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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 followi4vt6p ,a*htd*t5 jxmg ng is 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 isfz v. objz:sn0fx ):-b 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 insulaf+qyi hj/xv-7 ted from their surroundings. Object A has a net charge o/qyhfx- 7vi+jf 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 dir2.xi)amk4wq mrox 4 y 7vvv,lv r1;u4lection 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 opilg *1* sg r)9qeblovu-*0 piyposite 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 conductzf md+,5 wb hcv; f1+mf,lrw0fing 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 to a speed v ,xovyc dob827 by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new sp xo2yvoc8 db,7eed 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 aarno1*ju9sfto i 7,y8t 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 Btmrn:j2z8n84ct 9 p j;ry.kkf along an equipotential surfack8rjtn:; mrjt9. 2 4f8c pzkyne.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must7/ or lf*an0i3 hifns; 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 twq 3nbesbjn4ti) ):nn/1 5wkd,0p2dxw ovlw ;he electron as a result of moving throug5i;nxnd : ovwwwdb )n )1tn3lsqp4we0b 2,j/kh 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 is6jw)kf;u2y1r3s bf ai 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 corresponds ki8 eepipi(z8dl8/y6 ay gq+8to

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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 charge isr mk1pve8-jm;83 es5 qviot;s 100 V. What is the absolute potential 4.0 m away from the stmpjs-ev5ki oms;qe1v;8 83rame 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 frog ss4on m-flqfa6.s ,.m a negative point charge is -100 V. What is t g4-m s,fl.fsnas.o6qhe absolute 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 ce9al5-+ t8c thz w,dbo*4h fkuxnter 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 when each of the other corners is also filled with a charge of +Q?k5 -a9hdt z*ol cxftu +4wb8,h

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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 c5etl + nv: jzdl47l8dtharge of +Q is located at one of the square's corne8 +4dn:eljztd5 7tll vrs. 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 charge8iaeeh 00*g ins 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 wwrqa5g l+59e is 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 ahp1yeef m)licm* (hqd8od7 lk4.s5: mre identical in every respect except that one has twice the p5lcy lif 8des(mqem*dp h : .7o)k4mh1late area 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 capacitance of kr qioq / +xyev 91x+qlxr700yC. If the area of the plates is doubled and the distance between the plates is hal/v+yxq 190xy0+7o rx qekrliqved, 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 a : fisxuu,668hrs5o bdnd then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the pote,sr8iubo6 f5d6:su h xntial 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 /-sp x:bd s y. aoj2,de2euk +fagm+b1between the plates of a given capacitor is weakened, the capacitance ofos. a/bbdgxjd+yk,: us1p+ame2 f2e- 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-plate:k. y kqivj pq:b0-iw* capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the py0wkqv: -i qi*kpb :.jlates 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 voltagev:l91/np ds zc by a battery as they are pulled apart. What happens to the /szn1p 9c: vldstrength 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 fo6oirl,6+ wag va*bep8r adding a dielectric material between the plates of a capacit,g6 6+ea i*8owbrav plor.
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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 pla omkw9 rg+bx nv30ww;9x5f gq1ced between the plates of a capacitor. What happens to the capo;gw01frxq93 + bxk 9mw vg5nwacitance?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material:- aj1shucja( ng 6p9w such as paper is placed between the plates of a capacitor holding a fixed charge. Whaa(-ja npuws19hcgj 6:t 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 connected to a battery and becomes fullyp3tf, psgq*t(*0j ezq(bm(-bvj gl 6w charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks o (tjwp0,m*j b b flq3zp(se(* -gqgtv6ff. 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 constant chaj1j6t y 8/xfv/jvx z0) wgus06,n-rxe9b fywvrge causes the energy stored in w9tj0 y6/vgj sf60yxuzn8x j,brvw1/xf)-ve 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 the energ7*amolmq 5kk et8wgz (u+4v+gy stored in that capacitor telg7m mo(5k+*zg+ a4t wuqvk8o

