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习题练习：.Resistor.
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 作者: admin  发布日期: 2024-08-22 15:34    总分: 50分  得分: _____________

答题人: 游客未登录  开始时间: 24年08月22日 11:12  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  
  16.09: In the circuit shown, an electric cur,4x1( lx;luzr oaz*jpcf*h(b rent exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the direction of the electric field through the interior of th jxx(f lz4uabzcp**1 o;,rhl( e resistor?


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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.06: When any four resistors are connected t ld 35gnmlf+byx22oua92g(rin parallel, the_________each resistor is the s 2balu 2m 9otfl gr25dx(yn3+game.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.33: A current through the thin filament ca d087(ju-xhvf6js pmv +en3 wire of a lightbulb causes the filament to bec8f 03 7 m6+d -vvjsxaunpje(chome white hot, while the larger wires connected to the lightbulb remain much cooler. This happens because

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.08: Some standard household lights are being replaced wi;fkr w4z)4h rz4w;gbnuqq h9h l(7sp9 th LEDs. LED is the acronym for which one of the fopn b4;l hh9zqwgw(s)rkr 4z; q9 4h7ufllowing choices?

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5#
 
多选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.16: A cylindrical graphite resistor has length L and cross-secip):jzx4e p a+tional area A. It is to be placed into a circuit, but it first must be cut in half x apj)4 :iezp+so that the new length is 1/2 L. What is the ratio of the new resistivity to the old resistivity of the cylindrical resistor?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.20: Wire I and wire II are +ht vv(*d6/ 8ox kz.xxpt+uxfmade of the same material. Wire II has twice the diameter and twx.+ftxk vtvop x+d 8hx/6(* zuice the length of I. If I has resistance R, II has resistance

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.31: Wire Y is made of the same material but has twice the diameter as(x+r-/jq,w+ fv9hsj:c8; ; 5s koyt qozcuwand half the length of wire X. If wire X has a -j q;kzs8yu+wft:9q jc 5,xo/osr(w ; cvsha+resistance of R then wire Y would have a resistance of

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.23: A cylindrical resistor has length L and tze 2hfymn)6/j:6 e zoradius r. This piece of material is tztfyj2z hm)oe :ne/66hen drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of this process?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.27: A junior Thomas Edison wants to make a brighter ss uc( szb9:d4jtn p2;light bulb. He decides to modify the filament. How should the filament;9 z24cup s:j(sdbsnt of a lightbulb be modified in order to make the lightbulb produce more light at a given voltage?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.07: Three cylindrical resistors are made of the same material. The lensi(ny3*m 4p gqgth and radi4 g *nqisyp(3mus of each resistor is:
Resistor 1: Length L, radius r
Resistor 2: Length L/2,radius r/2
Resistor 3: Length L/4,radius r/2
Which one of the following choices correctly ranks the resistance of these resistors (R1,R2,R3)?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.22: Four resistors, each wc:ek;4v;1/ 0 g klpn0rrgltnof resistance R, are connected to a battery in the following way: “Two resistors are connected in se4;ltn/g n wk;rlrpv00kgec: 1ries. This combination of two resistors is connected in parallel to a third resistor. This set of three resistors is connected in series to a fourth resistor.” What is the equivalent resistance of this arrangement of four resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.35: The voltmeter in the accompanying circuit diagram has internal ovs 6n 9epwh)*r5fcbi3v/5 baresistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most vhao/birb5w3c)f n pvs5e 9*6nearly:


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.37: Consider the compound circuit shown to the right. The three bulbs 1, 2,v0u,g uy vl+d6 and 3 - represented as resist6ul y+v ,vud0gors in the diagram
- are identical. Which of the following statements are true?
I. Bulb 3 is brighter than bulb 1 or 2.
II. Bulb 3 has more current passing through it than bulb 1 or 2.
III. Bulb 3 has a greater voltage drop across it than bulb 1 or 2.


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.30: Given the simple electrical circuit at the right. If the 2rygmy ,c5 d4tcyi 1(rcurrent in all three resistors is equal, whicyy gdt, r(2c5yci 41rmh of the following statements must be true?


