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习题练习：Physics Unit17: Electric Potential
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 作者: admin  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 following is not a vvx ( 2wtnh)r5j fe.2kiector?

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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 g z xp n.7teb4,j2.psua

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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 Auwhvqz g7eb03gc1 v 85i5ne5q has a net charge of ex0igb 5ev uzqe5g13hwn vc 58q7cess 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 electric fk) v98bkuq1 -/rwy ;qvi7 rhdjield

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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 electhyfsj+z t+mnyaa;mf;a 7nk 7ucc w 4+9 6g-/rrric 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 5 hj-0 nmw*dhhhollow 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 ak4te e8q it6+6g 4s)zehzt1kk 500 V potential difference. If the potential difference it4ie6)6 +8ezqkkzkgh s4 et1ts 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 the same potential is ka(zx2cl7d r3 b4 e t1laes*6vreferred 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 frnelbta6abz nrc,w/w 091c uwxlq..;(om point A to point B along an equipotential surfaceb0t .l,b azn cuwq;waxl( 19r c.w6n/e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfa*l: am-lt hv3vsgehx+w+yq: * ce 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 carrying a charge equal to that on the 0s*hqd 0)vw qg2b7rmdelectron as a result of moving through a potential difference of one voltq vw0*md07bh sg)dqr 2 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 3bl bcvti /9x/lxw o3aj11n*ba 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 corn-.urut35lz lv kz7ksy3 c,7wresponds 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-vez5 karcn4e;-; bt v a distance of 2.0 m from a positive point charge is 100 V. What iv4-kern; ab ;5tc z-evs 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 di zd0j6v3 h3(a*wynhsm stance of 2.0 m from a negative point charge is -100 V. What is the absolute potenzm(3 v ah6hwdy3jn*0 stial 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 potentigmk. d, hb:h)sal at the exact 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 absolute potential at the square's center when each of the other corners is also filled with a charge o hh:,.bmdsgk) f +Q?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potenti. 9goy6db(;2 bxwht stal at the 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 absolute potential at the square's cenbytt9shb g ;dx2.(o6w ter 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 c(uops 5:hoqqs )p s:e/harges 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 voltgv s:tct.f4k* 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 in every respect e,8(gbkgb abj* jif:)except that one has twice the plate area of the ot (*j )aebgkf:,ji8gbbher. 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 Coi*qfr , m gduwyz 0zm2+.+y*v. If the area of the plates is doubled and the distance o,*f2mymu* +vg q+zw d ri.0yzbetween 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 par2(f o-ts3 2qfhzq8l7 f7csftl8q7nvhallel-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 difference betwe fq 3s(2cofllt n zqqh87t7v2s8-h7ffen 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(kx ws+u50za /enf;ah of a given capacitor is weakened, the capacitance of that capacitorfa0a/+u nw( x zshek;5

