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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 nl/sg7ue. )r5o9 efte 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 hz a;jt74q(mb6(emc;t mdap7is 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. uk+.rj.higxb l41f ,mObject A has a net charge ogl..4fij1hu r+x ,k mbf 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 direc6l, 8 d2zm3/7m ac mj1yz1ul;izsjulxtion 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 direc8ypt4 j rh y yh7m+:.g7u 9pxrwb2a0 jyw:sdt;tion 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 k(d/ z0na0iuqsphere. 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 pote7ryi,fs sz)fzxtv;0 hs 5(1 wential difference. If the potential dhwt5)efy1x;,(z ss0 r vz7sififference is 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 ti-l ;i pdxi fs +l)an;/.yhg4ehe same potential 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 moved from point A to point B along an equipotentiag4hk 76wjr3k kl surfacwrk7 j34hkgk 6e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mu0v6 u7(v0diurvcl hkrrnp4 atz9 +0i9st 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 theh g7hfp w,0)vkj31uuf electron a7) f0v fupu1jk hhg,3ws a result of moving 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 u tggg 8*(au0 f*qm+cslnit 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 correspondgg 0e2hyvy gjm.h2*z/13 g on5gg:ieas 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 charg. xmo fl lh:7hbw)abenj3 2+5ne is 100 V. What is the absolute potential 4.0 3.no: )ejx+lb f hh2lm75 abnwm 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 disp :9 xsqfx,kf:u00n c2+0pdzrp o/ dqctance of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the 9x fpdkq 00x0d:s npzocu:f+q2 crp,/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 :flgi enn:.w1 * q)hpithe 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 poteli:*. wfgp)eni q:1hnntial 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 Vgr.:zias + *-ketusk5 when a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's cears*-u:zsi5+kg ket . nter 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 aq7cpi46x hy8n re

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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 igtaz7g a- /nrgm. +ah/s 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 capac790 xc dgr0jppitors are identical in every respect except that one has twice the plate area of the other. If th0r jp cxg0d97pe 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 x+2 s*-dijjv)zeor hk*s4uy /7aixs;m 2 .zlka capacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is the ne zsiki o+* xhx7u /s2*vdy4l 2merz)saj;-j.kw 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 f2gm*vjx*bpp6,bt; w q +znj p0j(+zqaully and then is removed. The plates are immediat*j gzq mbw x6+ap2vqnz+p ;,b*0t(jjpely pulled apart. (With the battery 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 betwut4-f+ h ,po;m a ktpyaw 9di0nx.q8l;een the plates of a given capacitor is weakened, the capacitance-w8im+xt a;o9ypp0k ;.duan,tfl4q h 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--d) acwl wqb51plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the plate-)1w 5acq dlbws 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 maintain :aht-q * 5qs1kc( s4uktwkx(red with constant voltage by a wk5 1trc(kh*sqtq4a -(:u skxbattery 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 material between the plates of a cl959mbvz+vt;/boyqof cr3 b 1apacitor1bml3z yt+ qb9fov5cbro9; /v .
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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 pl-v;tgfp-9kxe6pw22t d rczl* aced between the plates of a capacitor. What happens to the capacita2wvxc e d6kt-lp*- 9tfp;z2 rgnce?

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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 jqvw78 ah+nt( is placed between the plates of a capacitor holding a fixed charge. What happens to the electric field between the plates?jwh (8n 7q+vat

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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 fully chargedn), y9s(6vi0nr pwnem. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. n9s(wn6e y nvp)im ,r0 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 capacitance1lkoe h.9 msqjqs0k 11bxu1m 6mlrf16 of a capacitor holding a constant charge causes the energy stoo mhlk611 m. f10sr1kl jx9sub 6eq1qmred 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 t( i sjzjvw 3 ,11golmw5qqel39he energy stored in that capacitor toqs,3vi(g9zq5e ow1 lwjl m1j3

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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 pointj7ml+ z9 kn.vy B. What is the pzjl. m7+y9v nkotential 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 potentiale qt. 2c ue:7vjbc4*d w3hvbm: is -50 V, to pcb*uvtwcee v4bd .:3q: hm27 joint 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, isq *).(ekc8chtuk zq: r accelerated through an electric potential differu8 e*ck:tq cqk)z(h. rence of 500 V. 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 rest, is accelerated thr(5l2htvh8 j;i5ujp4i5qr ji wough an electric potential difference of 500 V. What is the ;th85ii 4h jjwulpv52(q5 j rispeed 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 of 1200 V. Wvhp;s q3,.xw -:voqjc kh/ye 2hat speed does it acquire;.pvqqyo3ex :vs- ,/whc 2hjk ?

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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 do7e ,ex3r a wre(o1k;oc 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 accel1w0 uv5a/,b5 grv3rnfh78bgp9tg;l;jps f mqerated through a potential difference of 500 V. What is the velocity ofq fh7,b sv/f8jrn553pglrgm;g1 avwut;9 b0p 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 acceleratmqxher1l(;qv4 x3i p(7lj3iy ed from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potentimrxe3( l1y4hxqp(;qi7 l i3vjal 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 differeulqbv / 2p6/2. 9ygaw wv:drdt+3x cnlnce between two parallel metal plates separated by 1.0 mm. What is the electric field between the plyp6+c rvg d3b/ 2q.utlvwx 2dw:/9nlaates?

