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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 ay mcp6;yra+y. 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 i c k2c8tt4 f)n(pv7dabhhsf.1s 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 objectsbgyobn +5i* l0)69m;lroh iwx are insulated from their surroundings. Object A has a net charge of excess electrons. Objeh gbxow;i5bor6 )y*i9 0lml +nct 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 dik2 qx8b/l+dwj ildo1u21sx 0urection 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 direction opposite to y27l5xfavy*0pdh 6/h;h qzi wthe 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 condz4cmb3 6wug /ibyobj qf*y t ;u7*uv0)ucting 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 fromd*h/qcde /ov+xxab ,f8) ,fzj rest to a speed v by a 500 V potential diffex,fz+h j/qd*dcf8v)bx e,/oarence. If the potential 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 poi+b4 lv,eg fm.d tnam7onw +o02nts are at the 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 a) uf,f8*p iksllong an equipotential surfacus ifl8fk*) p,e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfhe2iqv bx0m6 3crk)8n ace 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 a particle carrying a charge equal to that gg lwo * 5lj7+6jff/aoon the electron as a result of moving through a potential difference o56l lo*+ jfg a7ow/fjgf 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(f*jj3v 0rw rb a unit 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 correspkd wi6gu7r ,x;uk 8y2aonds 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 2.0p09ssnkkk xm7:.c e30 mu mkf: m from a positive point charge is 100 V. What is the absolute potesmksmkupm 7 e .9 :cf0xk:3kn0ntial 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 : .bx adm5xxq*7lg5)wrzb-z ex.a xr, of 2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same point charge?d,xlr.e xwmq z*z5bx)a7x -bxrg.: 5a

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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 cen 60xb n.o :ofr:fi7qmvter of a square is 3.0 V when a charge of +Q is located at one of the square's corners. What is the a:o:f7mnb vx0r6fqo i.bsolute 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 cek:s,b,x b3modfi-om 1k/ cie(nter of a square is 3.0 V when a charge of +Q is located at o o-,:di/xfo3s(kc,bb k mmei1ne of the square's 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 taen8t x,hdvcmvt;(:*h2di v,hat 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 vb k ngy3h 6yi/lj-,mp788 wwoa

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capacitz+di8 t ;txgt16kla x.ors are identical in every respect except that one has twice the plate area of the oz ;+1tx8kl ttxga.d6 ither. 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 o;m ky/*01c mwyt4*qnhma tft:f C. If the area of the plates is doubled and the distance bet*wmt y* 4f;hn/ my:0kamct1q tween 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 capacitor fully and then is removed. The ju :jzn5qzxo;de ) q+3plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) nd3)j x5+ez:;j uoq zq 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 given capacitor i7ou2k f5y0e3j w-ktiqs weakened, the capacitance of that capf 3u 2i7-eqtj5y kwk0oacitor

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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 constaniqp c4k7 p7teux6 2-zpt voltage by a bpz72q 4xpeti7 -6pukcattery as they are pulled apart. During this process, 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 r0go/aj7-fni:s cqm t5yb , w0voltage by a battery as they are pulled apart. What happens to the strength of the electric field during this proces :y0,/-5om0q c nsfrtbg7ijaws?

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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 ma8h3-lnk o:yc0y uxkjp 2 dq-:iterial between the plates of a capacitxylk:-py80 - :o3qinh2 j dukcor.
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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 papegdg; 07otl. cer is placed between the plates of a capacitor. What happens to thdl g.t;ec 70goe 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 capaun2k*i ox -uzl6f2s:0 i:qpopcitor holding a fixed charge. What h2p6siu0u: i:plkfz *q-on2xoappens 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 u ax7 eq:ip7-;evx6ysbattery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charv eaexs;yi6 77xu:p-q ge 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 capacitor holding a constanqb9c+c3hg 5 age-js9 q5s jd-kt charge causes the energy stored in that capacitor tq35c-b-9 hq je9+ gjsgscdk5ao

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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 en vyw cmikz9+/9ergy stored in that capacitor tow9vk zm+/y ic9

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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 b67wimj, /lxzpoint B. What is the potential difference between pxz6/,lmwj7i boints 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 lupx r2sr(2s 0w1q ls,A, where the potential is -50 V, to point B, where the potential isuwqs 2lr(ls s,p2x01r +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 r2 wqa(zq+c3e accelerated through an electric potential difference of 500 V. What is the kinetic energy of t z2wq a+cr3(eqhe 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 acceler7 iqbb27dfr,, ork 8tgated through an electric potential difference of 500 V. bfto,kg8bri 72qd r7, What 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 p *ut(m/3zhm dqroton falls through a potential difference of 1200 V. Whatqhmzm(tu*d 3/ speed 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 2s5wmx ;w ,jmsy6/5 lrdsvs .0y si1bkin 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 t3g;z2gg7q;jhybg yw4 hrough a potential difference of 500 V. Whatg; b zg;7yg4yhg23wq j 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 fr9 -xlff7 -b)ek fel83t axbv3ngbi12t om rest through a potential difference, and afterward the ball is moving 1 fk-3ev2x8ge xt 3)bin9balf 7t- flbat 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,c-u;z((bf j 0q rdqpf difference between two parallel metal plates separated by 1.0 mm. What is the electric field between the plabpf qczfq(r,u( d0 j-;tes?

