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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 current 5jl(g 0di/ lvotr 1(seh2q 4xpexists in the metal resistor connecth0/ 412x(j5 pv lgq (oldsitreed 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 the 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 f4yjy(6 r*vj oresistors are connected in parallel, the_________each resistor is thvy(fyr j6 jo4*e same.

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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 i/ b2:1dskp0/ cq1tm:ivf tkf filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cool11 p k tf:cds :m02ibtfk/iqv/er. 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 bei).eihga u mekw72 g+00 ymq(gkng replaced with LEDs. LED is the acronym for which one of them au0(7h . y0q2meg)kg e+wgki following 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- o thd4+/fk;u 9+xt4qx-ymeo4jdm0wr sectional area A. It is to be placed into a circuit, but it first must be cut in half so that the new length is 1/2 L. What is the ratio of the new resistivity to the old resistivitf/qxxtd o+wmm9her4t-4j0+; d4 okuyy 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 made of the same material. Wire II hv.6jial h/( esas twice the diameter and twice the length of I. If I h/.he(jv6sl aias 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 sam tp:)qkxav () -e) qoi,ixbc 8yh3 3(sz:vrqbxe material but has twice the diameter and half the lengti b8 (- e33 s):a)h)qxcrv qbpz:x ,ioq(kvytxh of wire X. If wire X has a 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 radius r. This pie(:w9n:3nxa 9 7) phmtkddn msqce of material is then drawn so that it is a cylinder with new length 2Ln xn:n(9wt79mmk d)qa 3sdph :. 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 brig bm zr1pe4 t98e2a+bzj;at ,qjhter light bulb. He decides to modify the filament. How should the filament of a lightbulb be m41 paqj;rt e9,jezm +2ab8 ztbodified 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 mad9wskf 2:*ortfr,wg6ue of the same material. The length and radiusu w2,ktsr6ro f*:w fg9 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 of jtd.4svm8.ofm 3* yb5 l s6rseresistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connected in m5.fvbss o stly4j*3md6 .e8 rparallel 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/n a3 dsniy/:f circuit diagram has internal resistance 13/ fs/ nadny:i0.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most nearly:


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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 compounklto5 1 5aw5ztd circuit shown to the right. The three bulbs 1, 2, and 3 - repreok 5 1zltwa55tsented as resistors 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 cir )k11wwoihr q)aov x1 j96l: 9rdvdzx-cuit at the right. If the current in all three resistors is equal, which of the following strdw19ko9d:j1 vwl-6ha1vxoz i)xq)r atements 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 repr:m- ( olpw k72uuzh2efesents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulbp olu:2 2ueh7 zmfw-k( (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 simple circcz4(yl ok;d:ljab4* 8d8au viuit shown where resisto*;lj8 d8id44z :o cuay(lak vbrs 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. B ;62xr,2:llwq kti vus(ve2btulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel kt6e,uvwi2:;ll r(xv q t22sbwith 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 coulombs will pass through the identified resistor 6v7a fosbp) b1in 5 seconds once7b)f6bv1 aos p 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 the resistors in the following simple circuit have the 0h,lzk g s 6xulrb6ytc5l3a58same 6u560bry8l h kll t,ga5 xs3czresistance, 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 circuit diagram, the current n;0i1n6 tz(iwgr-i3vinq i3 mthrough the 6.0 Ω resistor is 1.0n -i0inigw6 ; iv3iq1m( rznt3 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 ar 9dxb7a vz;h7tbdqj) 8e connected 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 of power. What is the voltage across9dq7)7hj b bxt;azv8 d 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 differenxed7 ri0/0cr62gi u3jpbo kt7t resistors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, oj x0/7 32rrdc67 et gpbi0uikand R3 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 watts and 1; :a fsk-g0mlq20 volts. What is the maximum valua :lk f0m-q;gse of the current under these conditions?

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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 pu qz:zfc mn-)+ fj9*p60 watt lightbulb designed to operate at 120 vnpm*:uc-+ j)q9 pzffzolts?

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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 resistr.kyy : di022y7 vm vokg44tyjor that is dissipating 36 watts of iom2 y gykt4v0dvy24 k: yr7.jpower?

