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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 af x( bvr*,3-wtj;w8aq cqorhkg 5;n. v 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 adabqv9+e ch/1sa-mf9 plf-u /

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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 surroundingsi ( j bzqq29;x/5m7mj2qn6m)tv zwmzs. Object A has a net charge of excess electrons. Object B is grounded. Which obmmvq nw 7jtxb)2sqmmq6 (/iz 2zj ;z59ject 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 electric sx/ md 5y4r8t.2 z cr70kdddb+w:wsjefield

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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 rj.*;ie-zffq 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 conductin z+c*cd)yv 2vag 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 1tkbnc*ej/m jk 7 m+1kspeed v by a 500 V potential difference. If the potential difference is changed to 2000 V, w*+ 1mekcb/k k1mn jj7that 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 potentialtrz f,,p eqk3nc1:ti, 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 xszp.o kms17 c,r- tkpk6ge 0-point A to point B along an equipotential surfac--zs,kce7 smkx6kptp o 1.r0g e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface v2lc56f8gl3n 9y9bv thiah d. 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 particle 6l -i(mjbl1h+if*ypi j oe;)hcarrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is refemp fe 1yh()i+-l;holj b6i*ijrred 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 )nia/ lzy v t:hg6,ur*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 corro0lbl63kwd 672hkcyl f( +7jh9lau 9dogx :lhesponds 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 gqlyn875lh-hp qu.a( n ) zqaz;3wkkdo/j;6k a positive point charge is 100 V. What is the absolq/wuhan -qjzqg 3z6 pkl )d7k8.ok(ya;l;h5 nute 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 opq,/to1 si y:ff 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from t sf:o1,piq ty/he 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 when a charge bl - ghjzi7.wfwz937 tof +Q is located at one of the square's corners. What is the absolute potentiallw77izjtw b 3zgf-h .9 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 centejpee)*ulkf9y76 :ye l;u3rt fer ah2 +r of a square is 3.0 V when a charge of +Q is located ahk )3alp;r :yr l2+ft7e *je9u6eyf eut one of the square'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 charges that ar8v m4bx r+mbamo7ww6:,oax nq*z3:mze

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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 kkc7a;jf*0 tlan. fmbrh(r).is 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 edi76/bh( sf nin every respect except that one has twice the plate area of the other. If the smsn (6if7eh/ bdaller 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((b tnyid*-l y area of the plates is doubled and the di ldny(ybi-(* tstance 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 kaz. 4mum *mj j2kks5xk .mwox( .ov11removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the potential difference betwek 4k1wkj2umm m1k xsmx. *ooj5 az(.v.en 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 betweemi,/j; n q h,ck,+zzm/d2ipjfn the plates of a given capacitor is weakened, the capa,+/fp/zm cz in,qdj2, hij;mkcitance 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 parallel-plate capacitor are rn pu5y,8 vc*umaintained with constant voltage by a battery as they are pulled apart. During this process, the amount of chacu 8nr,ypv5*urge 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 vol8m gm(k 9aka q6;kf,cytage by a bat;8m9q gyk6cfkm(a ,katery 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 d2w xiur5dy1n:dhi+ w8ielectric material between the plates of a capa2+nuydw w8 dix5r:h 1icitor.
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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 plates of w//4hd q9 ch*g,ir f/v9zfcrpa capacitor. What hap/f/fzqc9dv hg9, r4h*wr /p icpens 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 se*8;s fpn(uelihvgu( s /ndj; a/ 4e8as paper is placed between the plates of a capacitor holding a fixed charge. What happens to the electric field between the puldnafsg s/e e(u;*8ji (vp sh/4e8n;lates?

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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 fj)b*57 ;wu5tjw tzog g (a;akv/ tpyx.ully charged. The cab zkgvt wyt5xot; (gu)7.5 a*jpaj; /wpacitor 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 of2 8ngq yu*fq u)fptq). a capacitor holding a constant charge causes the energy stored in that capacitor toqu*8pf) .tqg fu 2y)qn

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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 causg x** a kx(swojre/v26es the energy stored in that capacitor to6xk( *ajo/ grv*e2xws

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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 tou : :+czzqhwg6 point B. What is the potential difference between points A a qwhc:g:z6 u+znd 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, - zu4gfi8rg; ewhere the potential is -50 V, to point B, 4g8 z;-fiuregwhere 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 thr1wxai..71pt(lts zu r ough an electric potential difference of 500 V. What is the kin wsxa1 7z rut(.plt1.ietic 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 diwkcob v1+efw67 gq9c-fference of 500 V. What is the speed of the pfc7owqb+k69 -ewgvc1roton?

