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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 o7su2cl- aek2is 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 ojb j1du86 u;p u8cn g6.tj1nnis 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 objec 1dgycmmoh0n 5e*)aq: ts are insulated from their surroundings. Object A hac0 ym1e nm 5:o*hadqg)s a net 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 direction of the eo 5xuik88s a,ylectric 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 electric fvls7-m0yxxv /ield

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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 f7u uto8hb:u9 ;i)*fyn iik*w a hollow 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 resb:f 2 4gol* mx;bwlbx7t to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will thel7*bfx42:;bwb gxl om 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 referre8d e4x u:nzv)+zn5yjbd 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 alon00k bxj3g6 puw 4q:brjg an equipotential surface.g4ub00 36pbjwk j:qx r

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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 be-(5ew xiw3g vgukrv)-c2iyd 5

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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 c.fask ,-pexouubiv3 l. 67 uwvt+,k-qarrying a charge equal to that on the electron as a result of moving through a potential difference ul.uxtk.f7,-kaq3 os,ui vp6+b-ewv 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 unit f (gqv dy/+b/jof

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspondsk 2 gokhw/ujix)m)6a39 hb6f c 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 positivebz(n)cszc/6wn5jysr k *6pc9 point charge is 100 V. What is the absolute potentialnbpsz kz)65nyc rc6jsc/w 9(* 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 alf/iyr7la zx+b 5 zb;3 negative point charge is -100 V. What is the alx +fzy/r 5az3bl;7 bibsolute 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 cen3xza qxy/5p k*fg6;-.mb keputer 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 whe kppeg.af 6 uq/x5*x byzkm;3-n 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 iez -jehe*bn9 (s located at one of the square's corners. What is the absolute potential at the square's ch* (jeen9- zbeenter 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 tn 2 jvf+4ec-en9/stxhw dq 4-vwo 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 ia09zgt5k+l nf bwq/pk; 7+czo 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 capacitors are identical intax.+yew( o1l wpy (2b every respect except that one has twice the plate area of the other. If the smaller capacitor has capac(wy2p+olye.t (x1 wb aitance 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 capacitangnz,0es 336 i jvjdc5 s04ksmlce of C. If the area of the plates is ds3kn l0ce 0s63imsj z jdv,5g4oubled and the distance between 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 parallel-plate capacit80p ;hp pnwj8p8c6xjeor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the pwhjnx0 8 6;ppp8cjep8lates 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 g)epv5dj;uki 5i lo.rqe7 dae 0x3n*e6iven capacitor is weakened, the capacitance of that cadjir kn3eel6;veu. e x*5)i p d7qo50apacitor

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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 parallq8 +ia8 5i) vax-sxbwrel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount ov8x+ri5-a b )isxw8 qaf 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 parallrw w9o lj)bz2(aw8o 4eel-plate capacitor are maintained with constant voltage by a battery as they are pu(rj4e8wlow)owa9bz 2 lled 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 . (y2iipvp wk;z47- pap(hebfplates of a capa.4pw h-p(ik ;pz abe2 yiv7(fpcitor.
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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 ,9ofz twaa*;kk4,mh;oww 3syas paper is placed between the plates of a capacitor. What happens to the capacitance?,o;ayf3s ; k*z wo94wa, wmhtk

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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(rol v97jnnv g),x e6z as paper is placed between the plates of a capacitor holding a fixed charge. nonj, glxv679v( ez)rWhat 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 connecphchk vq ,p:6ai5d+w0ted to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no cha: vqdhp,6hkwcp5ai0+rge 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 oxkp)b* 0s0jdhf a capacitor holding a constant charge causes the energy stored in d0x*0jb)p hs kthat 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 anld9kkhnh*83fwfb5 0onr al:(s0 xy(cross a given capacitor causes the energy stored in that capf8 sn*(h5 lhk0 fo rb:kn0d9 nlwy3x(aacitor 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 1gax .ln6bh 2p5 i(9*hfvycd9z0 C of charge from point A to point B. What is the potential diffez*6g(9 fh b 9.xnh 2iay5pcvldrence 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 1/7wn+i pign xs,z*vwA, where the potential is -50 V, to pointx ig ,+i7wznwp/ *1nvs 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 an electric potential diff-5pwx-scv2n3+(r;gvbj wt zq* wy0 ooerence of 50 o3gzj*wvs -+05 ;c 2pwr-vn qbwx(yot0 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 rued jr6g lo i,lu3h:9ys:w5;at rest, is accelerated through an electric potential difference of 500 V. What is the speed of te3ruyoh,6l ijr9;s:lw 5dg: uhe 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. v e2- c(onz6ab What speed does it acquir- o26(vbcza ene?