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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 press clothes is markedr +5cih g5qt1s/cgf ;v "120 volt, 600 watt.” In normal use, the c 5ic1h/5ftg+sgrv c ;qurrent 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 x6/rn4a6jj+nae q h:cproduced by a circuit containing only thre/jh j ax:c nnqea466+re 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 : 6t. m 8486uiktcme:meh6ug hq:azkiof the following equivalent resistances CANNOT be produced using all tc qz:uekm8hki 4i.em6g6 8uat m:h:t6hree 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 ui/ odsd34(-umat5zb of different values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produ-b3(mdd uiu/4at5osz ced?

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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 resistor is connected to a battery, a total poyh(d+qu gg go9a . ybr4m4o. i83hwf.pwer P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected inhfgiyao 4m3.(op9r. .8 d +g4wqg huyb 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, arefs) b -4izv bmq(l9.ms connected in parallel, (l) 4q. ss-zm ifbbmv9the equivalent resistance of the combination is 5Ω . Which of the following statements about the 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 a retm am6kmhn0dpc3y(aq7:7 d)ysistance of 12Ω when operating at 120 volts. What is the minimum amount ofdck7 q6ay0tm7 h:3ad mn mp(y) time that it would take to warm 0.45 kg of water 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 currenh /n 2vwj qa(t8-wb.sst flows through a 4 ohm resistor that is dissipating 36 watts -8(jqns tw/vahwb2.s 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.b 83 wnetrbu- amperes of current when connected to 120 volts. If the price of electricity itb ebnru-8w.3 s $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 pn8+lz/5lr ;v28wnebzmd 6djmuch would it cost to keep a 100W lightbulb lit continuously for 1 yl n2p;8jwz l+ dnde 5zrv/m6b8ear at 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 current of 4.00 A through a lightbulb results i/q)/nwgw owg ml/ 0a1rn a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance 0)ag n1lwq ogwm /r//wof 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 six owns a computer rated at b wn06da4yqh,da;*j toh s::d500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the maximum number of the 4* sd, d6:qbhotj0 a; wh:aydncomputers 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 connected to four resistors to form a simple ,ura u 8e/fk a;,y4cwfcircuit as shown ac; e 8f,,4afykwu/ruto the right.
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 cu fdu+/o(4): urkp8wx5 x9pnkuo jb)r onnected to four resistors to form a simple circuit as shown to the rig5/k uwf8 :pbxk)j ()or4uxd rou+9unp ht.
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 battery, an ideal ammeter, a switch andu3bwac ;p70 xt three resistors are connected as shown. With the switch open apx b wc03;7taus 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, an ideal ammeter, a swi wxmins(q(+b+p 5x 8lilyt,i 4ygzw/9tch and three resistors are connected as shown. With the switch open as shown in th /+tl,qz4s 5xg(iyy8(liwi p9+wmb nxe 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,z.xa4dv-edgb ;s3d)anal ; u6 an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as )xs d3gud-ed4 zva;bla.n 6a; 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 an5ibtetp3z a rh3eh7,p/ 6 m0 shown to the right, what is the equivalent resistance? Assume that all wires ar0z m,/h a e3arh5pipbt 6n73ete ideal, the battery has no internal resistance, and all three resistors have identical resistance 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 resistance of the circuit shown to the right w ekri,ppq9;forb ,4(hn5of5 )1qz nmyith resistancrmf;niq b4p5y( neh5o9 ,)1qzprko,fes $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 akd (2co4dd r:v combination series and parallel circ:(ork2c dddv 4uit 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 beloi zc, 7j2l7xe)zs 9sgy.ri2ptc*zms 2w shows five identical resistors connected in a combination series and parallel circuiz rigjs2s9z2c)m ,z sytelp2*7xc 7.it to a 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 diagram, all of the bulbs are identical. Which buq;5d/lfboqd408y7ed rl a* wflb w/qadlwbf8d50 o rdyf q 4e;7l*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 ideal ammeter, a switch and three rlp- x*;eig*yp esistors are connected-ep*pl*gy i ;x 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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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an ideal ammccq 1a,2 gk/gvcgt d*at-8 zg9eter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperesg/g,gaztk* 8tda91c- 2cc vgq.
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 battery, an ideal ammeter, a switch and thr9ksq*h/s*rpii( e ll) ee resistors are connected as shown. With the switch open a )rl/9**ls( e ikhispqs 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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