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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 existsqqu4 9n*90d y ,xnj zimfn6pw/ in the metal resistor connected to the battery. Which one of the followqu, 6w9ifqnmjnpz9*xdy 40/ ning 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 resis yxhp ( 3sq7*at oljq *u.sw,4uu6k4kztors are connected in parallel, the_________each resistor is the sa3 hqqt*klayjzp*wu6 4 ok4x.(s,u7usme.

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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 t:v jrd,8 nrlt7.f x)sxm5 *iw)u gat,5 t)xmrshin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cjr f5m)assg l8,x r :d xrun5)t*7xvt).it,wm ooler. 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 foo3:g ,,2m/1qym ph6ztj gh fis the acrong,6hotg/,ypo:j3 m2 mhz fq1f ym for 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 resistor has length /x0t)cuz qb ,rL and cross-sectional area A. It is to be placed into a circuu)r0x /btcq,z it, 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 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 materi11dwk 4pfl6m,sjcd9p al. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has resistance4 1dpfsmdwpl,6j ck9 1

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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 anu1jf 5kd6i*; a:ee3)jn adtwid half th e)deu 6af*: ;3jiiktjda15 wne 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 length L and radius r. Thiho2ifhj6r ,y3;khd)es piece of material is then drawn so that it is a cylinder wikfr h63yod)2,j ieh h;th 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 6 6vqg4;,ol-e+1i ypqrnp w :l7datgmEdison wants to make a brighter light bulb. He decides to modify tdv i;1,g l:repn-7q oapl6 qym6+4wgthe filament. How should 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 ofsie xhm,wv hl5/0v/d;uw +hq: the same material. The length and radius of each resistor isuh v50w :,i; edlxs//hmqvw+ h:
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 resistance R, are connected to a battery in x: 7,k7phunqxthe 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 7nkhp7: uqxx,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 th jg9 xmum55sh4xfke93e accompanying circuit diagram has internal resistance 10.0 kW 9h fsx m 5g5ku4j9x3emand 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 compound circuit shoye 3:/*u vib /9guey sfcu94wdwn to the right. The three bulbs 1, 2, ane s 9*by:we/9dgyc/i3vu4u fud 3 - represented 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 electricpl5 hbho) 4ti-e)/gzkw-1b 5o;s iqgoal circuit at the right. If the current in all threebpgt-z/hh i)5o1 qo- 5gbo si;e) wl4k resistors 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 circuit compos4b-d/3byk ,/-*xanhol9yhvepm mz a0 ed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or bulbs)-ydnalme9/yhb3bpv / k ,40 zm-o*xha
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 simpz/j9a jvx(zr8le circuit shown where resistors R1, R2 aj/z ajz 8xv(r9nd 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:bkb:/,e4qet ibv ca. connected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are ,ak/:ebb 4iteq. c:b vconnected 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 coulombs will pasv m7uqqz41f x;v.;awl 92qlo is through the identified resistor in 5 seconds once the circuit was closm lazq4; o fqwv;v7uxi1.2ql9ed?


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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 simpl5 sx5x-mh54le.1 bsqpz(p 9cwnf*rm ce circuit have the same resistance, which would dissipate the cl4bhnr.p5-ex fm(m 1szc9 qwp*x5 5sgreatest 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 cur3-+n57cmanrg te r g-brent through the 6.0 Ω resistor is 1.0 A. What is the power supply vogb5n7rm -r-+a3cet gnltage 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 series to q*w8x b6k) baca 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 is6q8w ba )kcb*x 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, R 2*qtob3ob9 ljt.t2w c2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the owt 2*b9botl2.c j3tqcurrent 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 ey+gmae2uw dx v6t4 7b*bc ;..: dqgtvrated 1200 watts and 120 volts. What is the maximum value of the current under these v. g;d6 ec a7ex4+*bdb .t2:guytmwvqconditions?

