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习题练习：Physics Unit17: Electric Potential
本习题练习来源于51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 75 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；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。本试卷的直接作答链接 https://51fly.win/test75.html
 作者: physics  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 匿名未登录  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 followingi*kn grd ql66; is 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 coulom/g i a8-5 ciqdj;i coejy8)*ozb 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 their surrou-*-ulp) dlfqp ndings. Object A has a neq*ldup flp)- -t charge of 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 4 uv53pl r7qtcdirection 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 iy;,g qu9z kagzow-eir0v) 1o0n 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 spw)w6:vh,z j ar,e5 gthhere. 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 ballklroc0p fiya+* lrl3,,5ft7z is accelerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will th ,*f07r,rtyk o+5c3lf lalzi pe 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 saohrtrp e,253vq 0 m*1qfyr j9fme 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 alonx8)8pvef- uf3q:sscal ; gih0g an equipotential surface.cs e xf-sg q)lvu;i80:ph a38f

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mustp 5yy u gj7:offni4etg/*z; *z 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 equal to f70q(+qhy+ g- ml7t5yk,m 4sjsuvhomthat on the electron as a result of moving through a potential difference of one volt is referr+74mmuy kj t0ys+(hv hlsq7-o,q5f mg ed 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 un) 1gx cl3*/avmdw0e gait 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 cop 2raet,v2od v+ 0u 1/sdbvei+rresponds to

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential01xipaty6qr, e+ xuz 0 at a distance of 2.0 m from a positive point charge is 100 V. What ispu+t0ix1z yxre,a0 q6 the absolute 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 distance of 2.0 m from a negato of e16pr.66jh,tr u2c8 eybeive point charge is -100 V. What is the absolute potential 4t 6 r1.fjop,b8ho 66eec2eyur .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 squaqrd5a 2h) av d)79nlf7z hh0)cfr,enaf6/ gacre is 3.0 V when a charge of +Q is located at one of the squl n) ecd7 h)qz/06fnfa a79 vh 5fa,2ad)rghrcare'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 i0td7 geh/p11kq og +axs 3.0 V when a charge of +Q is located at one of the square's cxkh 0 /e1dqtg+ o1p7agorners. 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 cons pt9 bp7 5stcib)t0.fbist of 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 is9avx/ r*9e kbl f*df1f 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 exceptm3f ih o8d4hp) that one has twice thepmdhh)o84 if3 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 capacitor has a capacitance of C. If the area of the plates , d4y7c(ehajb8:r gnt is doubled and nt7(,4d:bhcre j g a8ythe 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 pa ;c cewe tptd da*vroiy44237(2t7diqrallel-plate capacitor fully and then is removed. The plates are immediately pulled apart. (With the ddci(a rvqp3ee;io2 77wt4tcy td2* 4battery 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 between the plates of a give w/9y pav+b9yjn capacitor is weakened, the capa+yy/ vj9bw9apcitance of 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 parap6ac-zrj- r8 . nwy:chllel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the plates :c a-rrhnzj .-w6c8yp 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 capaciw njtb rf3;0p2ph7f42 yo/ smgtor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during o;w /rpy7j4tfpnhbfg sm 2230 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 platesw* b3pmd8( o)esan5 ss of a capacitowb )opm5sdea(* s83 snr.
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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 tgk0 t p+22x2bs9 uyaykh83jmphe plates of a capacitor. Wp2 kyp +xjbs2k3h 92a8u gytm0hat 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 capa 1(ij(qe7uy kdrjr4qx+j 6;fmcitor holding a fixed charge. What happens to the electri4 kequ d+m1(qxj 6jir7jy r;(fc 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 capacitora,sxplaay q8*bm k)f;3)jsv6 is connected to a battery and becomes fully charged. The capacitor is then disconnecty8kl af,bmj; qp3*sxaa6))v sed, 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 charge c9uojcv)daz q8,u(e6e auses the energy ) ov6ajqd,9c 8zeu(eu stored 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 the energyh/r7v :yu)v6:ym5*yusrtnf y stored in that caprtyyf6/uv* :h7ms ) :y5yvurnacitor 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 poi1tpq bf;jn xc +3lp+.tnt A to point B. What is the potential difference betw3lptq+;fn cxt1 p.jb+ een 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 the potential)y ;gtcds8eg 7 is -50 V, to point B, where the potential is +50 V, 8g)et cy7ds;g 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 po1 brr0o)zc q8il0ukd1 tential difference of 500 V. What is the kinetic energy o qkdz)ru1i l8b01rc0o f 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 ek9 ki v :sikkli2)d g:xb3z6+difference of 500 V. What is the speed of ii:k 2+sekvgix3k:bd) 9kl6z 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 zx:uduzz4vj1 x x41;a a potential difference of 1200 V. What speed does it acqzv14xz;dj uuxz4 a1x:uire?

