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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 pm(4b 7w4gtxva 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 i hrz1/ s+x02yrluh3 qis 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 surroundinwqvz65/(x:38 ktfpd cl;k strgs. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a hig wcd sf8pk krq;vt/65xt3 (z:lher 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 direct3nj -zgm,f;9z i9ly uvion 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 onxepxsk 4j( m04fv *itpp9:rsk ys *;1pposite 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 condumcjdxye . 1/g1cting 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 froxnw2f5bc vv47x iigd8/ v*o 22/h f+jpf3gwdw m 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 ofhf/xpn32g jd 7+g* bcvwfvwd22o/ xwi8i4vf5 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 iqlm5h nn :j c. kj5mri56,zj.vs 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 point9xzzker 35r:if s4cgd9 k ;e:c A to point B along an equipotential surface.: rzx ies5cc:4rekg9zk;39 fd

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfpp ae2-fk/g g: *tse68q) irwwace 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 thaic)2 ) o8nqgp 0ptk6qrt on the electron as a result of op0)p t62qq)n8kgi crmoving through a potential difference of one volt 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 a.gq,yo.i eduu*6m ebqnuxe 9 d 5ts)9: 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 corresponds ( 2z+khru,unato

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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 cayd:rmp*ge,.i).d sc4kmg2 eq. qhh; harge is 100 V. What is tym;,2 pqeqg dchgh. ki.dm*4er:. a) she 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 jj6qta c*(rrl6;d; 4z yc np8sof 2.0 m from a negative point charge is -100 V. What isjy;sq z *dt c6nr48( rjaplc6; 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 r.,bnbbr kuw: lz2) g viewx8z9-e-4wwhen a charge of +Q is located at one of the squxkebzw2wv8:g,z4nrlu)-e. brib9 -w are'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 rcpdb m7i4*q 62qm, rksquare is 3.0 V when a charge of +Q is located at one of the square's corners. What is thedrq4b7i*qpc m, mrk 62 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 consi7w8igl+na i;455aky/oskoivst 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 is ;u4wkvk7u2 zl( .dkxm0m .ik ea

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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 except that one has8g0td 7f0 dregmm 1zy7 twice the plate area of the og7tdye70 0m dr8 mfzg1ther. 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 au z1 jo(.oo;iwrea of the plates is doubled and the distance between the plates is halved, wh;zw (.uoi jo1oat 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 full.w p/t6scg9wj k3 2o3z4svx 2sylrm9ly and then is removed. The plates are immediately pulled apart. (With the b2l9v 6gzs 3wxcly /9.sjkto3r2mw4p sattery 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 given capaqqv,wyk x: b51u jaq83 g1xbk:citor is weakened, the capacitance of txqu,jbv 31:x 8k gy1w5 bqa:kqhat 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 capacin vgnj8,;7 elmtor are maintained with constant voltage by a battery as they are pulled apart. During this;gl nn,mej87 v 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 c);d hw5ey3d7f kcf db4apacitor are maintained with constant voltage by a battery d37hfc )k eb;4fydwd5 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 dielectric matezb2 wz 3zfz e s1h/00dx,o8zyirial between the plates of a capacitorz 2 0zdo1,0swf8z/hyz3zix eb .
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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 place8f.ymm v 2ki3ud between the plates of a capacitor. What happens to the capackyvmu.fi 823m itance?

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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 capauc,z(s(uz:dsrl9,m 8 f 1 si 4lszicd3citor holding a fixed charge. What happens to the48irsizf(zs9 m(,: u1s, l dcdusclz3 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 connectr60r; 5a g805xy u dxfvepabf.ed to a battery and becomes fully charged. The capa.e0f6 pfgbuyx0 d rv;x8a5r5acitor 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 of a zo c h+4usv,ytjcwuax5q+0.) capacitor holding a constant charge causes the energy stored0c c,v)jt.o4uzsy x5h u wa++q 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 stored in ty,.ttvzd (e*ihat capacito*tzy tv d(.ei,r 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 point A to p)t:5 qcmlqpv6 llb4+point B. What is the mt546)vc q+ pl bplq:lpotential 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+knfd5g dn(s sy 30e)q the potential is -50 V, to point B, where tgssqed5k fn0(3dy) n+ he 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 poten0heev wt,7)w ttial difference of 500 V. What is the kinetic ene0w)e vt ,weth7rgy 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, 3flv2o qev/ae 5b ui62is accelerated through an electric potential difference of 500 V. What i/lv3q6f aevi2 25obeus 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 falirsvv-o 3 v9x-;u 5opr dgh5-jls through a potential difference of 1200 V. What speed does it a9o-;h- dvv35 s ui5xrpro-vjgcquire?

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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 moving cjr0)t, fxtgad t16o*h d:4l d$8.5 \times 10^{18} \; electrons$?

