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习题练习：Physics Unit17: Electric Potential
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 作者: admin  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 匿名未登录  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 a px: (z4;jpqbe n f3)kvvector?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulom2+ ubg -eox)klb is 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.38,gel0 s vp p+r(azy(v)kzus Object A has a net charge of excess electrons. Object B is grounded. Which opazrulvs szgy, kp(e08v3 (+) bject 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 .d6 ( /7gusl pd;d+w+*krzqe wddp*taof 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 oppw2 (; isg5sz f) kwl+ab8j+cltosite 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 b y6.pn i8hu0cemvd;1 on 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 rest tokoe/s k(5dqvi nl:1 c9 a speed v by a 500 V potential difference. If the potev /:ilk(nsko15 d9c qential 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 same potential is referreh.l8wf .uzy x1gdk *m1d 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 p i.b- lewh91vjoint A to point B along an equipotential surface1eh9jw bvli-..

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface ;h4jq hi 7,ovimust 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 c 5 lyr wg+a:v3bs0p4xy:o/saqarrying a charge equal to that on the electron as a result of moving through a potential difference of yas+3qsb xlyr :vp4o 5wg:/0a 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 bm-)lm0r e2cbof

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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 e:2 e0/2qb9p z jd wlzt2s+zsxto

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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 f(wu+yb7ye q *distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the(+uby yq7e*wf 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 negatiyg-yzb ++qdov i1c) /b67:a4asx ivw dve point charge is -100 V. What is the absolute potential 4qi-zvcaxoy+d/ 4 dg7b wi+y6 :bs)1av.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 squa,gu jfhi (-4u;r;bqw r e,(qm2esue.xre 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 when each of the other corners is als ih msq uee -uj ;wr,fq(2,.r4(eu;gbxo 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/svjr8 7x+z/ sk pkrs. is located at one of the square's corners. What is the absolspj+kkrs.s87/v z x r/ute 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 alw+cv t3 0xjv7b0wa3fd says consist 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 a+eg r;r23oehw

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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 ev8f hmyg*kl6(kery respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capacitanmy6fkl8( k g*hce

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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. 3 uu-zz a0n9ufIf the area of the plates is doubled and the distance betweu3za9ufn0u- zen 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-pp jxb h;)ypd31late capacitor fully and then is removed. The plates are immediately pulled apart. (With b xp );3yh1pjdthe 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 fieldwg- - ik1,+( ivpcikak between the plates of a given capacitor is weakened, the capacitance of that capac-giicw kvk,k-( ap1i+ itor

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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 ckz7 hg+ u.b0k02-txoybw rzf5apacitor are maintained with constant voltage by a battery as they are pulled apart. During this progkrz.x0 2wk5hb 7y+uz-t0f bocess, 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 are maintained with constant vwvsz u:,uh4: 2ik /sv0nemym )oltage by a battery as they are pulled apartu m0ns,ksuh 4:ey imz /:vv)w2. 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 betweenht1 nd3 -td3c p+kkx1f the plates of a capad + 3tpk3xd1c-hnkf1tcitor.
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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 betwejn ji+ tbo-57ven the plates of a capacitor. What hap5jbj n+vo7i t-pens 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 capac ulilpjn sn8x 8ct6j5l51);h kitor holding a fixed charge. What happens to the elehplncu) j 5815t6kx 8j;l inslctric 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 rs3 cc0 o7nk7ebecomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. The energy stored in t0ek3nocr 7sc7 his 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 capacze2 i 7)i4k l9aod;tdnitor holding a constant charge causes the energy stored in that cadli9z t;7)2 eanikd4opacitor 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 stp1g x+ ij pm8wzum +81.;x sfal,fqkb,ored in that capacitor gl 8mx i1ufxj+,m8 s;z .wabqk1p,+fp 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. Whajpou +2.ktlkog d/nqz*n64q 924 i zmht is the potential d* tjd oniz4znp2khk6/g94 m ql.q+u o2ifference 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 movi;k+e uk. 1+gepg3 iy7d 7selq9ne 9hudng an electron from point A, where the potential is -50 V, to podley1.k+qh9 p ;3g9gi deu+ 7es ke7nuint 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, -(f(d gikr altzg y:9-is accelerated through an electric potential difference of 500 V. What is the kinelt:(i-zgg9f (rdyk- atic 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,b2-ul63c6e x8 g vqd i.*bgu*ej;b pkq is accelerated through an electric potential difference of 500 V. Whdbu2 civ j *egebu-qp; *3g lq68.bx6kat is 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 falls through a potential dif:*);5y qjvltz;8pm uumqlh(-slsfz / ference of 1200 V. What speedmzz lm5 (jsfyl/ lqqut ) v8;;hsup*-: 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 mo,e2w; /oefp, 4-upj djmmlm 6rwd+0gfving $8.5 \times 10^{18} \; electrons$?

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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 poteuj7a.0rz *s9 9fr jbwppey)k ;ntial difference of 500 V. What is the velocity of the electron ae ruyj9*.zr 90k sa)j;7 pbpfwfterward?