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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 ;6pcj:(. is,nkg7;8a kuo ob8sxh llz 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 electronisnpik. (s58 w is accelerated through a potential difference of 500 V. What is the velocity of the ele i (s8wns.ikp5ctron 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.t;k 4jx5kdchm9l)+ gyxxqrb xr70 :r( The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitud 97) xlk+rk4c5 tbr gxjryx(d;hmq0: xe 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 diffue2,i x8wjye/,e- axb erence between two parallea-wi,xy2 e/ee bu xj8,l metal plates 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 paralokl p50d65:;imif osglel to the +x axis. If the potential at x ;o5g 5m0 ki ifo6p:sld= 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 Nejsmw xk b3az:tj:+uwh/45 l 2ntp)2q/C directed toward the east. If the voltage measured relative to ground at a gw2+2x m45bh3: peq n)l kjwjs/ u:ttzaiven 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 dibam7s8laxxfj e(53q; rection of an electric field of magnitude 3.0 V/m. What is the change in kinetic energ(f7m85 b;sela 3xqa xjy 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 connecn* qd+ lpdwb/7ted to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives atdb7 n+wl/d*p q 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, separated by 0.20 m, are connected to a 12-V batter,n)cz sdi1h p6*c 6:8eifse sty. An electron released from rest atci , ntec)e*186:sfd6zspihs 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 12-12n sm:jkz227s bgjhe 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 plat 2gz2:s7bnje2 s 1kjhme, 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 eszy0gs t ghp9sw z5hit3o /rk:im87;6lectric field of 50 N/C directed toward the east. If the voltage measured relative twzm 5 6or;gki hs3ytspih:/z8 97tg0so ground 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 ear4ik-z g 8o.u)g5*g vyde* scast. If the voltage measured relative to*iergu5kggd) * vy-8 sac4.zo 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 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 wiq4p qx/p6bilnu(98c yl ,be8dll acquire a kinetic energy (in the absence of fric p(b /nidq 8x4,q6elly 9cpub8tion) 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 di-ry; i98sp cihstance 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 wd+4c,hn7uqz,wic .tmg dt++ meter stick. Find the electrical potential for the center of 7hni, z mdcq+u+gtt, c w+dw4.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 -284tuv.btp ix;.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potent ;xit .ut4vp8bial 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 is at (3.0 m, 0). If th) o5l s(oe*dlymt )ub+e potential is taken to be zero at infinity, what is the electric potential energy of a)e *lldoy(o tm+)5us b 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 tjkne:ezai)1k8kwd/2d z h7) ghe potential is taken to be zero at infinity, what is the wgzi781)a2 :wdhnkj / k ezd)keork 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 side a,xdm2d:f p n6/dgx6is a and b. What is the potential at the center of the rectangle if q = 2/6 pfxxg i2d a:n,6mdd.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. Chargest3du 6hfy,q)5 gql)bn of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +36d ,tql3)bq hfnug)y5 .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 +k8 j d) 168juwcqoc*rh4m9efd2e, 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 threx.9t5tis;cn*7rd*o jhd1 b y)u 3xrfde charges, each of 2.0 mC, at the corners of f x*srbtt 1odchdu 3i9r5d 7y xn*);j.an equilateral 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 on the plates o9)+ -30x dno z fwiln: lgon9nqiyb3x+f a 2.0-mF capacitor when it is charged to 100 n9 :f- yl)i3dnxw+n+o lz3qo0 9ixbng 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 capauoteqg/hb gj3r(; ;0 gcitor 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 v+v,sp8j p8 (funzc)sis filled with air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what i88 v,(sj p)pvsfzc+nus 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 capacitoro lalotn;9 -u nsu8rt of9-n55 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*qjx,(*cqu 4r mh;bwp i z+h4vfdw:0h 5.0 cm. If the potential difference between the plates is 2000 V, with the th ,xv qf+4jhbi(qc*4 z;wprmd* u w0h:op 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 battej **z j *y*fwdu/p7dawry. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from tp*jd/ *fz*da*7jwy wuhe 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 eneq9 b2 s8q e5trzgtc;y;rgy is stored in the capacitor z;;ty85teb cqgr29qs?

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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 energy store eyc3f78,+2hdotbw mug9 tpj -d in the capacitor?d mu3f728o thwp+- 9bec ,gytj

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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 connected t w,*lz*3klb vvtoyf -1o a 12.0-V battery. How much work was done in charging this cy b3 k*wlf1*- ,vvltzoapacitor?

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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 scxcf:6 9najr5 40qrlw o 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 /chk+j+6qeypufiem o01 tv 5*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 p a50t:se6llejlates 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 consi4ks,h 2igq2x+4dhq nfsts 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 constkz+ 1xvm5pn z+ructed 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 capacijt--n3 pv gzus8( q1gbtor 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 isdcmdm qt/a/58awo+mpl 2 :a b7 connected 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 capacitance of the c alt aw 58ac2+mdmd/qo7/: bmpapacitor 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 becomes fully 6g* 2 e *mhvj8n1 rbpxmtxqfwplt: c:)50 /oxacharged. The battery is removed and a slab of dielectr 5aor*fwn vl0bg8tex/x: *2hmp)tp:m1q jcx6ic 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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