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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 d-yi *,:vp ytmf5 6h7nafzu l7to 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 po77a ohb;q1ztj3dv.k atential difference of 500 V. What is the velocity of the electron af3oa vd.;z7kt 7hqa1j bterward?

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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 chargv., k2cvmj8l ke of 20 mC. The object is accelerated from rest through a potential difference, and afterward the ball is movikl.j8cv m ,kv2ng 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 electrical potential difference bz47hl simm y55etween two parallel metal plates sly4z 5s5ih7 mmeparated 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 dir+z**crdg1j kw ected parallel to the +x axis. Ifwdr+1jc g*z *k 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 field of 50 N/C directed toward 41 ,1iqflkajuj)ig)x the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a a1 ,4ui1xgf)ilkjj)q 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 madvy)s mhd; ;b fns *(7.hfr/dr(zk(sagnitude 3.0 V/m. 7(zdm n.a* rr ky;dhss;s( h(fdbfv/)What 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, areoq 9/+n4aw5pg4q ykz v connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron5n44okq+ 9 p vgayq/zw 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 ajpy3,5 f;, sf 5/ vw.ngjfxjcj 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distanc,c5,35jxf;gyj jfvfns w/ j .pe 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 awlw /-so4 )(btbukye* 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a y w4e bo blws-k/)*(tudistance 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 tyj e,*-i1yqvioward the east. If the voltage measured relative to ground at a given point in the field is 81*,ye vjqii-y 0 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 elecz 2 xrnz)txm 11vrjj8zey6: 0gtric field of 50 N/C directed toward the east. If the voltage measuredr n 0j1v)2xytezm8 xr61:zg zj 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 a potential difference of 12 V, it will acquprw9nj 1,x)nn,+phn-j -mojpire a kinetic energy (in the absence of friction) m,rn ,p9)p nopj-xwj n1-jnh+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 a:( t(ha+dkbc yt 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 ends7b 8xh6w ckg.a of a meter stick. Find the electrical potenti6whcx78ak.bg al 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) anml n)i32.l)k lq0tjwnd 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 potenti).k3lm0jt)2wi l nn qlal 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 ak i/50mr cnz tr,o)cs6o2 n5ok -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the mko/ , k )crzno c5rns065iot2electric 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 qh1+ )luv pwcd *ct*myj,dqd(h y.-m2-2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work requw- *u ( q,1pqmv2.dhcty)c dlyhjdm+* ired 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 g6 ndh:e*lcjld xp))gj, +lo8rc r56 mcharge +q are placed at the corners of a rectangle of sidesjl 6,j6l8p nx:od )rchrmeg dcg+*5l ) a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, and b = 4.0 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 3snfl5)pxmy -mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0ys5 )fxpln-3m 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 nt6: r:7 .men w0vqmmq+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 necessas1re ymca, m6, 0 9bfnxdc4p(mry to place three charges, each of 2.0 mC, at the corners of an equilateral triangle of sxdefr9cbcn4,mm yp1,6(0a ms ide 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 platelzx,5b+ejw(x 4t2 6x t eowc7:9lryegs of a 2.0-mF capacitor when it is charged to 1009e(w2ee byxr:tl5wocl tx 67jzx+4 ,g 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 plates of (8aam(z) oo 1 mawq5fcarea $0.50 \; m^{2}$ 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 sjfl. kxw,v:,oto+ d ,78 llxmfilled with air, and the plates are separated by 0.050 mm. If the capacitance+mdwkx7.,l,8,l tfvs: joo lx 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 hh4,mo9 62 tej*jqaulvas 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 cap,.c+ql( zuxohacitor has a plate separation of 5.0 cm. If the potential difference between the uoxlzq+c(. ,h plates is 2000 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 is conn3 x7xb(1av4 hc6 rrm:uurow7v ected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How mucwa rorr41 6c:b x7xhu (vum7v3h 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. Howrb *74exgd2gn much energy is stored in the ca 2gexn*4g7rbd 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 stored in the capac, u/6sbjels*e sej 6s ,*leub/itor?

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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 whetr) 5z(7m qatpn it is connected to a 12.0-V battery. How much work w5) maqz (pr7ttas 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 sosczz1d;eio cg6x/ 5 w9 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 capaciq /0ovapa/b2x tor 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 plateod*; pvz;jmw- e59v8sfjo( xes 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 consd uj78,j8 umhiists 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 isoidnd 05*n:kt j.br+ t 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 with6ofq 9v4wslw,dn9of2 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 batf5*yxg / a5kqdtery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills th5fq /kx*5ygda e space between the plates 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 to a 50-V battery and becomes fully chargedn)m9b9bs vvb b/ -t3.qlxgt ;q. 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 /bl99 g;qm .-nqb)t 3bvvbtxscapacitor's plates after the slab is inserted?

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