv(838n n;jjyuti4qy:* )rgy is stored in the capacito 3 pqn()ouvjy:jg8j 84itdmj*4mne;yr?

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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 capacito +* x y- eirje,wyl bf5krf1lh-3g;cu5r. What is the energy stored in the capacit 5xeikfyj , ;fy-5-lr whb+glc13r*ueor?

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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 when it is cu a: 4qa9b:hjidaa-i*onnected to a 12.0-V bat9-:q4uh bi* ijdaaa:atery. 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 i*l cscw ;j *jarx, 6.ceb92tcqs 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 pj3 zvl866jvtolates 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 co v98d g/id a6j*ikvtx,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 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 o 1bj 0r.mq8wkbfan7p .wx n,q*f 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 are 5aeh)q:8nnx qa 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 area plb: exrg/qiy ((d/1m5fkm x9of $0.40 \; m^{2}$ 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 bcfk:kceav(97zpw8lwhp v h +q( f0/+kecomes fully charged. The battery is remecpka0w9cv pz8h(v:k +f+wlhf k(q/ 7oved 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 v8h.9b69dvbnatmx9(r 31eb b t,li mmconnected 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 constant of 5.0, what is the voltage across the capacitor's plates after the slab is inse m.h xn tvedb3lb9619ivrbb9 amt,8(mrted?

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