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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://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://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 a vectobhp,x5gqc6frw,m v (0r?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulomby2tfry6evr ,wt; ot 46ma /*lu 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 su -zyb)h4y)9 bn bowk1+ ,dteoxrroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher 9,oybb)k zdxebho+w14 - ynt) 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 izvy6 6seyk 92ry+f,q ov 5il6fg70dl mn the direction 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 in a direction opposite torr9l5/ zgir 5q 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 co z3jpahot8:/-6;xmw aikwa /onducting 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 V potentia *wd2 yr2)flx+c1dlhkyn3 x5rl difference. If the potential difference is changed to2lwxn *lyy r15 d+cxfr32 )hdk 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 potential is r k:jppbi sv)q+ yp,r +b2 t)hx6l1z*dxeferred 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 poibob3bdv:9; b int B along an equipotential surfacebbb vo:bd93 ;i.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mwnt9 +d7wgfz0 tz43tyust 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 that on the electro6en 3*hjzknjnsr3w:e u5j **h octy **n as a result of moving through a potential difference of one volt is referred to*hh w*e *tsjr *n:njou3ky jc5 ne*z63 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 unit dn3vnck9;rv; jzxqr/n(-x;y 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 correspondsfj2ptd u w(2zi;* eu+r 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 positive point charl/6 ks jnty**jly3vm55d/ku g ge is 100 V. What is the absolute potential 4.0 m away l56v5*jkknjy//gmyds l * u t3from 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 poi r m/35+aakmjcnjc+yvn3/ 39n-eco cjnt charge is -100 n5c+ 9c/m/r 3 mcj3najeao +vkcnjy-3V. 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 when a chi(mgh*jz*:ur ly ( 3tvarge of +Q is located at one of the square's corners. What is the absolutmit((jz*3 ulgh:r yv*e 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 +Q mytdh: hi hj3c -i52-se ad:)zis located at one of the square's corners. What is the absolute potential at the sqseih5cad t-:d j-h i:)3h2zymuare'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 oadryipb* ;sj p:g;84 hf 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 4: gpqor6r symrl*j 2nv3(z,: n1viunis 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 identicalqqv6j gy3/.-edwfxg nl5d,m, in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitanm q qy.5w-nd/d,3e j,v6 xgfglce 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 sc.o-. fs1mhj plates is doubled and the distance between the plates is halved, what is the new cap.s-h1fso .cjm acitance?