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.37: The diagram at right represents a simple electric circuit composed of .co;s )mura:e(v 23i*z quosl5 identical light bulce (uqi)mo 2l.rvs:*o su3;zabs and 2 flashlight cells. Which bulb (or bulbs)
would you expect to be the brightest?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.03: Which of the following statements is NOT true concerning the s:ky o ycm9r7aus(rd+*, .(fwx pco,rvimple circuit s7r,*vdr:pr9(k .co,wuyy(f+ amcosx hown where resistors R1, R2 and R3 are have equal resistances?


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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.29: Two lightbulbs X andY are connected in series to a battery. Bu9uh (l jzy 1-s4o 0m5z*vhlexolb X is brighter than bulb Y. Assume all circuit elements are ideal. If b x5o0us z 1vom*jz4(yll9-hehulbs X andY are connected in parallel with each other to the same battery, which one of the following choices best represents what is observed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.34: How many coclaxbc75:t ;s ulombs will pass through the identified resistor in 5 second7act;xs5 cl :bs once the circuit was closed?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.23: If all of thtd9k/izg yb13e resistors in the following simple circuit have the same ryd3 ig b19t/zkesistance, which would dissipate the greatest power?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.34: In the accompanying circui: )0yw 7hgycvgo h6g tu;gzv1;t diagram, the current through the 6.0 Ω resisto1)hcg gwv htvz: 6;ou;7yg0 gyr is 1.0 A. What is the power supply voltage V?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.27: Three resistors R1, R2, and R3 are connectede tcz(k:qoay+ 7c 6 iqaqa:9,x in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W ofq6i xaqq: y( kaae,:c+otz97c power. What is the voltage across R3?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.40: Three different resisto 9 4tvpsl,;reno t3y0ac5tc-xrs R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and xavr ;l0 t5e3,n 9ptso y4-ctcR3 dissipates 6 W. What is the current in R3?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.13: A heating coil is rated 1200 ls;l/of og*g* 0.5ps ht-ebm ywatts and 120 volts. What is the maximum value of the current under these conditipy .gllte0s**-s fbo/ ohg5; mons?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.23: What is the resistance of a 60 watt lightb:d*9jwy- no7cl mib0nulb designed to operate at 120 n jn ib-wdo *:ym97cl0volts?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.09: How much current flows through a 4 ohm resistor that is dissipa yig+u 04wmjcpoh98q)ting 36 wattsc0)4 ogywjmiq8ph+9 u of power?

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.21: A household iron used to pufbdi*3w))iy:s vvzoys 442o ress clothes is marked "120 volt, 600 watt.” In normal use, the current:)i3v wzfous2i 4vy s)yd*o4b in it is

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.05: Which of the following resistances could NOT be produced by a circ9adq7:n 4 bkxz5fe(fn uit contain f k9:aeqnn 47(zbfx5ding only three identical 6Ω resistors?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  94.37: You are given three 1.0 Ω resistors. Which of the following eb5kee18ud 3w4z tzx*j quivalent resistances CANNOT be 1zb xz4e*d3 te8wku5jproduced using all three resistors?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.06: Three resistors of different values can be connected togetak(w40lqn sv9 g av;4wher in different configurations. If all three resistors are used in a circuit, how man44g n;sv0qk vwalwa(9y different values of total resistance can be produced?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.35: When a single rk0a qll rhni.7;8 x;zwesistor is connected to a battery, a total power P is dissipated in the circuit. How much tot07lq;xr8 ;l .hziak nwal power is dissipated in a circuit if n identical resistors are connected in series using the same battery? Assume the internal resistance of the battery is zero.

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.16: When two resistors, having resistance R1 and R2, are connected in para96zw6 pb(ket ;fkun dt4g:by (llel, the equivalent resistance of the combination is 5Ω . Which of the following statements about ty 9( :w6pz 64kf;u(ndbtb kgtehe resistances is correct?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.46: A hotplate is designed such that it has 04w 2cvdx+3ptq avso w*,eg5ra resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg of water gs*o qd 0rvx,c43ww 2t5epa+v from $15^{\circ}C$ to$85^{\circ}C$?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.09: How much current flows through a 4 ohm resis6fh7 js1vh8ah f04h r y74htzotor that is dissipating 36 watts ht sz fa1648hy77ofr04v jhhh of power?

