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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 oo;h) bp ,)imkyq)ng-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 coulomb isvbk 7ehdl0 oy3x/ yc0 r(.a*ta 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 surroundings. Object gsp qo4x7 g70au.k/fba: tf*wA has a ne 7/b*74s: akq0wx.ogfgpatf ut 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 dirjw/) ,evu9q toection 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 directiv83 yaq5kuh x05uyi8kmfew 7n +bf4-bon 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 57jor :xp4tffsphere. 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 acag5o/( yj5n yllj4a0icelerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new speed of 5 jy 4yagln5(0aio l/jthe 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 referred ,pb/d ha8;wqq4ji9g ito 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 gtz/q n0ijt691hc8 dh A to point B along an equipotential surface.ih9njhgd1t z t 0c/8q6

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must berbv:.-8 sgnv we (ssw3

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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 charq5q0 -+,cpequ8sh)7 kyysuze(t+ omrge equal to that on the electron as a result of moving through a potential difference of one volt is referred ,q) u(mhe0 5q yces+r+yu8 st-qokpz7 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 aim (2+ e7avlue 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 correspondsz4fid dvpv*i 6 ) p4bwyb.nfx)r15+xs 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 positi/wrvku t- w,-sve point charge is 100 V. What is the absolur--u tvwsw /k,te 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 dhzm xy 7 ;doz*ko0r71w fp(uef /l)al(istance of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 myuo 1halx)l/*k 7wpez0dr7(foz f 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 s3a6i ysgb; hqk+v3x5+ ,szwzx quare is 3.0 V when a charge of +Q is located aq;s zawi6b y g+xsvxzk3,3h+5 t 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 th1kpwn-:1ew xz1le ;:op 9ubkwe 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 potentiall1u:1npeb1ex o :kpw 9k ;-wwz 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 aree ga7t,7fi rc/xg(aw, e*wn. y

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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 w.5zls2jmk z;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 capa 1u u(d0t6rlz:yi 8rqucitors are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capa18:zurqiuuy d l6 0t(rcitance 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 r+ q 9fj-kdr7ihas a capacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is the d9-qr f7k+jri 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 capacis npi)4f6g;ixtor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge ofni; p6)xs 4ign 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 given capacitor is we+fqn61z-)zoqm ;gv xcakened, the capacitance of that cf +nq1z-qvgmc)oz x 6;apacitor

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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 conb yp8gy.fhbfapoau 461 6*d4zqy6f;g stant voltage by a 8. fp 64;qb6 4uga*o6gd ypfbyy1ahfz battery as they are pulled apart. During this process, 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 capacitor are maintained with c 3vmv*cg+kcu +5nrobml4/2 foonstant voltage by a battery as they are pulled apart. What happenoc+cb +*ruklvo2 5/vgn3m 4mfs 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 plates ofvn- ht4z.gr imzlrtp.t:4 + +t a capaciv.:ittlgt m.4t+ z+rp-4zr hn tor.
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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 platetao3 a mdy3/ez+6i q6yhs(.aks of a capacitor. What happens toa ti/o63sm (a k3.6yaq+ zdhey 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 capacitor cvz khy8,s/ 8mholding a fixed8zh8cm, yk /vs charge. What 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 *:p g7- ifxous3c (xvnfully charged. The capacitor is thfpo is-7(g3*v :cu xxnen 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 of 9vqxj-biyh z 9(.n*twa capacitor holding a constant charge causes the energy *vnxi(wqby9jtz. h- 9 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 energy sto9( 5y. qr ;zq i0njyohqnbyx4cu( j+y8red in that capacit0ry8qoy.+ iyn9 (jzqjny 4cu ;qb5h(xor 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 energ//xeuo* +5wasav,l pay to move 10 C of charge from point A to point B. What is the as /e+av*pwuo5, lx /apotential 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 electron from point A, where the psf)op+zf7/ )uw6wtxrlp8i .w otential is -50 V, to point Bp78 /rls+iz)xfo) fwpwut. 6w, 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 accelerated through an electric :*.jbzqhxoow v9m (0mpotential difference of 500 Vxm bz: q*jmo 9(.vhwo0. 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 rest11yjn;tkr2 v4,+hbtupx/yj e, is accelerated through an electric potential difference of 500 V. What is the speed of t t t1h1uj;4+ v/y2xkjn, epybrhe 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 fallg6hizhnt(va9v:tjp9g nydd 8t 5cs:y(,+ bj )s through a potential difference of 1200 V. What speed yy ctj(hig (,p5z8+sah)b:j vtdv9gdt9:6nn 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 do in mdsjzp*c6 h n)r:jc+c9mmze6 ; oving 8.5×1018electrons?

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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 8fx yj3p6l k1athrough a potential difference of 500 V. What is the velocity of the electron afp13x ayk8lf j6terward?

