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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 rg mvuciczvz48yy a437j a. 3p2qo6y9 exists in the metal resistor connected to the battery. Which one of the following choices best describvcy3 oq7a44myiacg8up.y z3jz69v r2 es 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 resistors are connected in parallel, the_________eachr ry9z wys(9.o fz9r0t resistor (ryt9rr99y zwz.fs o0is the 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 filament wire otm0-/ix rszsx 32 gjek00+osnf a lightbulb causes the filament to becomt3 0sxs 2 nog0xir/skez0 jm+-e 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 xlfzqtx*n 19; household lights are being replaced with LEDs. LED is the acronym for which one of*1qx f;9nz xlt the 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 cylindricalt6k ckvnj, e2-pu2d; b graphite resistor has length L and cross-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 tt-2 vjnkp d ,bk;ue26che 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 made of sy53rbn m/. abthe same material. Wire II has twice the diameter and twice ths5ab/r.ny3m b e 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)h t ww yfe5hr2/3.(hb l pjz5o5jszl- twice the diameter and half the hr5hl-5)eof2 j(53p z zbtw./hlywj s length 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 le-o14ei r ag iq r7ktt2;sj5o1pngth L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this materiagkrjet t a os5o1 1r-pq74;2iil 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 light bulb. He decides qcyq (c k50f1 kzdh619vm;y. u toyil1to modify the filament. How should the filament of a lightbulb be modified in order to make t9y 5t1vy ; o.z6 hkcmlic(k1qqy10uf dhe 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 materialekvzh.35sf o7. The length and radius of each resistor is:. 5 ezk3hfovs7
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, e 7cwqang-/.ei pabx77 v f qbjwo, 9+c4*wk+gpach of resistance R, are connected to a battery in the following way: “Two resistors are connected in series. 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 resisang-f+v 4wb+7k* 9gq.,/7pb7owwjq pxcc eia tors?

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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 intern ur f (g zg29kd.xauff0dl-67yal resistance 10.0 kW and the ammeter has internal resistance 25.0 -ff u7(g2 .6u9gyl0 fadkdzxrohm. 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 compound circuit shown to the right. The three bulbs 1,cw 8jy,rdm;/vjm gfpv:5 s)m ; 2, and 3 - represented as resistors in the diagram 5vs /c fpm; y, :)mjrdgm;vw8j
- 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 +v ujd m; 4+- z:9kluxhqwoi(selectrical circuit at the right. If the current in all three resistors is equal, which of the following statementz+mqui9kwxj :lsh;dv-(o u+4s 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 e50q4m3.ruc zox.del qqd1x(of 5 idequxl.m43e cq. qoez0(xrd1 5dntical light bulbs 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 r, ksrkt2o,n):qz6wq true concerning the simple circuit shown where rrtzq,nkrw qo6: 2k)s ,esistors 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 b9x xfsto))wpf8 he-qq g)5z,to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel with each other to the same battery, wqzo 5,x)qg)8ht9ex)pb- sf wf hich 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 reiy3tk3+n+gzu ,mbdd3 sistor in 5 seconds once thimnkdt3z3b+ u+y 3,dge 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 havenl)c;n)ms6d e51o eg5a8cz(+avph ci the same resistance, which would dissipate the greatest power)+5c;8(npve5c imezoc g)61adns hl a?


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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 accompanying43b vj;np sl ;m:bj,,nkro y7e circuit diagram, the current through the 6.0 Ω resistor ipb,:7jk3r oy vb;l4 ,j;nesmn s 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 connected in ser6cnv/nfb q0ais4a+zx s;h0i 4ies to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω sfa6s4ix hn0a;+bqz c4 /v0ni, and R3 dissipates 6.0 W of 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 different1+ rwc2ynq*7wg:cqpx resistors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. :1q7c 2prwc*w+qgynxWhat 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 120 volts.(h6vdz:pkf .b2 u*uc;v7pntp What is the maximum value of the current under tt.;(n6php kdv: uvbpuzf7 *c2 hese 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 60 watt lightbul3 zc-*b;xeaf6 j(hr bbb designed to operate at 120 volt-e* (zxfh 6ca brb3;bjs?