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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 pigaw943a - sozv3 n ,pdfqnv22oint A to point B. What is the potentialv qnfs-vp3w,gia2n24 z3 oad9 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 potential is -5r(ms71 y,gci a)cf-l c0 V, to point B, where the potential is s(- y ,)rg imcc71fcal+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 potybr5/tbd /xjz p0x6m/ ential difference of 500 V. What is the kinetic energy odz5 tx/bym0/j pbr/ x6f 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 atzmjqnrqhnqwmt,d1;:2;pdr y . y 2,l, rest, is accelerated through an electric potential difference of 500 V. What is the ,;dndl,hmyr j1py 2q2: w; ntzqqr,.mspeed 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. pix-atj .e, pr qdpbp1x .v./xpqi m11l7x);vWhat speed does iv m p b1q1x..xq;.et) xr,px1-iil av/ 7jdpppt 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 ;9sx: 8(d lwqkh1nmi)cno /uq do 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 x )auk1c-ht q:potential difference of 500 V. What is the velocity of-xtu:haqk )c 1 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 ai mxias6vxy/o rk25)1n ,cr*mC. The object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What isrio51,6k x /vr 2m*cainy)axs 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 maintj ; rru)mga-j 5b*-jcyx g6;tuains the electrical potential difference between two parallel metal plates separated by 1.0 mm. What is the elej*u5-; yc xjuarg)j6m;bgr-t ctric 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 directed para)4o*uvn m5ekro *sx c1llel to the +x axis. )o4c*1oseku mvrxn5* 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 electric field of 50 N/C directed toward the eau1k l8m r(q9ao0lx )mpst. 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 weqrlmoam0x8) l k19up(st 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 alonq.8mx jtt7 cf wbbsdc(aa 004/g the direction of an electric field of magnitude 3.0 V/m. What is the change in d( xt/ 8abasf. qmj c0wbc74t0kinetic 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, k /4kzz1 urx 38dr yie*8oqibkeym(*6separated 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 1.50 m from the positive plate, what is the d y 8 ykibzi*rr16/zq(*4me uexkk83opotential 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,3z gpjn-9wl3 xj)4ul w separated by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 3uxw9jzp4 3 )nlgwjl- 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, s1j ldxqi qtc* )d.lc.-/gv n5ueparated 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, what5 vldx.lu.n1tg)* d-qcji cq/ 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. dzf(uon u)ij:xv )tg1l 7 ) gfeh4af1*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 4ai vz:tj 1 nx(flghufg)u7e) d)of*1 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. x0cxc96t3hv g.f p/djm -e-gc 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 directly south of thtpjhdc-gfc/m-v.xcg6 9 x03eat 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 plq5h87;. j(vu teo pjxotential difference of 12 V, it will acquire a kinetic energy (in the absence of friction) ohejv8 (px olu q5.t7j;f

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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 distahltur /f c06n8nce 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 endsbtt 8nnr .ix;,o yuzakg ;ay biw84;-; of a meter stick. Find the electrical potential for the center of the metebo-;;t .a;i8; ,buna84yy nkgt xz rwir 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.t se5f 93q6cf,ivk:no0 o;8a-zxy pxc0-nC charge is at (3.0 m, 0). If the potential is tak6 zyk;c5aot 0fx xf3c esin:q-89,ovpen to be zero 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 a y1-0 oelbhhm4-2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinh0 m14 hyloe-bity, what is the electric 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 -2.0-nC charge isf)a6yu8 bue5x*quz85aw gj0 .wcc 5vs at (3.0 m, 0). If the potential is taken to be zero at infinitygc5bcq5sua y06zeuv. jaw)w xf* 8u85, 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 of a rectangle o qaci,t fn9d z+,d9,tpf sides a and b. What is the potential at the center of the rectangle if q,d9t9atc+ d pf,i nz,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 apd fv ;st441ct side. 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 -3.0 mC. What is the absolute potential in tvtd4fp ;s1 c4the 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 (cha0u4i.dqai 2 /owtin(a rge +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 charges, each of 2.0 mC4unkog 9x8:os , at the corners of an equilateral tr o8ox 9ksg4n:uiangle 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. d t,z;dekw,/w0-mF capacitor when it is charged to 100;,ewdzdt /k ,w 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 a2xzti.,crt2sl7qn fi)71 fqb:hf m 5frea $0.50 \; m^{2}$ 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 separa,4,xxmi npii l(2c/eeted by 0.050 mm.2,lxc,pni xeie(/i4m 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 capacitor has plates of area r,t n8 q8 8revbtt8thor7fd.9$0.20 \; m^{2}$ 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 potential lto2-)t za gxre3 :q:woi*cs8difference between the plates is 2000 V, with the top plate at the higher potentic)ts8ezo3*itr 2- qax: lo :wgal, 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 connectednqtq1hdwycii3d */ct3) :0h q4k+eay across a 100-V battery. After the battery fully charges thq /:d0itqa qiy h3c kc1wn+ htd)3*e4ye 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 m5x:y g3iptv n *7voadoplh0*.uch energy is stored in the capa *alo gptxp3* yv:v7od hin0.5citor?

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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. Whh3f /ja1k-q wsat is the energy stored in the capacitorwh/s3 1kj aq-f?

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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 onti0qbj ,6bov7 3 p3uhpco the plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in charging this capacitor?h , cv0q3 juipbopb763

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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 thateexjv 2sw0 b:8 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 consiswze6 hwbq4i 4)ts 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 areaw6mtd/:i unj1+ kwm*1e sk/hn5/s wg 2btxs; k $1.5 \times 10^{-4} \; m^{2}$ 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 capacito,7e7yxo 4mt(r5 y 7rfgjx +lhvr 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 o+u -is*y q*mmnrsj8: tf $0.40 \; m^{2}$ 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 :orp4 0,t tvy:zy+ js;khmz.f 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 0 veg*cf+ dmjz5yb. b+to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that c yc m+z.5e vg*+dbbfj0ompletely 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 and becookmz4 lez)10i mes fully charged. The battery is removed and a slab of dielectric thatokel1z mz)i40 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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