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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 designed to operate at 12cjp0)-,hv):i( rdad spj wr5d0 vd h rrvp wj(idc :d-ja05,))spolts?

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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 resin):k,wre. rmne pbo-efo,b-3 stor that is dissipating 36 watts of pop rmfkn:bbr -) w3-.o,eo,neewer?

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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/tuk munc+1o u64wf0u "120 volt, 600 watt.” In normal use, the current in it isufk1cmwu06u nto 4u/ +

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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 resistanc c9zequn88nwg9)bs kyy ,bj13es could NOT be produced by a circuit connsz1jky,3)89y8 n euqbg 9wb ctaining 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. x4t(sgw9ue0 mWhich of the following equivalent resistances CANNOT be produced using all three resisttu(0ges9 x wm4ors?

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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 togx,ajuxoa6zthdj u:2l 096k,x,pj mr+ether in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be producedmkx9uj2oz,j6a, 0+t,:jdxaprxu h l6 ?

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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 power P is d57g/ psot-b caissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected in serieag-bcop/t 75 ss 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 j.cnm rwvfj8n op4v(i)4f siz,+5hkk(k w l(8 in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistances is correcnnkkjop,wl.8r48(vmzk(h5 )4j+(ivi f f c swt?

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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 d*tkl5l +x4 2aslba8ieesigned such that it has a resistance of 12Ω when operating at 120 volts. What is the minim2*+tlli 5 b8lka4s xeaum 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 dissipatingh *q1;i 7o3xpnfohn3n 36 watts ofp;3 q3hi*ofn n n7x1ho 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 whwa-0;b hzu.cr en connected to 120 volts. If the price-;0rcw .z uhba 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 wjo4hlnndr1 (dg8, a, much would it cost to keep a 100W lightbulb lit continuously for 1 year at a rgn rjd ,l(n4hdo81w a,ate 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 afg.s 8v)h;;(tbctz u n lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best repress. )tzbg(u nvhc8f;t ;ents 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 famiq7yd dy04kf7 dly 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 operating afd7d 07ykyd4q t 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 circuitqoy 2; mowi,/ mv6r*nn as shown to r/q2,no6imm ny ;w *ovthe 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 to form a simple cirrajq eu(u3p-m 4/b3ppcuit as shown to the rig u4p rue/j b33qp(m-paht.
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 and6:w4oatq +.co-a pe+: goey wsg;u +gs three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.04ag:y:wst+seoqeo o uw;.pg+-+ ac6g 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 ap+)e b.m s6+14sv4hhgspx ro immeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.6xs. 1h)i pvsprmsh4g4 +boe+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,:t/3dho )kh sa a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampe/atho:dhs)k 3 res.
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 t;qylm6z/d ixx .9cz9qhe right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no x/d zl6y;99 xq cqiz.minternal 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 resi:g jnnbeg-:q.it44 c mstance of the circuit shown to the right with resistance:gnc jn:ig-t4 mq4 be.s $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 combq+3 pxo48gzpo3x klrr : g3i2e5nadc h98,fnvination series and parall 3ic:d3rn3p h, 8xq5gogfo48r92 +vzknp xealel 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 five identical resistors conym/ +b i s(wqzdr -: tmaak-;jcv)-xy0nected in a combination series and paralle /-s ac)iy(zad ; v xqkwjr0t:--y+mmbl circuit 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, *b *hy /mc2fd30mswnc all of the bulbs are identical. Which bulb wn2cf*s* 0/wymcd3 mbhill 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 idi*car:kry 2)t/hylu anl b-5;eal ammeter, a switch and three resistors are connected as shown. With the switch open as sh5y*iyrn )a2t;/lkcb:u alr-h own 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 batt wa xpajr; 9*1z/ygt-dery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 x9; g1w/*-rzjyad patamperes.
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 swic jl.( ql*(bk3mhjt. rtch and three resistors are connected as shown. With the switch open as t*hj jr b(ll3c. .(kqmshown 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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