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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 v f0om+ix-0 bm5vev*ua 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 i1 1mnkp1 (lx-i0cnueis 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 surroundvx ,dm:t ajt3u 74f;cdings. Object A has a net charge of e v3tam dtfxdj,c: u;74xcess 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 txd07 a uwp+w(dub5mhbd+5) 9t xphhm6he 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 to the ef/w .cw(v(gj d/e+dok lectric 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 conducrk1 ws5c1nx2zy,d 1xotm9 bu; ting 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 relv 0:bh4k2y dvob2/t tst to a speed v by a 500 V potential difference. If the potential difference is changed to 2b0b dyh/:ltk42o2 v tv000 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 pvp tjt5d14a vn4f7wejh( y(u4otential 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 move:zx ws+a)h:cf r;ht7p d from point A to point B along an equipotential surfacew s7r f;+hza :x)tp:hc.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential sur tytxqcc2m e2;c,ur78face 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 4:ulapwdj w3.g88ll*pc gc0pa particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred to as8.c8 llpu*:g a wpjg30cd p4wl

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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 un.iyelt(b9, bj 1 xlh5bit 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 1/cyhv;wu)l/ot )gxaz 4k q9hto

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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 haqpt;np2c/l * p4 pc(a84mmtcharge is 100 V. What is (nm 4a 4pcpp28q/* mttlhca ;pthe 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 of 2.0 m from a negative poir2/.a5gh; o svywo 9e .;peowint charge is -100 V. What is the absolute potential 4.0 m away from the same peeo.ohp;wrw; .os9 iv5 /a2gyoint 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 aa n,aqi/6t yp 0wbszf;f(n d);t 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 6,z0)n;(aayif wt /;p sdfnqb 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 ih w26d-t8 1gw m0taq2x 28otznvjiim)s located at one of the square'smw028am nqvt8gxtij i-z1 ohd6w t2)2 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 are5uxlcyz .gr6,

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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 i0-z 08bf7s 9y alnfqnzs 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 idenr/n(r d.cx gs7tical in every respect except that one has twice the plate areaxr(/7dcn .sgr of the other. 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 the2 wp)f 3xveue) area of the plates is doubled and the distance between the plates iuex p32v we)f)s 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-;gtd dtm/qmv (.w 0h9splate 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.) Whattd(g dwts .q9v;0hmm / 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 weakened, , qus7omh4kc e;8am 33hug8d +8tapfxthe capacitance of that emtd+cp4a oa37fug3 h8xks;m u 8qh8, 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 maintained with constant kn vu 0zlt;y;ap)r87s. we+bevoltage by a battery as they are pulled apart. During this pl n.ws0r8vea y)tubk;p e+; 7zrocess, 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 jwk 8g+n bc44at:a,ipare maintained with constant voltage by a battery as they are pulled apart. What happen tb: a i4wn8pgc4+jak,s 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 foi vun :z:o wy/sk0:5vkr adding a dielectric material between the plates of a capavskziwn :v/::uo0y k 5citor.
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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 a capacitwg97x tu ) mo4-si*csdor. What happe9uit s )o4swc-dgmx7*ns 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 is placed between the plates of a cap:6/ke9givuf sdn.j .iacitor holding a fixed chargge 9f :v /sijdn6uki..e. 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 beco t)i f1xfs96duicus37mes fully charged. The capacitor is then disconnected, and the separation between the plat 7dict )us9siff36u1x es 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 capac/++ wffu 8wfdjitor holding a constant charge causes the energy stored in ud8wf/+ f+f jwthat 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 caustpy 9/x5wd,k ves the energy stored in that capacitor tt/vp x9w, 5dkyo

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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 ofgok48jkyriaf2 lh,p : n+3l5w charge from point A to point B. What is the potential difference between 5+lhl ga34 yik:kfo ,nrjpw28points 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 f:y.n -f z1lwtc+rxti) f3a s y+2crrb6rom point A, where the potential is -50 V, to i:ylz)2c-ty x3cff1 rr s6+.tr +bnawpoint 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 accelerated through j0ro0 /wweqfw 7 r,6euan electric potential difference of 500 V. What is the kinetic energy /o we r7e00w6r wqf,juof 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 potentid2a7eiqk5i u+2 -6lo+p j.tl hhwhja /al difference of 500 V. What is the speeh/+iul 76lkhpja 5 wdeq j2t+2i.-ahod 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;;r7 sz5izay e/uvgl 6)td:n r potential difference of 1200 V. What speed does it acq )a5nv/ gzsr 7eiyu6t:;zlr ;duire?

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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.lm74m;/ s fmgg0 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 electroew*,hn8cm;1 gzn;f qvv io01x n is accelerated through a potential difference of 500 V. What is the velocity of the elech nm,oz8ngvw;qi1xe0 ; *v1fctron 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 2z6xwk**l* szwcd.idcfj k3;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 magnitude of the potential difference d2c*x.wkiz *;3 6z clwsj*dfk?

