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习题练习：Physics Unit17: Electric Potential
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 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 nlf::cjat qux3h2 )e/x bdb qix3x2u, f mhk0((ot 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 u *d5adan+:jf7ia tjydr .se 1b- :m7ris 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 in4gyrgnn tj7v d*;9 9gxsulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher 9t*dg y9gr;7xvg n4jnpotential?

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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 u u6.c/fs x 3di(;eforof 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 opposite to the elect43;bjh aijf (+eg1ae6e 9inj fric 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 i aoox x0):9 dsvd; ;b -ck18,uzrakctsphere. 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 9t:mk siuar h 0g9/e n)qn6fs5by a 500 V potential difference. If the potentgn)me 0 uqi/ nts9:k69rh sa5fial difference 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 the s daju 1yiwy6lt7z/6 4pame 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 equipotenku pe9;qqcr(*dh*jguwv /h/ xz0 y o0/tial surfaceqqzuog ukx/;v/e(hcp/* djw0 9y*r h0.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfacetg l h(jk74(ie 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 mb,v: 7bs.miwzl8 at hc(3 t/ra particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred z, avb /(hcms: 8w.l btm3it7rto 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 unitjct o.+6 mehxla58lz 8 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 correspq4 lqlon/ ;1wxv: v++qztfj9ionds 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 po/e g c7fud00obsitive point charge is 100 V. What is the absolute potential 4.0 m away from the same point chargec fdeb0/ogu70 ?

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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 2ai viw-wn h3ijv - 8a0mf/ 3ok).pjbm+.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the sameow.- mha)i ijmbpj/ a0v3wvk-i3 n+8f 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 centesv y8 dzm25+fir of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolutd i2zv s8+5ymfe 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 square is 3.0 V when a charge /xm(93b9)3j)ms 6h krem .ceq ouft kaof +Q is located at one of the square's corners. What is the absolute potential at 3sm.eco3x jmk)bmt9 q/( uf)ak96rhethe 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 c uearhown7p.)(6a(se onsist 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 im1xus,*y( t)lg )cpge 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 idep1u(u z -a01*yiu sajp46m pcfntical in every respect except that one has twice the plate a fp4z10 ujp1 -s(*cpuyuami6area 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 capn 7:p kfse0v-* v2nxvjacitance of C. If the area of the plates is doubled and the distance between the plates is hp jnxsk2 7-ve0*fvv :nalved, 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 parallelh;f(4:z+hxpmpt/dorvw(yw m-ql k5 . -plate capacitor fully and then is removed. The plates are immediately pulled apart. (With t wd(pk;.hprymlzxo-:t(5q +m h w f4/vhe 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 between the plates dwb- n1i lj8u2of a given capacitor is weakened, the capacitance 81jw udnb -li2of 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 parallgcq6r dqufw 4k+6 2:dvel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on th4vdr6:2ck6dg +u fwqqe 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 constant voltage bya;wvoa5l ;w :u 4/6 acjb5uyia a battery as they are pulled apart. What happens to the strength of the electric fieljyuav54:;lc;wa5 a6/ wboa uid 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 cmb/o: /cl;cvwi (yp .wapacitor.bml:/p; o/(vwc. cy iw
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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 papl:3mr q;o.xjcf -t15t fln(xter is placed between the plates of a capacitor. What happens to the capat;tx:f5fxr.3(mqj l- tnoc1 lcitance?

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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 capaci,lowtcriz ,-;tor holding a fixed,z-; wcr, itol 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 capacia:f0w u -no9n :7vjkzitor is connected to a battery and becomes fully charged. The capacitor is then disconnected, and the separation bet0: zi:nf-7awn uv okj9ween 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:m3y/ p5oowm) u9zx wd capacitor holding a constant charge causes the energy stored iw5d:o 39um xpyz)owm/n 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 gbf,2*v3o q4t0. vzle9dnomu given capacitor causes the energy stored in that cavf u nt49 lo02*ebvdz gqm.,o3pacitor 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 point B. l j-3w+,ke ngtWhat is the potential difference between points A anl-tw n3ge+kj, d 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 thexx: 8 tl2 vxx6ads8kk* potential is -50 V, to point B, where the potential i sx2 a8vxk6t lx:8*kxds +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 resta/pn3,fjf-u3d /gs ai , is accelerated through an electric potential difference of 500 V. What is the kinetic energy ofsi ,fanf3-/gd/ jp a3u 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 potential diffe 7fowtcf 3+e/urence of 500 V. What is th+uocf3t / 7wefe 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 falls through an g;p;3y(w qgu potential difference of 1200 V. What spq;n;y w3gg( pueed 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 movingw.),hffyi0*z iat. ie $8.5 \times 10^{18} \; electrons$?