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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 magvx;wv*4 d94xvrt,5 5:ouy. h 4q os0wn tokcyrnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, 54;txrv,5.w 40 9vudoctyhsy4 *wqxk o nr:ovwhat 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 direct716 hdwbq *t)rjb+xh* 9ofprp ed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a poihot w b)x qp9d16h+**pf7jbrr nt 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 magz0avocc12m ( hxb*t ppl 4f)fq:m: +oynitude 3.0 V/m. What0 lx:vma1pof:2ob f y*4(p)h+tz ccmq 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 to3wa41cfgib:h b *8 m8p pekps( a 12-V battery. An electron released from rest at a location 0.10 m from the negative p8bpgc hisf81a(*kw43mb:p e 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 connected to a 12-V battery. An ujf /p62a 3zks g4ktm3electron released from rest at a location 0.10 m from the negative plate. When the electron arrives a 3 6utafkgksz32mjp4/t 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 battery. 2yp,zguug-cibc 6pc 6,7xr) mAn electron released from rest at a location 0.10 m fu,2 6mi76c,pg b -gxupzrc) cyrom the negative plate. When the electron arrives at a distance 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. If the vm wgm8lvyue2l 9t7 9 -5dx3l)m.uhbpp oltage 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 om7et9u8dpl mm l9wlh.g2u b5- py3) xvf 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 :j75at d:-zkne iu wa)voltage mease:a- wik )dzj:n5ta7 uured 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 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 x(v- k;uv nw9abvq4w/a potential difference of 12 V, it will acquire a kinetic energy (in the absenuw-xb9 q;4(n/vv wavk ce 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 potentialza2g x6ly: pm -uh.a :nu+iq7z at a 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. +hfu/lo 0po5* .uzsdm Find the electrical potential for the center ou5*0zm/.s+ophu dolff 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 m, 0). :z+dg, eugsb.hb:v8w If the potential is taken to be zero at infinity, what is the electric potential at 8u:vbgzbs+e gw:,.h dpoint (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). If the ppii.cq2v :kne*wn6 2fw vlf+kx9+mp 8otential is taken to be zero at infinity, what is the electric potential energ*inlpmfn k 2e+p9:q2xviw vwk .+6f8c y 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 (3.0 m, 0). If the potatsxjx,z9 mi;:k0sk3 e d5 ;biential tmskii5x: je93d zs ;,xk a;b0is 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 y+h.elu(t1vqzwu c3,bm,y0 w of a rectangle of sides a and b. What is the potential at the center of the recta tyl.mwbw y0ch,1 u,qz3e+(uvngle 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.n36 d3i:g+-c dk1at bfye7om h Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and bd3agi-:efd1tcy 3mnh o+76k-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,p.8 x/pd :nncwc *urk;op*o:j 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 *yfgi:on,wd (jr7 2ajmC, at the corners of an equilateral trianra(g7, oj:n*jyf2w di gle 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 capacitor tc5u fbe5l4 (k, yfeoon)g5(z6 co/zxwhen it is charged to 100zb xelec5 45z/co) nfo( o5t(y f6ug,k 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 plg 6( lwlzly3b,d jia8(ates 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 plates are separat;k vm1 * 0eqnupfhmzo;;ka+ k+ed by 0.050 mm. If the capacitance is 17.3 pF, what npo kma; zv+;q*u+f;1he mk0kis 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 capacito m x87fx u8t,blxyv(6yr 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 p,znzps,bf+ 0o2tn ee*3n;o aslate separation of 5.0 cm. If the potential difference between the plates is 2000,nnsoft az e b*sz0o n;+e,32p 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 ismys2u x;t wg 23,a dvf8w7f3utql9cd0 connected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant fy7fc v9x ud3m wa02tlsg;23 ut8 qd,w= 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.i k3u wr7d5v0 2mhgmw/ How much energy is stored in the capacitr07kmdwig3/w 5mh2u vor?

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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 stx6p6bx/9urgp ored in the capacitpg6 b9prux/6x 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 capacitorv9mhg3u -h1g fcp1w+dhy 8 zr8 when it is connected to a 12.0-V battery.z h-p+ 8h3dw91uv8ygfhgcr m1 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 jl 7g;xihr 105z ,dbyaxc ;yt7is charged so that 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 capacitor consists of plates of areaw4f 0yvh9(qx6itsl (6an9tt q $1.5 \times 10^{-4} \; m^{2}$ 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 capacoyq k(5cznbnrv 372q,itor 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 capacijp q7)6h*xqa/l,o yybtor 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 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 e16e aqdq67d b$0.40 \; m^{2}$ 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 plate arllkq+*ss(j x -ea 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 chagmmoki*p8ex ftt-, di:;(l -p rged. 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,x(tkpfmgl ti-;*e8:dmpi -o 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 iswqan8 .vi46/ywi l i(v*l14z g5n sfpx connected to a 50-V battery and becomes fully charged. The battery is removed and a slab of wv44/psg58y6a q*( nfl1xivzi i.w ln 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 capacitor's plates after the slab is inserted?

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