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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 parg)3 m /f2efxpcallel-plate capacitor fully and then is removed. The plates are immediately pulled apart. (With the batt fm/pg2xe)3cf ery 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 thc .v/4x,12ckyhliu xre plates of a given capacitor is weakened, the capacitancer42hi uk,v . xx1ylcc/ 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 maintai3pm6s,n7-hew x ,ktijned with constant voltage by a battery as they are pulled apart. During this process, the amount of chargesk nj,pth7 w36xim,- e 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 cawbp j8eu;ys0o0 ,6ml qpacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to 0,woe6s y p;mjq80ulbthe 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 dielectrao8/ .1bqsslzic material between the plates of a capaciobz/1s.a8 sq ltor.
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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 a14qrppsp6 .nns paper is placed between the plates of a capacitor. prq ps1p4n .6nWhat 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 n;-dd7wa ww 0nv3umlef87 :wx is placed between the plates of a capacitor holding a fixed charge. What happens to the electric field betweu 3m-d:fn8wn daxe 77wwwv; 0len 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 connecqtk;x.-q fp jms8j2j5o 1lyf 9ted to a battery and becomes fully charged. The capacitor is then disconnected, and xy 9pl2qo5fjsj8m;fj -q k 1.tthe 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 causes the en+hwig 1h(eq*hco,.tp ergy stored in ei h (1 .+h*pqctowgh,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 energy stored in thaq(zg .q:thlj1e+mrv;9f (khsx 06ymdt capacie y.((zlmthmx+1 0 gqsq9j ;frkhv:d6tor 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 fro-b,/ec2k8uotr0i./h jjm id m m point A to point B. What is the potential difference between point.8 2eht/ijr0 /dmuk jbimoc-,s 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, w47xsxy kx 2n cww2sid6 1vwub* 9z-i,ehere the potential is -50 V, to point4xsw12-x iuc wid62 97z,e yws*vbknx 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 accelerateq( f4ib-q+w*,vjmpvmd through an electric potential difference of 500 V. Wqfw j*imb,+ (v4mpv-qhat 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 u(mr9.c;is ol;z 4lwa potential difference of 500 V. 4 9za.w;sim crll;u(o What 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 potentia8zd fl:e, s zl6elis+;l difference of 1200 V. What speed do:8z;zflsl6 +s ,eedlies 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 9ft/0;f u-dz)o p uzuh).0 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 a poag0 j 6y ,as1-rhsyd)dayc)on0-q7 dotential difference of 500 V. What is tho1rds0,s0co d6 hgy -a-aqn d jay)y7)e 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 accelewd:z - z)g)-x, flhkyh s/vt+ua,1owarated from rest through a potential difference, and afterward the ball is vw:)1fd) -zgs,hayu+-w xhz/ la k,ot 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 .8*x0(*a x/tzt;ycrq r xxzvpbetween two parallel metal plates separated byq.xz*(y r0tx x8/zcx rvp a*;t 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 magnitl*;o,cpdw4f sx;qico3oo(x8 ude of 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 x = 2.0 qoop cxco84o,i( *;x3wdfl s; 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 toward55s(r wcirfy* the east. If the voltage measured relative to ground at a given point is 80 V, wha 5(fr5wsir yc*t 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 th1 e8 cv;zj3dp bvmxke m38,tok8ir5(de direction of an electric field of magnitude 3.0 V/m. What pb1e53 8d ctvk8rv 3i,x kde8;jo(mm zis 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, a3s8y,b2o5u ac8zuqlr 1 dc1i 1gv1psseparated 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 dispy8,cu3a izrvlqudos1 cbs85a12 11g tance 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, c(w zjizgg5)f7a)vvmu w(*hv l4nx4 4 separated by 0.20 m, are connected to a 12-V battery. An ele) )vgfmzcjx w nwzlv h i*5a(474(vgu4ctron 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, 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 battrwhxdj.uuqtd 9q6 ,5 5ery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a d 9uq,dtxh65 qwd u5jr.istance 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. Ir d-ywo o +kmw +v 2gdrk.5;2 gb+ywfhd2-2mwbf the voltage measurk -v25mm;2+hwd 2o wwr2bb+d- +gogd wy .rfyked 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 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 tdor- rv4el*n 2hypk9 1he 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 rekh1y*pvr odl2 n94-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 acquire a kv6v2hkbj) i,iinetic energy (in the ih j,bv6i 2k)vabsence 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 of go ke+45s xf)q$5.0 \times 10^{-10} \; m$ 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 elzshu n5i3eo2vqq;nfd9lvr(.7 :- dc vectrical potential for the center n9n5d7if l; vvq:vq3.h( crs eo2-zduof 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 chargf2zb wupg tu4u1*44aoe is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric po*gup4b fu4tw1 z42uaotential 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). Ifkc+/fjo69on xfzg 2sqjp0n30( fz w /d the potential is taken to be zero at infinity, what is(pzf /30qw92kgn focjox/jz0 f6s dn+ the electric 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 at ruplp;h),2 p,dpmi 1x (3.0 m, 0). If the pote;, 2prlx, d)ppuh pim1ntial 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 ofepor3 -oeemi 1 m6-h(q.txpn. sides a and b. What is the potential at the center of the rectangl-t eee . nipq-opx.31m6moh(re 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 at- r/uiv0lbf.opriwp 0r )*) ire placed in two diagonally opposite corners. In the other two corners are placed charrt) r* bw 0ilv uo/pi).0ifpr-ges 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 +2e, 5 h(vst- 31a./nb0c rskr gibumass $6.64 \times 10^{-27} \; kg$) 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 plyb-g dm-2v c adc-s0)sace three charges, each of 2.0 mC, at the corners of an equilateral tria--s vdas cb2yd) c0-gmngle 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-m .q4wkl6 y(nthp i(0yawlzi-az0ph), F capacitor when it is charged to 100 w6ypllht0 piq a wkh0z(n)4i-.(,yaz 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 pla d d:44st/ kxw69eyieu n7sur.tes 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 p4ivrpyv4t5eas -1;z g lates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate 14pziyasv;5r4ev - g tarea?

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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 plgeus.e,3jjh:59 ,qxnj1r z cvates 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 fxt2 d3t vzcvfyku,.9 /z+8vk the potential difference between the plates is 20+vft xvd9u2z8/.kk ,tv z3fyc00 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. Aqy1)lj fqk 5+hfter 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 rq15+f q ly)hjkemained 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 placv,d fktz 2p;iy:a0 : 4:k3cyoeo+ o-f*zn jsrted on a 15 mF capacitor. How much energy is stored in the capziet v4 -d k o:c*jr;a+ f ps2yof0n:3yzk,:toacitor?

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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 t+isjs8l*ys8ln x gx .(h,om, uhe energy stored in the capacitor?,s*xix ju hom.(,nlsy 8ls 8+g

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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 isag.fx7m 3q)vtzpg ;h - connected to a 12.0-V battery. How much work was doneqvm xg;-t7)g p3zaf. h 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 so that it stores c+)jv gm*z6pt ;dqc*q$2.0 \times 10^{-3} \; J$ 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 of + )qa+ )tkg*bw5i)rz u3hnwldarea $1.5 \times 10^{-4} \; m^{2}$ 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 capacitj9g/m4-zjinp)xyi ddks s5jy40)p i6or 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 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 of plates ofbonnn1 d mb ;pt-2cu 4z;ai)s6m+0kcre lt:5 e 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 constructu;)w9pl1f:z7aphh .r x q.zue ed 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 7qys q 9ym7fv6xe5j5twith 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 b9 odb00co5am1tpk.rt *j d2m jattery 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 1 a5t0md b9cr 2oj.pd0 *tjomkhas 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 batter,l kw2*1odbc;czij lr 161kwcy 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, wha*2 rw j1cz;ck wb6oi1l,1k cdlt is the voltage across the capacitor's plates after the slab is inserted?

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