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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 jbre h2u7f+dz16cs 5scharge of 20 mC. The object is accelerated from rest through a potential diffs+1 urb25 che7dsfj z6erence, and afterward the 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 the electtdy0; 4ojao6r gs38ee rical potential difference between two parallel metal plates separagoer8 3;etoyjd64 sa0ted 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 Vi:9q 5mah )hbi/m, is directed parallel to the +x axis. If the potential at x = 5:aibq5h im) 9h.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 toward the east. If t kdrco8v-*qg-n:htt -( hj aiz6 9uur:he voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly weskh o:cg*d(9: iq-aruu 6j8ztvn-- hrtt 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 magnitude 3:- zzk9nnwxu5 .0 V/m. What is the change in kinetic enern 5wxkzn-z u:9gy 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 connected to a 12-V battery. : kvjn xxy wrgk 4owf:/*k/+m;An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 1/ykxgm r*ofxk v ww4j:n;:k+/ .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 m)x: hgo sfy)) .hsef.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 mhexffh.g)y ):.s) ospositive 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 0.2;ljjf,cqe/ y( 0 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 fromj c/,qjl( ey;f 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 the ,f6 q,d bppgqpl; xa(9,m)hjhvoltage measured relative to ground at a given point in the f,h f9pxpg l;,qj(qpb 6,mh)daield 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 directbxztv+:t.ipbr+m d e.4 +t ij*ed toward the 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 south of thati dvt+ + :+zptextbm 4.rj.*ib 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 thrv 2d h7meq:bwl( ;l1 jl,lsx0bough a potential difference of 12 V, it will acquire a kinetiebd1q(mjw;lxb v h2:0,lsl7 lc energy (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 dl1gm)mw ry 6.jistance of 5.0×10−10m 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 thc.zr9o o9n+ bxe ends of a meter stick. Find the electrical potential for the center ofbr+9.co9ox zn 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 (3.0 h+x7o3xgx wb d1*90cnzqy- qg m, 0). If the potential is taken to be zero at infinity, what is the elect9 cq+- 3q7nzh1wdgo0xx*gbyx ric 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.th.mcuq3+9 ed7e.a qu 0 m, 0). If the poten.+cha uqe3t9d .u em7qtial is taken 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, i 4lyu8.9 npjr0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work re9j4i.u lyn8 rpquired 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 rectauv(cs y- g+8-spg-goongle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a ggpus-+c 8y(gv - s-oo= 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. ao th g u b+d(*/6bjbhqkm4*+vCharges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. Whatdtgj (a* 6hbu+bbm /vkh*o+4q 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 (charg7o6,lw80m y odbi q/lu0x. zcp+qvhk+e +2e, mass 6.64×10−27kg) moves head-on at a fixed gold nucleus (charge +79e). If the distance of closest approach is 2.0×10−10m, 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 necessay*(g.c6f/.s,)truz-d1ker u 6 fu(biqsstl jry to place three charges, each of 2.0 mC, at the corners of an equilateral trig.,yf (zbrdueu( *f r.ts1i s q-jtusk6l/)c6angle 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;pa3 xfa (/qcp-mF capacitor when it is charged to 103 /;capfq axp(0 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 7zrl9i2)8 wiwyt3slye6v2i t(l vo k -plates of area 0.50m2 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 a05q8 hwudwr)pre separated by 0.050 mm. If the capacitance is 17.3 pF, what 50u)rwpd8whq 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 has3yur 1zthn ot +j)5r6s plates of area 0.20m2 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 the potenthpd.z6 : 3 h/d,bjfp lx0le0kcial difference between the plates is 2000 V, with the top plate at the higher potential, what is e0j3hkc.:pb xhl6dpz d f0/,lthe 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 acoy-2d7 l ya,geross a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersedy,y a o-leg72d 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 capacitof1emdw1w/ sq+ r. How much energy is stored in the capacitor?ef+wmd1q1 sw/

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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 stored in wn2 wmwe5 *ym4the capacitnwm* mw4y5we2or?

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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 it3 bajz).4jc dda6xdjk/ f3oye9h + tw2 is connected to a 12.0-V b f3j2hty ox 93+4j z.awa/cdkdj)6 dbeattery. 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 capacitore6 d3bka *f.ky ;6ftzb is charged so that it stores 2.0×10−3J 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 areati25p(m.3w nyircdu1 1.5×10−4m2 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 9umz*xl 7;3nvs q9p9z zu:f wqof plates of area 1.5×10−4m2 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 of i:a ss iy4zy6 ga4vn)8area 1.5×10−4m2 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 x zrf2a9:l7xl(sv wj4 area of 0.40m2 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 withd y9e-ibh4m c+ plate area of 0.40m2 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 becomes fully cha.l*tf dyywf qw+ l--2.u0m)2rlvpoc3 i b 3jmfrged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric h dml bt fyv2ufcqr2i0y*3lm -)lw .- j3.fo+wpas 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 o : 44pz-0 n,:8fgrq nlo +a2ekbmmxdcto 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 capaga :o e+m f,2x-k4qmnp8d:lrzoc bn 40citor's plates after the slab is inserted?

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