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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 throug2d+j,2p ir tfkh a 4 ohm resistor that is dissipating 36 watts of pokp ,2fjdt2 r+iwer?

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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 mar.f nuw 5n,,epoked "120 volt, 600 watt.” In normal we,,fno5up .nuse, the current 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 followcwj*uxt;7h k05ghsb) ing resistances could NOT be produced by a circuit conth7*)xc ;btgsj0k h5 wuaining 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 equiva db.uexg+qj nurszy4+ +5v-v: lent resistances CANNOT be pr jz.u -4:+qvvnxbey5srgud+ +oduced 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 t4g +6 *iqxvebyp vz,w/ogether in different configurations. If all three resistors are used in a circuit, how many different values of total resistanq,vw*bp+ iey6/zg xv4ce 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 resvl*fjim )u ,a(istor is connected to a battery, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical res)j,( u fmlvia*istors 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 v 0ba n-vjnk+)and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following stat)+0n-bakjnv vements 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 resistance tv llb(2+b d):m3.vuc31 khtfm,itx4uzdz ) eof 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg of water fzu)(31 t3kl:h lzu)xmvbv bet2f4+cdd, .timrom $15^{\circ}C$ 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 resistor that is dis6vhnbnij7h2 tqyg :g+ j5r)q /;prt w7sipating 36 wa+hq;tt6 j/ 7yqpjwr:ngihr gvn7 2b)5tts 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 amperes of current when connected tgm6l th)ncb*pbq 48dv/jn,4b o 120 volts. If the price l/bn)j8 6 ndp vgbqth44,* bcmof electricity is $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 to keep a 100W lightbulb lit contin.wyr45a af-83eufb* vg*mvyd uously4av.av 3fwbrym5-eg*d u yf 8* for 1 year 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 inxkw6dbgw,)nr84 mc. u a power of 24 x) gudb,r mc46k.8wnw.0 W associated with the bulb. Which one of the following choices best represents 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 six owns a computer rated at 500 watts ing /h9qb8w5tuh a 120 V circuit. If all computers arequt9hh5/8 b gw 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 connected to four resistors to form az9)opd c 5/9fihx/+ xh y1eku*,hlplc simple circuit as shown to the +upp9h/zh/ lfd*,h9 koxc iy)xe1 5lc 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 connected to four resistors toq8kc.h a)j-8ip9gzrk form a simple circuit as shown ta8i hqgpc8k.-z)9r jko the right.
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 fy vhhrk3g27 x;)8gisand three resistors are connected as shown. With the switch open as shown vhrg;k)f i23 7 hsxyg8in 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 s,chd3zrrm lc 21j( j2qwitch and three resistors are connected as shown. With the sh2 (2mdqr j1cz, jcl3rwitch 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 amm(y s5s j0xzuk)eter, a switch and three resistors are connected as shown. With the switch open as shown in the dk)jy zxus( 0s5iagram 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 equivale*om kq2arf 7( dq k:qbza +)3qtm*qj;ant resistance? Assume that all) b(oq jqq2a mq ak3d*:fzmq+a7k* t;r wires are 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 f0 uq6gcx prn zipj)e- k81m*9 the right with resistances-jqemk 6ugx9 c 1p *8fn0r)pzi $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 combinat1w5mhj jrnf5 -ion series and parallel circuit to a vj1fjh-5 n 5wrmoltage 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 shows fivebmc5(f4eul 9p identical resistors connected in a combination series and parallel circuit to a vo9efb5plm4( c ultage 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, s; orxg:,2of(k hw:yl all of the bulbs are identical. Which bulb will be the brs2o gyw:(:kfr xh, lo;ightest?


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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 resistors are cta d/bxk53ar 1ep6 npw,j2w9 connected as shown. With the switch open as shown in the di3r 6 wtx5p,pnk jb e/awcda129agram 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 ammete b2a,croe s/xq2x /8vyr, a switch and three resistors are connected as shown. With the switch open as shown in the diagram/8xoc2bare yv2,/xs q 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 battery, an ideallno/kso2q;, .qwu io9 ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 am9.uwio,lnk q;s2oq o/peres.
When the switch is closed, what would be the current in the circuit?


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