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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 5k /tl4kodx9m 500 V/m, is directed parallel to the +x axis. Ifxlk d5/49 kotm 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/fx14l wjxe7t ;C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltagexxwe 4jl;ft 17 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 m along the direction of an electric fieldk5 orjo2r.in ;p7ue8q of magnitude 3.0 V/m. What is the change in kine;ujei5po 8 2qok.7nrrtic 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 0o0yjr* ova 1nlfa 0hm26t,js2.20 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 aalr*fjys,12 62javnm0 ot0oh 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 rmc8kmqvg5nfl c0c9f6 ;)di* 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 ele6 c85;kmql 9vgr )in0ccdf*mfctron 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 12-V batfzo8byymy r91n0md -i*x e22ttery. An electron rel*ymbirzn my- 021dto28yfe9 x eased 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(ib gf xu4ao5a/jdg-7v 6sxk,/C directed toward the east. If the voltage measured relative to groun-x(o ad/g,akj7g x6u f4v5sbid 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 5 2.twtls+( lrv0 N/C directed toward the east. If the voltage measured relative to ground atrw+s . l(tltv2 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 differekho.f4sdj 0a03xlloop;er; , nce of 12 V, it will acquire a kinetic enl;0op 3h , r4;s.ladke0ofxojergy (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 a distanczwz j xe09h8q29dir7w e 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. Find th .h cj6+uv-bsg o;m1aoe electrical potential for the center of the megsv-uj.6 ;+cbao 1 mhoter 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, hy)m-w5*x)g 8 yapiui0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at iy) h8ixpa)-ug* wym5 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 a -2.0-nC charge is at5c4oa ikcg sfj46im*p f9b+2 h (3.0 m, 0). If the potential is taken to be zero at infinity, what is the eleci9*5apigsfmf +j 2h 4 k4bcc6otric 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) /g;aw9)c f dzmand 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 c cdazg9/ )wfm;harge 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 of a rectangle of f n,a9dc) +h9lv.huezsides a and b. What is the potential at the center of theaef z) +9u hd9nlch.v, 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 mC are placed in tagegiz8r dbri3/ 991a wo diagonally opposite cornerezbari198ad/rg3 9 gis. In the other two corners 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 (charge +i8b 3 l.khccs, ln+zt56gsp-l 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 chargesm ,2cjzhue (qx13q t2q, each of 2.0 mC, at the corners of an equilateral trian1mcu2q 3e tqz(j2xqh ,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 when it is chargeduq 4ih,wah.*e g+hjh3f6 i+rs to 100 V?s u hh h4iajrefi3+.6h* wqg,+

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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 ogmnyox) 84*g*ftd d d:f 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 w snioojdq*62i92p7m;p ; jmq plates are separated by 0.050 mm. If the capac;os jj292 ;impq 67niwp*dqom itance 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 nn;af ;yk065xwcj b ,iru0. l:bxd8bohas 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. If the potentiav vv3l 0noo*xa/xmo50 hm((( ysi x,pol difference between the plates is 2000 V, with the top plate at the higher potential, what is the electrvm(0,xaho*xpl 0n/5 o (vvoyx(mi o3sic 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 battery. 9(d4eak5(z qc lr( 5db 1ttlkdl.ssu *After the battery fully charges the capacitor, the cap(d(9t*k r ucld t l1sd.ek5z ba54(lqsacitor 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 ra5a(s+l epz:capacitor. How much energy is stored in the capar a: l(5+pezsacitor?

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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 pv*iri;1qc* v energy stored in the capacitor?*vipqi r*1cv;

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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 oitoa)* z 36n )ol9tjylf a capacitor when it is connected to a 12.0-V battery. How 9it* ))yo3j6llonzat 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 storesp+ggnm992j0 roy miqt8 zn4* r $2.0 \times 10^{-3} \; J$ 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 ,lpf 0 /e5er,xudi0lharea $1.5 \times 10^{-4} \; m^{2}$ 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 odvjm/ *,sg ;-iahh nt,f 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 plates of area (6 zp,wj45t2gb g sikq$1.5 \times 10^{-4} \; m^{2}$ 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 c b;0may+ 7wlolq/2 jinonstructed 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 o- wtq 44olzlblq(jq( *f $0.40 \; m^{2}$ 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 andu: w j1 c,;;sj3z2e n:llmfxsp becomes fully charged. The battery is removed and a: ,jmn cp;w31xluje;fl2szs : 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 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 au-zn e-gp*9hdnd 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 constz-g- pnu e*hd9ant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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