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.24: An electric heater draws 13 afoxehr7x p w(mugm*zv7f;;,0 :9bdnn/b ox6dmperes of current when connected to 120 volts. If the price of electricity ir nv(m x,7;bm;hnb9 6/zxf7puwo e *gdxf0:dos $0.10/kWh, what would be the approximate cost of running the heater for 8 hours?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.05 Approximately how much would it cost ghu39ug 1ltst,z 02loto keep a 100W lightbulb lit continuously for 1 year a,to gg 9zu2 lslt013uht a rate of $0.10/(kW.hr) ?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.09: A constant currend bz7g-d12 kun*exl/jt of 4.00 A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents7undk2 zl -gj bxe*/d1 the resistance of the lightbulb?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.10: Each member of a family of s( bo4dsb3 orm;ix owns a computer rated at 500 watts in a 120 Vb3 ;soo4rmdb ( circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the maximum number of the computers can be operating at the sametime?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.16: A 9-volt battery is connecte7fx /tk;yy5m(y3.pimm ti g-o d to four resistors to form a simple circuit as shown to the righty(tx3g7pio/yi5m y;t- . fkmm .
How would the current through the 2 ohm resistor compare to the current through the 4 ohm resistor?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.17: A 9-volt battery is connected to four resistorgzq-4 c*w5ufzc*e5gp s to form a simple circuit as shown to the right.czu-5zgf 4pw ceg*5*q
What would be the potential at point B with respect to point C in the above circuit?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.21: An ideal batterywz a4 9wv5c-wv, an ideal ammeter, a switch and three resistors are connectea cwv v495w-zwd as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what would be the potential difference across the 15 ohm resistor?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, f dsqrdi(l5. z, y+b0by9m q;aan ideal ammeter, a switch and three resistors are connected as shown. With ,qdb 95.ysbr q;zdyma0 f(+lithe switch open as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, an ideal ammeter, a switch and three resistors are cgzgufm( g./ell (z *l:onnected as shown. With the ef(( g .u*:ll/lgz gmzswitch open as shown in the diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.14: For the circuit shown to the right, what is the equivalent resistance? o k xlhct))55z Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical re5lzk)co5x) thsistance R.


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.07: The equivalent rest( xff,vpq5q3 z*v3fa istance of the circuit shown to the right with resi aq5qx zffp(,vf* vt33stances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.20: The diagram below shows five identical resistors connected in a come0atgkarf+)xo,n* cbh8v7 m vtrn 58*bination series and parallel ci 7** b8n0nkchxr, mrf8t)+oagt 5vaev rcuit to a voltage source.
Through which resistor(s) would there be the greatest current?


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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.21: The diagram below showr+;k wz+qyqy ,s five identical resistors connected in a combination series and parallel circuit to wz ;,k+ qq+yyra voltage source.
Which resistor(s) have the greatest rate of energy dissipation?


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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.29: In the circuit.+;/010c tkaokt d8o r ejglvl0f:r *bcbuq n/ diagram, all of the bulbs are identical. Which bulb w.ko0rtln1tg+8 /0vkrbcfo dc:aq b j*ule ; 0/ill be the brightest?


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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.21: An ideal battery, an idea dmvn8au +;;1dyuf xni/ i/eco3(ci m1l ammeter, a switch and three resistors are connected as shown. With thendn/a;cvd um ; (uy +foc8xi3i1/ ie1m switch open as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what would be the potential difference across the 15 ohm resistor?


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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an ideal ammeter, a switch and three resistors are coj 3h5 7308 v y+ozrk 1jvioqvh4oq)bibnnected as shown. With the switc)ivyjrq3o ohkz 058iv joq1+743bbvhh open as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?


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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal batte ;lrnh0dizf9crk8 139jo g yd(ry, an ideal ammeter, a switch and three resistors are connected as shown. Wz093d1j(9gi fo 8hy;ncl drkrith the switch open as shown in the diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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