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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 throughsgl oar 5osf, -:(+wuz a potential difference of 500 V. What is theg :s5+uwaor-(,fzols 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 carriesw854vy-um 3-s)s2kzvfr6hc h fwquj 8 a charge of 20 mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 84f5r2cf8- jq- uvs63w)ukhvzw shy m 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 po8n8kl;x l +9rd.r sfnetential difference between two parallel k srd;fl n8.ex+n8l 9rmetal 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 pr(933o.8bcerr76b wc xx ut ndarallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what i cb33r.b9wd 8xneorcxt 7r6u(s 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;*q .ranqj qv7 field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, whaq* jraqn 7vq.;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 the direction of an electric field of magnitude 3.-d sqr*g6 xl;ef 58 ldlip;8zi0 V/m. What is the change in kinetic energy x;-s zr*68p; eqillf8di d5glof 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 s+ w09ig(9xravi yw2oby 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negativer9vgs0 w9o+i y2ax(iw 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, arivvi 47x 9o; ld8j5 nzcf-/ p4glfa(:d;aaqnge connected to a 12-V battery. An electron released from rest at a location 0.10 m from the nn znf4fcl-jpd7idavg(4x iovg:; q 5 9a/;8la egative 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, separhy0o:ct 6t frz*nrp 19ated 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 distance 0.050 m from the positive plate, what is 9fnr tt0zrph6oy* :1cthe 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 tow g1/n8.g8 ( z erdivjjsbp/)itard the east. If the voltage m8e /vsijj )8d/1( n.zp irggbteasured 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 fi*,s c9shk(.uosl 5p kheld of 50 N/C directed toward the east. If the voltage measured relatil 9s*o(.k,5shku hpscve 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 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 a7 qf+eu)h 6y,u vhgteo5 vjardklid7) ,43p3 m kinetic energy (in the absen7 k)3j hpy+ hvuat 5)o,i fed6me4vgu ,7l3qrdce 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 d u6mp.3fok0yijp/ q9 abuw;;u kae-,bistance 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 emx8ni 7 z4oa4fhm/ -wstick. Find the electrical potential for the cenf4e mo a4n-8/zi7hmwxter 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),vw rz c4(jle; 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 electric potential at point (0,c4jzrvwle; ,( 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 a2 lfvc x,k1r1et (3.0 m, 0). If the potefl121vc kr ex,ntial 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, 0) and a -2.0-nC char2 t- pt7npc-syge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge ft72 pscpy-nt -rom 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 recta* 6qynef ,dde5ngle of sides a and b. What is the potential at the center of the 5nqd ,dfey*e6 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 placesflyp1q pk4ee,92eqr dz4, : i rf3xt3d in two diagonally opposite 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'19iskxeed:f424zqr3ter , 3 pyqp lf, 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, masgjib(9 wd-k/ xs $6.64 \times 10^{-27} \; kg$) 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 n0hxcf hwf412u ecessary to place three charges, each of 2.0 mC, at the corners of an euf4hxfwc1 h02 quilateral 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 platezfb(hwrvv;k3: ooy01s of a 2.0-mF capacitor when it is charged to 100 V?k y;1: vov b3rhf0(zow

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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 algk,km3 5g1sbmuznr gr0 z5. 3rea $0.50 \; m^{2}$ 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 plates are separated b1 zpg(o; ts*p019s oazs;tsuny 0.050 mm. If thsot*0 1;gpazsp1( uno 9;s stze capacitance is 17.3 pF, what 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 h;:jf/a( qsd, 6fyw kaias 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 5.0 cm. If +iqm8 frn uc+.the potential difference between the plates is 2000 V, with the top plate at the highe+ mu nfcq+r.i8r 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 ivixc60h g20bxj;fx: fs connected 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 charge flows frof 0 0xgv:xjcb6ixhf2 ;m 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 energy is stored ij4ish( 5p wf)*x r)dmsn tw )f 54rp)sjhdmx(s*ihe 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 capacitor.+dmag b, p 3s;tmw6oq3 What is the energy stored in the capacitom,p 6dt sg+3b q3aow;mr?

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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 ontopwi1sw- 9te s+ip* 9dmlm.bq( the plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in chargin9mp.i+mw-se*l b 91pw(d iqstg 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 soz:1 rc69 n ng+gl*0ixefz3bstores $2.0 \times 10^{-3} \; J$ 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 capaci5 awfb x/z7mfu7z,w s4g):, gx *chhzotor 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 concto5zf5iifo0x,u p+ v6.(k drsists 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 ofo+ bvtho)1(fnx. lpx 4 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 capacsvxhb)5py 1p2 qq r crh3:5zr6itor 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 with pllk 5vxf/-iq5t rx,9mkate 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 and becomes fully chargezi*loq c sq0*e50vjc +d. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric has a dieoi ev *+jcq*zcqs l050lectric 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 connectedm+km2h gr4c) afm pzc- -yj9:z 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 of2 -ka jgc)+4-hcpzrfyzm m9:m 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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