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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 maintained with col8yw8 w/vu3mz 7g rr6bnstant voltage by a battery as they are pulled apart. During this proce3vu8l zy br8m/7rw6 wgss, 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 capacikkc5b(gdite8n3 3 hq7tor are maintained with constant voltage by a battery as they are pulled apart. What happens to the stre3d gc ni5kkbh38 (q7tength 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 fo6.wf*/)sn jz2v fqmo mm2qw)ur adding a dielectric material between the plates of a capau6q/) wnmowf2mj.* v)m2 qfs zcitor.
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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 papecehw0d6z* wh:g +1cddr is placed between the plates of a capacitor. What happens to thd1w*: zg+ ccd6hw0hede 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 plzlgaojr9q17y i 63/naper is placed between the plates of a capacitor holding a fixed charge. Wr19/lanzl37i6 g yqjohat happens to the electric 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 capacitor is connected to a battery and becomes f/;(;ggdy4skp yi th5j ully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a wgs;;ypg/d( k4 hj tiy5ay 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 cy 8 ,z h6/69k6xtugcg el5rvnnharge causes the energy stored in that zvt/gu8 y6l ce6,rngk5 hxn69capacitor 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 eneu3/ *j;1,oo tj y zl(hyml(mqgrgy stored in that caylju/3qhm(j 1tom;l*yg o,z( pacitor 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 mo an3:l*aq, 5wtqf8 evhve 10 C of charge from point A to point B. What is the potential difference between pof:v3l qea8,*a wqhn5tints 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 powd2uxk6s*s5 qa1 05nvof4p ro tential is -50 V, tvpq o5w2asx1d*k 45 fnrus0o6 o point 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, y byat;o8/*kz is accelerated through an electric potential difference of 500 V. What ibkya;o /tzy8*s 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 accelera:e7 xr yr4h83m(m:jebi 9g cl b)r* t(qa)sfjnted through an electric potential difference of 500 V. What ib)bmf4cqi3r8g( ry9jlesm) (xjnatr: e*:h7s 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 potential difference y0w .dlh+t7 q,hv4hjwof 1200 V. What0vjhq.w7, h4 ydw+tl h speed 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) /g qls9ab6ko12wwmdtj/ l7o.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 potential diflkrp wv fx-:+9ference of 500 V. What is the velocity of the ef+vw k lx9r:p-lectron 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 carries5,);igrrn)u ia +so0 mulh2zy a charge of 20 mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnithlai)0os ,)zig n2+; ryruum 5ude 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 pa-rga m +3z3p()jwjkgrrallel metal p w+j)-k3 z3j(gg pmarrlates 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, witr roeh ;pcnj4zeha1s. ,7 fk26h a magnitude of 500 V/m, is directed parallel to the +xs ,aez;4n6cpke fhjrro12 7.h axis. If the potential at x = 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 fieldjhf6pha*6a ypto6. 6bhkzm26 of 50 N/C directed toward the east. If the voltage measured relap266aj o6kt ba hh.p*y66zfh mtive 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 an electric fi)2mk13gkwm 37 -8vkox jt ctyweld of magnitude 3.0 V/m. What is the change in kinetic mkkjv87 3gx wkw13o m )y2ct-tenergy 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 0.26j kpunxv(m p-c*+e6g 0 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the x(kp jep v6+-n*m6 cgunegative plate. When the electron arrives at 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 csc y s-83hd7cc8w7tctonnected 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 0.050 m from the positive plate, how much kinetic energy does the electroch3cyc- dcwss88 7tt7n 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 ,d(tn ge50f6i tcrp316qav u y0.20 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 0.050 m from the positive plate, what is the speed of tht6eqt(5n fy p106 ,igu 3darvce 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 f/yedt:8vh 3e5lswr2e ield of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, wha yhe8de/sev3wr5t 2:l t 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 el0nss/et9)./o 8dd mvm. ayihgectric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field isge/ 0s) m/ ho9id nmtd8.vsay. 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 differencc 59ivmz 3d-q dxux2w6zx:t 2ne of 12 V, it will acquire a kinetic en tx:xc63i-qn 9wm2d zvdzxu5 2ergy (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 u3 0 :7stndcpma 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. Findpu u *1s-*yhjbjse3 j, the electrical potential3jj*sebsyu1j p*hu , - 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 -,mxcqakb 1 s:;5gko oitt(4 7u2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity7k5 m;quo:kgo1ta cs(,4xt bi, 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 is at (3.0 m, 0).e4xw)vs; gh6n If the potential is ;sgwh4ex) vn6taken to be zero at infinity, what is 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 ug6mr+e..ful vs -/5t iabyn9a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the workyg 6mtlbu9 .r.nsv/u -e5f ai+ 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 c(g4zc5a2k/kqj /i:q)q6n qiznojf3g orners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = z(nc/:3q/kojq)nigjqfi 2ak 5qg46z2.0 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 dia / cniwtb kx3:gg2/g n2r.u-m10sbwy ggonally op yng ck -n/3rgb/w2i0sb:utg2.mg 1xw posite corners. In the other two corners are 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 +2exo (+-osw boa ip571sm, 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 b 92xgn2goi;p place three charges, each of 2.0 mC, at the corners of an equilater2 gnbxp2;g9oial 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 of a 2.0-mF c9jaq ms5)z iz3jg3 yy k*f-g3capacitor when it is charged to 100 V5sz j 3z3 ifq*k3cg9ajy)gy-m?

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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 au/d l3 aiftt )-ke0ki3rea $0.50 \; m^{2}$ 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 platm nim+z/cu86 -nqy. ules are separated by 0.050 mm. If the capacitance is 17.3 pF, what is tcu i/z6n-.mm8qn +l uyhe 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 capacitora2bnl//; zah mq57s fw 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 pwgdq jj8o g31cj8 2:eld w/wt0late separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential,8 g8g3wqt 01l e jc/wjod2:jwd 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 connecv 4l;xy.yal,k;y m5m yted across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional ch; ym ;y4,ly vklyx5m.aarge 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 enh)wve z3rhuae6-7 jw)ergy is stored in the ca)6 w)vjaeruehw-3 hz7 pacitor?

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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 sto/:cfjo -a+dz rred in the capacitoj:dc+ -fza/r or?

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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 d nuiaxig196gmjco-8x8zjsn j*:)j6 itor when it is connected to a 12.0-V battery. How much work was done in char8gzx)1 6j jiu*c8 -:jnxos anijgd m96ging 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 sto;:z bc -qmtzg4res $2.0 \times 10^{-3} \; J$ 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 capacito0ck;1 xh8x y, jffxyu)r 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 of plates of areab2icui9tf(i7eq nq9 apw:3x- r;9p iu $1.5 \times 10^{-4} \; m^{2}$ 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 co, flg6uusnv10nsists 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 capac/dmp/,ol*r3p k6rcn pitor 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 constructed withai:ay ; 0f*s yblynu/7 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 batte 4 ukbv9qxd w(5j*zu-j3bc tp;ry 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 dielectru (b5 v39-uz; kqbdjtj4*cx pwic 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 becomeqrd-rt 2hsb-51k zuu 8s 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 diez5k qu-1uhr sbd8t-r2lectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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