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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 prn 8j05nx:1z5nfcd-sc jz e h4hoton falls through a potential difference of 1200 V. What sjcnsj-50 nd4fnx 5 cz81 he:zhpeed 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 eqd6 o :nt.f e.0upa9odo 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 sp d12nht 0nf)difference of 500 V. What is the velocit1sdh)t 2fnn0p y 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 2o0d6py4lheh )3*g omu0 mC. The object is accelerated from rest through a potential difference, and afterward the *ump3)6 4odge 0hlhoyball 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 between two paral4fgt mb tvm91*1qrrv-lel metal plates separated by fgm*tr-brqt 1v14v m9 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 parallel4yhlazq-3kp i8 r.w,m6 o,gz y to the +x axis. If the potential at x =rz-ly.mg64 ,3 khzpya,iq8ow 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 to 2x9uosadt*olz8 l-6wpm8 ug*ward the east. If the voltage measured relative to ground at a given point is 80 V, what is the l 2p6*mw 9ostu l-xozad *88guvoltage 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 field of magnitudewo w8(7 yema.d 3.0 V/m. What is the c ym7ew do.wa8(hange 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 wx2 5uheqx+)orw++7t kc x+et 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++xc5 e+) he k tqwuwr+o7t2xx 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,r .x,92 w2yvna(dmlpp:k r6ijp+ 6tgi separated by 0.20 m, are connected to a 12-V battery. An electron released from rest at ir pg9v(nyjmpwp6 ,6lk2d2i+ax. t r: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 0.2a6enam f s16gt( k3xi20 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 distan6 t6(k1ang3efm xas2ice 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 toward the east. If t*ivgs;oo v u+joue8,: he 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 easeoj:oo;+g sv *vuui, 8t 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 the vosd/oi(sskaq8 4 13xzsltage measured relative to ground at a given point in the 8s /i 3sk4za(d x1soqsfield 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 difj:sft s1w/i01whor0 dference of 12 V, it will acquire a kinetic enfs/1 tdw0rs 01whj:i oergy (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 distance ofsh* .cd1ovwzo *a6 cv2 $5.0 \times 10^{-10} \; m$ 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. Fiw b4hhl.8l0/u6 4qw*powh qpznd the electrical potential for the chowq/ l*w bwzh6 0p448l p.uqhenter 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 (3lm,1ar11hgxh vr)4m efq7 f/p.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential at point (07rl)4fmm /vhfg peh,q 11axr1, 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 xi/2wsf47evd ybq 7:ot+q b s0(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 poi7i4b+tbxd 0 oy2:vqq7/w fessnt (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). Ifl7woi) 0q bh: gm mb:pdu8z39d the potential is taken to be zero at infinity, what is tml7z )wpdo 8d3 ibuq:bm:h9g 0he 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 rectan xes oxj 4944(m/v:r2bqseaokgle of sides a and b. What is the potential at the centerxoes2m9s(x/4okvj : aq 4b4er 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 ic4u tad+i)rtv3iy/ w9 n two diagonally opposite corners. In the other two corners arev4t)u9ctiar+w/i y3d placed charges of +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 +-8hwqq .na 2wp2e, 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 chamq:azk,2k+r.n6f+oihzeglz:t ; 5s n rges, each of 2.0 mC, at the corners of an equilateral triangle;:tm5l+ok,k. r zsne:i n+z6af ghqz2 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 of a 2.0-mF capacitor whigh* ) ajdh1 lxy6.zr6en it is charged to 100 hgxa j66.)d h *ryz1liV?

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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 hass *r omj0 0sxgb-pnx4- 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 filled with air, aco. h/k 53vthqnd the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, wkh/5oc.qh t3vhat 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 p+.fjjz-vh :g 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 separatilkaw4a:rbq( +:6la+ 2vfx/np -w ddquon of 5.0 cm. If the potential difference bevl+a nqdu +(xw- aa:pw/ f:r2d4l6kqb tween the 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. Afyk r 4mvlvswoc10g*5y **ard /ter 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 connected d s/*y*rl adg0 rvcy ov*14k5mwuring 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 enerb n)x0zkfe .qf1ian(76 ie:eygy is stored in abnezykxn .)ife7e q1:i 6f(0the 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 capaciko1p*lu;f+g5zjhp1eaqz.y8 2 6b2tof b8a mvtor. What is the energy stored in the capaciup 1+pt8;z85m*bfz o lf 2 jyq1k gae2a.v6hbotor?

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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 flofsqbqfh4jgf/2 ;f/ b6ws onto the plates of a capacitor when it is connected to a 12.0-V batfqf4hf /; /2sqgfb6j btery. 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 h+ujyjo.: zb ;ete16h is 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 capn n8+7* oaqhy0ps-gceacitor consists 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 consists.673tq;mfne1l cjam s 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 capdf+o5r4g rgwc:y2wik iz 6r1-acitor consists 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 i ;bmbp.8* 4j*dodpufc (+k g.gb kox)zs 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 cap8mzyfqrig/: ol;xj2:1 i5 bn vacitor 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 connected to a 50-V battery anddn)c dwe08u :x becomes fully charged. The battery is removed and a slab of dielectric that compled cu 8e:w)ndx0tely 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 battery and becomes fully chargex78 ya a smcp2(*ic1pg:)wt jsd. 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 inserte1gaw 2 7si x*8acytpj:)cms(pd?

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