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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 potent(0 s1v jwc7axtial difference of 500 V. Wax 1(w7vc0t jshat is the 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 carries a charge of 20 mC. The object is accelerated from rest th4x ld1d+0o fd,lqamf. rough a potential difference, anf1l., m4q0 +oddxdlf ad 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 e7zkwv;q *k1mu3hjn;gf3h f5 plectrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric fhk7nk*mu3p3 1j;q5hvw;gz ff ield 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 directedv.5d;zlm lh( 3z / d2k,rzbkfi parallel to the +x azr vdk32f ,kh;5l(mzldi/ .zb xis. If 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 electrbc t2h-l pgp4djm/ k;8ic field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of thatkhbcjt8mp- l; p4gd2 / 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 fpj , xz qr0sx91t1bvs2ield of magnitude 3.0 V/m. What is the change in kinetic energy of th9r xxs,1qv bts 1p02jze 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 connecti t8jb (jzv)p2x)+3czy2h(t,tu xpyq 92f rbred 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 1.50 m from the positi+zy t 9jxxzqyc8pph (t2 2(tibj,2)r)fu b3 rvve 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, arusq q:/guj*g 9 lhi2;we connected to a 12-V battery. An electron released from rest at a ug*2sj;u/ hwlgq : 9qilocation 0.10 m from the negative 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, sel0wefam u2 lh+t3p)i4 parated 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 the spath2im0)lle4f3 +w upeed 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 tyd(cpli(*tas*+ d -tbhe voltage measured relative to ground at a giv+is -cpad*blt (t*d y(en 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. 69emouu1 ox6o If the voltage measured relative to ground at a given point in the field is 80 V,u 669ouomo ex1 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 potentihuojf /pr il8phm4;d/f ;o35d al difference of 12 V, it will acquire a kinetic energy (in the / 3ld;ifr / ;fdpm58hh4po uojabsence 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 distance of jq6;py*ja d2u $5.0 \times 10^{-10} \; m$ 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 avx:gulnl7a,c ,0 ub2v*g2wy lre at the ends of a meter stick. Find the electrical potential for the center of thevy0, 2lbcga*l7nulg, w 2xu:v 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 iswyvi/j3z1o 2 h at (3.0 m, 0). If the potential is taken to be zero at infinity, what o iv /whzj2y31is 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) gx;,h c oqh;+gvl+pu :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 1.0-nC charge at point (+,p:o h; +xlgg qv;chu0, 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 1 egdxlad00 6xbb6o4lat (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 from infinity to poid61 bl eg00axl 6xb4dont (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 +yyikl l z/+8/z9n zz;aq are placed at the corners of a rectangle of sides a and b. What is the potential at the center /az ykl8 yz;i 9z+n/lzof 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.h:0oilz( z ya: ezp)yl31km3 e Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed cha3y :eil)eymzz3kh p:lz (1o0arges 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 (charge +2e* av 8mor;4kuxkf0;z:x ie1wl , 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 chan )c wy05u,cqgf(jh3p rges, each of 2.0 mC, at the corners of an equilateral triangle(ufc,5cq hyn gp0)3wj 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 n 1 p/4u9w rrkd .i:)coeya4zdcapacitor when it is charged to 100 r uzer 94d1 ioa cyd./:kpn4)wV?

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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 plates87d8vmmcjszw4 yoe;pp 61 0mv 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 ar.,9yg1 xkux r7lg**hlk5wqfwe separated by 0.050 muwy5,g.x*qgklx 7w hk1 * 9lfrm. If the 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 capacit 83 ygl6 ejeiuu./x7w n0cxgy1or 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 seb-7xcpfxyq(yq7b )9cparation of 5.0 cm. If the potential difference between the plates is 2000 V,p 9cb7cfxq )b-(xyy7 q 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 connected across a 100-V battqr9e.8bqww9 z q.8z gxery. After the battery fully chargebexzz8q 9qr89. q.gw ws the capacitor, the capacitor is immersed 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 capacitor. How much energy is stored i 4d.-3cwzzcx wn the capacitor43wxw zd .ccz-?

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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 enerue8)rv(3- :i ypmfd. zihh- jcgy stored in the capacitor?(uchmj hfe:.3rzv)-py- i 8di

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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 f,/jd,f )yond glows onto the plates of a capacitor when it is connected to a 12 d,,/) fdjgyno.0-V battery. 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 that it stores 3x bui::lc*f jhxi,d3$2.0 \times 10^{-3} \; J$ 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 capacitorek/ z aq41*akl-r5qwd 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 plates of area .yle)i1v j:*t tt1lwo $1.5 \times 10^{-4} \; m^{2}$ 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 of areat:.mdkn9 zku 4 $1.5 \times 10^{-4} \; m^{2}$ 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 constr 4n kd:uv//fbvp7vb8iucted 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 plate area of z k + w 10pvsm0d*irsgm)3ol8k$0.40 \; m^{2}$ 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 qe8:i15p najrwlv 4 7yand 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 capacitance of the capacitor after the slab is qye154l:v j 7riaw8np 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*wjzd pis)v.4 connected 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 of 5.0, what is the voltage across the capacitor's plates after the slab is inserted*p4ivz sj .w)d?

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