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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 exists in the met bj1(nf1 qcb,oal 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 oc1jo n,1(bf bqf 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_________each resis+tue6j:bjh vg+,r (ial2( et+9 sdqjc 13mp phtor i (ju( :h+he6b+9pea3tqp1ir ,jgd+ jlmt cvs2s 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 of a lppg).y f, y0cp:ase6nightbulb causes the filament to become white hot, while the larger wires connecte e:.sg canp6y0fyp)p,d 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 with LEDs. LED is the 1voqphsg 2r:c /+ v/+yvh fm5macronym fom yp5f:gv+q21hv/+m vc os hr/r which one of 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 cylindrical graphite resfrtg9wt0. t6;oomk 6 zea7l:wcta 5v :istor has length L and cross-sectional area A. It is to be placed into a circuit, beo5v:6 tt; at7o9 k.wcwfrt6m: agz0lut 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 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 the same material. Wire II has twice the da7;9jbbtb9 q biamet7 q ;a9bbbjb9ter and twice 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 tw3 b.h9m3)vtsi2;bwfh2 cqavm;yg: o f ice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a resis mf 2 tqafviw9;bm3 vbc)s;.h:gy3h 2otance 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 piecx7)s4xbww jku mu:/x xx9 uk02e of material is then drawn so that it is a cylinder with new l)42xjus0 bxm ww/ux :u9 xk7xkength 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 Thomr)b+( s ucordc dcf887as Edison wants to make a brighter light bulb. He decides to modify the filament. How shouldoc)8+b7 s(dc frcu8dr the filament 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 length an*kjqk l j:e d0q4 iive (nk/2kbt7un)8d radikt )0v7i qken4 nlkj2qi/8 (b*kdju: eus 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 resistancedb 72i9k7yubm+m uqjk. n)z1p 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 resistin+2.jp)u q myk k91dbz7mb7uors?

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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 cirr9* xxvi chm8;cuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm.x*;8hmr x9vic 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 thre n4gbczod x,.2 rah7wb 9(dsz ;j7rg0pe bulbs 1, 2, and 3 - represented a2.,gc09bh47xzpajn dsr ;zbg(w o rd7s 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 circuit at the rko5m+o)zimdu x4 t. gjy yw((4ight. If the current in all three res o5 jz4x4wm)g(ut+k(.doyyi mistors is equal, which 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 cirlv3h w. sxera/+rc :e/cuit composed of 5 identical light bulbs and 2 flashl /w:casxh3r/ +rel.evight 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 follodf al c45zr.m*wing statements is NOT true concerning the simple circuit shown where resistors R1, R.drcl*m4f z5 a2 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 a1v3jjdc xkf.5 2/hqn 1vh2tea battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in / vvjk13dj.hhfctex12 aq5 2n 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 coulombs will pass through the identic aaf7 87bun2 +erzns3fied resistor in 5 seconds z bfe2 s+a3nar78uc n7 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 the resistors in the following simple circuit have the t3::s-qnuw)cd65k 1u qji /mcf *mjkosame resistance, whif- jnumkumjqd*o5c: q/:3i s k )6tc1wch 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 throjai u-.xnaq ;7q /xko;ugh the 6.0 Ω resistor is 1.0 A. What is the power supply voltage Vka;oun;a x qq. /ij7x-?


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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 connecteds x79u57qd g/h1qwy s nf;z2wp in series to a battery. Suppose R1 carrieyhfw7 9;qzsq u wsg17p2x /dn5s 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 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 resistors R1, R2 andR3 are connectcld0a jt cs+9s v52z zt(9f-4gh alht1ed in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R351(z- z9fth0+2c9gcv4h t ljldssat a 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 andp6in )jb *8blb(19k xbcy+kmp 120 volts. What is the maximum value of the current under these cm+k b)ixb bpb8c1y*69jk (pnlonditions?

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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 lightbulb des72tdj0uh no r/igned to operate at 120 voltso/d j72 n0rtuh?