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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 r724mypp):ablv:b hse0- z sukest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude -b v 72mua:)0y:lpp4 eksbhzsof 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 d 3 xc1xajxlgr/v mn;i 0:2i4irv,azy 6ifference between two parallel metal plate:0/,xizracli2yx4 a ijrxnmvv g 63;1s 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 50jzon* /;70mytpq7dho. x po e.0 V/m, is directed parallel to the +x axis. If the potential at x =qy 0xoptnpoh mj7z /..7e *od; 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 the east. If the vol;f ;cy vyxp.h*s0f nthk:s6n+tage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of thatk;v:+; hsh t* xysnn cf6y0f.p 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 elect:z (tzpb ;67.bevaa n /pt.9nrgjgkh)ric field of magnitude 3.0 V/m. What is the change in kinetic energy of the prop6ng.tk9j/h zvg(7: pa e; abtnb.r)zton?

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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 to a 12-Vj.t/rh.lu+ ldjl)a 0z battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a dis l.dah.j/z r+tl0j)ultance 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 ,1(zggui 1 v2p;lno dmto a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. Whezo lvpugn;( d,mg21i1 n 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, separated by 0.27hd zi yl8-)xe0 m, are connected to a 12-V battery. An e78 -xyih) zdlelectron 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 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 ea.-,8b-l;7n c u d6f pnawbjuplst. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage at a point 1.0 m dif 8. ,anduuw-pp;ln76cbb j -lrectly 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 0,hybho;u66 (m3 qqlr,a ekkq the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the vo(;q6ur mlo y6hqb0,ek,q3akh ltage 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 thros+* ldv 0de6 nz0mcf1j q02sujugh a potential difference of 12 V, it will acquire a kinetic energy (i nc6s0 0d*du2l+1f zvjemjsq0n 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 a distanc/+ v q83jv 6zprbmy ra1wb4p5me 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 areza z/;dz**rd 0yd brgwi.ygu9 m24gv3 at the ends of a meter stick. Find the electrical potential for the center d/dz wgz 9gimvr;gru4*3ya.2*ybd z0of 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 -2.0u* / *ze5c,zvw.k1hvgn3fs trcgxe. *-nC charge is at (3.0 m, 0). If the potential is taken to be zet.rfggz x czw hv/k**1ncu3.5v*,esero 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) and )7np y opntq03a -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 (0, 4.0p0pn )3o7ny qt 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) anklh5 n1dp : bntbmi07cnqoxhw* f3018d a -2.0-nC charge 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 from infinity to pointbk*cn 5mhx0bon3 i1fdt 8:h1w 7qnl 0p (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 +ef2 lrz*fb5v .pnb2g( q are placed at the corners of a rectangle of sides a and b. What is the potential at tf* 2v 5 bnbg2l(rpez.fhe 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 u5gjhip/c(2mk.f 8r sof +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of s/fmh5cpu r .(kj ig28+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, 1n1kxrvqo o,0yj4c 9rk t56kimass $6.64 \times 10^{-27} \; kg$) 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 ns.q20dd rxa:7 )m*sjj3bpx in ecessary to place three charges, each of 2.0 mC, at the corners of an equilateral triangle of side 2.0 )qd n:rjj3s saxx.*b mp 2d7i0cm?

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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 when it7ovv+i3 lva v) is charged to 10)l 37via+vvov0 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 cap; dt2+e,h;greeg, bqj acitor has plates 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 separmw os3giwdp01 7fc o74ated by 0.050 mm. If the ca0o31f7iogc74 wmpd swpacitance 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 has plates of ar7dlcxz)n4et/)yc2 zkj fj v7 0ea $0.20 \; m^{2}$ 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 the pote t ;ntf( tc;rq845ei*uifwf4antial difference between the plates is 2000 V, with the top plate at the highe ; c4q(uttaf;*in r48ie5ftfw r 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 balc7r(rmxf w (*m:*g fe+1h8-az ecmrsttery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constan l- csfrecfm17:8+mhe(gw** xarmz(rt = 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 placedvezdg*ma9c23 y0 fi0j on a 15 mF capacitor. How much energy is stored in the capgj*mi09yzec0df 32 avacitor?

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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 caje(l jx0e3yw rj /odz3e- .mq5pacitor 3w0xzj5 .yeqrdejjoe(/ m-l 3?

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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 when it is con4akdf/2 iwa2s sko5*v)x 6rsrnected to a 12.0-V battery. How much work was done in chargingvas i xs52kk62) rds /w4o*fra 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*-uws 7fa os102v6 0z hryofly 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 plateyk/q k- xob4s8jh9eyd ut,*6 e n 4(rybmk5-nks 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 iym *q(et 7boav:-l6s*wet q*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 plates9he6vuhwu6 gtr3ih 1 /g*j(hj 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 capacitof;9q+qgg yoo0 r 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 plate are:wz 07vcl dqb;a 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 cob4 3u+p qj)aun23f:y p ox)lcmnnected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills t yq ):+fnb3 l3pmux2pa)ocju4he 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 76+ hsf(.hp*x sw:dabhll (nqbattery and becomes fully charged. The battery is removed and a slab olp.f(qnsa*w hslhd7 6+:h x(bf 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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