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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 pote -8sxaw ga;x9dmm8z9 rk7k8lu ntial difference between two parallel meus-zd 8mr 87l8akkxx9ma9 w; gtal 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/m5jb7u9vm c pc:, 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 umj:cp c5vb97 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 ih 3m4eyo9nxx+a b/)olcyp 20of 50 N/C directed toward the east. If the voltage9pe4n3yc bxoy)x l+0haim/ 2o measured relative 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 khe hhsrqb38 0t/,qe,0p wez 4m along the direction of an electric field of magnitude 3.0 V/m. Wha p eq0 be4hrhks,80 ,wz/q3teht is 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, separated by 0.20 m, are connected tovsjt:;;-c fbb/i8x iadxh ) 8d 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 is the potential differei/ cdsb:j;i tvx 8ba8)dx-hf;nce 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 0758cf ,ndlaqmt )d 9ar.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 ef8) ml7,n qtadr5cd9 alectron 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 k *h;sfe3kui 212-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 of3k *;e2ih skuf 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 t7ev v.+zgij,toward the east. If the voltaz7.jive,+ gtvge 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 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 the east. If the vwjwl ooon rrq, j l7028u;:(dwk4h )lvoltage measured relative toql rwo8o2) ,lvdjwkl 04ou7:rw(h;n j 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 diffepd , :r ass8ohakg) slm7*l*/xrence of 12 V, it will acquire a kinetic enerx*mso:k7 a8hss/pa ,lg lr d)*gy (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 p6j dt,qxg./fa 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 nu5f ycq2 ld61at the ends of a meter stick. Find the electrical potentl5fd21n uyc q6ial 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 -2.0-nC charge is at (3e) 6nkzg2j3z,ij3ml w.0 m, 0). If the potential is taken 3jnw)mezi 3 ,zl 2jk6gto be zero at infinity, 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)fbqu r)( z0 tigaq*jku85b-v( 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 energy of a 1. rzqu (gqf*0b(u)5jbi-8k tav0-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 (3.0 m, 0). I)c -lfp*;idw yf the potential is taken to be zero at infinity,cd f-;w)* yipl 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 corne.s-t3/eryib8vo a6 ttrs of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, and b = 4.3 r6-ose bttatvi.8y /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 diagonall 89x)/.efj sxcbkr9o*qr gbf/y opposite corners. In the other two corn/.bx sf/ xc8eb g)rr* 9oq9kfjers 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 (ch hg/ 70btk2nxjarge +2e, 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 charges, each of 2.0 mC, wbjuzt )wl7r / he / +kgc*t(v59xf6exat the corne5wc(ertjfw7 l*tb9u z/)hxvx/ge +6 krs of an equilateral 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 capg gvzc6;frak lpjy fk/7ma91n 31,pf(4o;le cacitor when it is charged to 106;c3ry4vk 7 n1l1,mzpjglfpg9/c(fa eoa kf ;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 px bl; cs7su6b9lates 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, a.rcrnk9 c :kh76p7bl ynd the plates are separated by 0.050 mm. If tb79ykc6ncr h7k.lrp : he 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 capacitorqg)zc7e zo(oi)c: d .i 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 plate separation of 5.0 cm. I kjma533m.9czkor uz 1f the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the elect3uc. 1arkm5o3zmjk9 z ric 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 acroowi gkd;qb7, .mq8 5t,bm wnm,ss a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric cooqtqnwdb, . wg85b7m ;,, mmkinstant = 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 capacitor. How s n:oik(4p2zo much energy is stored in the csn zi:o4o(k2 papacitor?

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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 capa5ea 6k5rp w2vfcitor. What is the energy stored in the capacitoraew25r fkp6 5v?

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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 bs* u(8qk f6fk1hg.vwcapacitor when it is connected to a 12.0-V battery*bkv (qfg. 6 1k8hwsfu. 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 is charged so th2-ie5s nx7t;sla 0 srzat 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 capacitq7 t;2yycj d-for 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 consis-r s)u n )-wk8vx44uxx5 lgpubts 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 ofcg0ws 40;grp0rew v:r 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 is constructed with plate area of :hxo.sgie,+; 4f kgtwip 6xm .$0.40 \; m^{2}$ 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 pla5:1 guiz ,xuc)9krk/g frwv5 tte 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 connecte i1- mb/sk8gmv.pc 3q3y:ucgld 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 platsg.mc :b/g33ck1 puvy il-8qmes 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 to3-tbejkra uu;)r0j /.eajv:k 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 dielectricj/k- 3 .; uraberv0keuajj):t has a dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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