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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 thaq::i0kp*pz,nck oji,k qe: 1vt is dissipating 36 watts of power?1i,o pz::nk ,*qv 0qjpkk:e ci

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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 marked "12mcqt2fdtw; sc/6 m6gqf + 3bn40 volt, 600 watt.” In normal use, the current;ft w6 6mcmdc3+gtbn/ fq42sq 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 u;5z e/7j mk8csw8co lby a circuit containing only three identical 6Ω resu ekmcc78jls 58z; w/oistors?

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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 i r t;2hz7ut je2le.;0eiie,- cp.jpgresistors. Which of the following equivalent rceu.lj,-.ei;ej2h izrpi 7p ;t 2g0etesistances CANNOT be produced 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 together i w;j p+wwyv2 ,ys5.tdgn different configurations. If all three resistors are uvyd ; s+wt. y5wpw2j,gsed in a circuit, how many 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 resistor is connected to a ba(wz1tk6)hg ji h,*hh y ut34uattery, a total power P is dissipated in uy6h(u,* hk a1j)4ti g3hztwhthe circuit. How much total 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 c1yyv)j; b:xd parallel, the eqd1y by:;v) jxcuivalent 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 su xad*ie,0rbowhl x)-,* os 2nvn ,cy.ich that it has a resistance of 12Ω when operating at 120 volts. What io x *. wx*yl,- n,c0e,2dih)v onbasris the minimum amount of 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 current flows through a 4 ohm resistor that is dissi-zh kwu5c:*l tpating 36 watts ouwhck:t*5 z-l f 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.gw6tr zb/7x 9p+ag y/ iacjk9 of current when connected to 120 volts. Ia9/ kb.ixw + y7/pt69jcrga zgf the price of 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 m--6 kb n3fcxvy)m1zamjmj-l 8uch would it cost to keep a 100W lightbulb lit continuously for 1 yearv6-m ml1b8-zfn3 c x-a) jmykj 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 in a pow ayz7e0r*-o 8)ep q,1 0 fylsnyklwmm.er of 24.0 W associated with the bulb. Which one of the following choices best represents the resistano e. 81l0y,7nw 0*lmzym -rsy)pa fekqce 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 w. o vt*:/csum0 7nyraa family of six owns a computer rated at 500 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 computers can be operawa cm :/sn7t.o0u*y rvting 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 connect+lp; oorjttyn vv ,)ucsi+ 5-/ed to four resistors to form a simple circuit as shown to ; 5uvj yvn,+t)so+ c/-roptilthe 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 ,vw (ks28,tka xfbk0tto four resistors to form a simple circuit as shown to the rbx,wt,sfa0(tkvk8 k 2ight.
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 and thredf6bg +rj1/v v .sbv.h 1ihx3he resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampe 1vbsxh bjdh. 1/3hf.vig+v 6rres.
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 swit5-cpg pcq7gu * ()dzvnch and three resistors are connected as shown. With the switch open as shown iv* 7d-cg5p n(g uzcqp)n 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 idealt (yd w+l:fi+e ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampereyd( fe+:lw it+s.
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 the7qv 7u h4b 5i.:ibcoflk5df8e right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three u :5ie vk4d7q.7fhi58cfb bloresistors 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 circuii ipp *fqp: *uud7s+ 8ji+nel7*u0f swt shown to the right with resistancifp *8u+sn7 i wd* 0lse7u*+qpi jfu:pes $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 gup,tyv d ((6yidentical resistors connected in a combination serid(,v yy( 6ugtpes and parallel circuit 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 shows fiveav6n ;jz un3ik s-/cd1 identical resistors connected in a combination series and parallel circucdvau zn1 skji3; /6n-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, alifw arf*k/zg1f 4vac-,v so 2/l of the bulbs are identical. Which bulb will be the b2o -v4zskgwv*a1 i/c,frffa /rightest?


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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 ammetet5/zm ule.1-:)/) dgta9 ufvg m7ci u ymuh0ocr, a switch and three resistors are connected as sh:7m 5/t0)o.)-mltfch ged mui/ycuvau9 guz1 own. 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 ammeter, a switch and three resistors0bwps6h41 j zw are connected as shown. With the switch open as shown ihzs61jww0 p b4n 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 battery6kz 0l coy5ew9, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown 6zkw95olyc e0 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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