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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 c- 3 eacscqj*0yurrent 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 the resis*jc-q e03 ascytor?


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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_____/+yct/ oxoc*t1n zhx/ ____each resistor//n*x /ztxh1octc+ o y is 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-8o(cii npe2 -m/ rnxk the thin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbueic2-o px-8m k inn/(rlb 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 househop -t nc)uvycul23,/ xbn84edpld lights are being replaced with LEDs. LED is the acronym for which one of thenye-v/nlcd b,4tx2 up 3uc) p8 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-sectional area d j.ymm/i. e0oA. 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 resistivity o.mmed ./ yj0iof 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 txjj6/a)8q 4-mksc gsehe diameter and twice thc/)k -s8xejs g m4qa6je 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 cwohy /lgw94*qid;xm(;inb0w): f om same material but has twice the diameter and half the lengthww(;o:0i9gh yn q*cf/mx)wobli ;m4 d 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 resisvl79.gy3 3ltwh5dgs ftor has length L and radius r. This piece of material is then drawn so that3hgl wt.5fs vdyl g937 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 Thomvdxzqz )eaex,*;0(zh rw06y has Edison wants to make a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the ligzzeh * y0 vzhd6ex(;0x ,aw)qrhtbulb 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 2 fedo 4)s4twnmaterial. The length and radius of each rnos 42e)tfd4 wesistor 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, eac x(*z.xu zwvgw3-k w6eh of resistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is conn xwz 6-*w uzew.g(kv3xected 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 accnz:9gg7v hqp np8wa4o4(a y1m ompanying circuit diagram has internal resistance 10.0 kW and p p4a8qz(1h4 9a7nwov nggmy: 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 shown to the rightdc)v:6te uu9tal/ .3pa obsh5 . The three bulbs 1, 2, and 3 - represented as resistors in tht/cpt uhl6 au b)a5:devs.o93e 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 0-bae+m8vu;+ th +rmyf(ygacdn.n m 8right. If the current in all three resistors is equal, which of the following statements must be true?y;m8tdmv+enrn + . -(m08gcfya+h bua


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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 5*cpn8 elqc6or+p:cl0 iol*cql6cn +pp:c0e 8rdentical 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 true concerning the sim xc, e0mwi7cw0co*s* jple circuit showw*i00o cx7j*mew,c scn 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. Bulb X is ;oi(: kgn7+gu 5rhl-mrxyg 8e brighter than bulb Y. Assume all ciml87ug ;r:e 5kgi+ng yohr(- xrcuit elements are ideal. If bulbs 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 coul* ,sghvrbd*j45po6ytjyi t +m)g9:w eombs will pass through the identified resistor in 5 seconds once the circuit 6,yt9:bsgh pe* 5rvjj t moy)w+4*gi d 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 hav2bmsz-k9mmo. e the same resistance, z sm.mkob-9m2which 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 through the 6.*i/:i f9mn //pfgbgvi 0az2xl0 Ω resistor is 1.0 A. What is the power supply voltage V?g/0f n9z:vpx2ba i*i/flg mi/


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.27: Three resistorsrifk3 r 1yu42v R1, R2, and R3 are 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 vou3rr2fiy v4 k1ltage 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 connecte k *d* z .bmh+nl.*;/lw;md ebh;vsklxd in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipat v;ldk kxm*nm**+;lbzb e.sw/ .ld;h hes 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 bery( 19h(hhy f.(uoo rated 1200 watts and 120 volts. What is the maximum value 9u( ry1 hhey.(( hfoboof 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 60 watt lightbulb designed to operate at 12g lm5x0 b,g pxkq+zd :b,h rx(w,da3)q0 wgkql5d,,(agzqp30) r x +mbxhb x,d:volts?

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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 -/ fvlkenb,zmbs x 9k;i 1vb31a 4 ohm resistor that is dissipating 36 watts of power?bm93ks/,1 bzfvb1k;il-xv e n

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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 u2mu6 qry7-entxypg h n4d(,r6sed to press clothes is marked "120 volt, 600 watt.” In normal use, the current 7ny mdpgq(6n4rxh r-e 6y2t,uin 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 l ggt; 2ttc7:uby a circuit containing on2ul7g: tcg ;ttly 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 equivalent b 83el ud6zjc.resistances CANNOT be produced using all three rec3jz.l 8b6ue dsistors?

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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 oft.ih;jtmb+8fyx1s mp. b 2j8 ps yl.,z different values can be connected together in different configurations. If all three resistors a;fs18bh+.b j ,i.tytxl 8p2smmpz j.yre used 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 resisto vf6 eitx/+x2pr is connected to a battery, a total power P is dissipated in the circuit. How much total power i +x2 xv6ep/ftis 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 inq* qkg6 t4h3r1bwivf5 parallel, the equivalent resistance of the combinitb1q* hfkwv 5 46g3rqation 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 that0l1tgxn j-yz etudz8 -)f-(do n/ sor) it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time zu0 rld)e()-ns-ojtzx1/n-d gf 8o ytthat 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 resistg0s tajqde4jm+ / lq:+or that is dissipating 36 wattsjdqlj4t+0m:s ea/ qg+ 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**( oauci9 bem when connected to 120 volts. If tiuc(ae*b9*om he 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 much would it cost to keep a 100r g7hlwr7; yha27e)enW lightbulb lit continuously for 1 year at a rate ofrg77l;ee h)hwry na2 7 $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 ai m-(.ys,1bpv nq,2zv2 f (mtzr8uw tpower of 24.0 W ipuwmz(v.2qzr ,-a1( t snbyt8mv f,2associated 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/y:adi,d nu4c x 32txg 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 maxim/xyg43,xdiutnad c2 :um 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 batterisp,lt 7:k ss iqxn;50y is connected to four resistors to form a simple circuit as showxs0ntsl k;psq7:i5 ,i n to 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 connected to four resistors to form a simple circuit2u+/qhq rnkoeu:dcngy/ t9106l2o d: m ni, mr as shown to t e1,09d2r: krhny:mt6nc iduo /gqu2oml+ nq/he 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 ssz ng+7o13xt u8o1-ywb z+hglwitch and three resistors are connected as shown. With the switch open as sho8 o-hzs x7 +ygnlgu t1z13wb+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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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an idenyu wt5r1-( yl l hpxh9f0*3pqal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampeu*01pn9ylry3 (p- xl5fhtqh wres.
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 ammet q1fv xl5) .u gh+twwd9tv.;lly8fa:jer, a switch and three resistors are connectgv fwl )t y. u q1hv9jt.d8l;5fa+lx:wed as shown. With 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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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 equivalentpl0y*o6 dv;h0 t b9bws resistance? Assume th sb6 l9ytdpb;w0*ohv0at all 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 the right withlx13s xhi t(k6 resist31 h(xskltx6i ances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identical2j36 gvr9nfod resistors connected in a combination series and parallel circuirog 6f djv2n93t 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 connected in a combiimv;j3j*h wtxbq88 e- nation series and parallel circuibm8jhw8;i3qj*te vx- t 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 ident/zqtb*j )5lpr-2ix1av cph4v s 1omgv-d0r *tical. Which bulb v* z 4pl v1jgm0btv t xo/q)drrs5c*i-1-ah2p will 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 resistormp4 7qz. resy*s are connected as shown. With the switc7zr4q. ye*ps mh 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 ideabnni+fsqk(rb0*0 ( msg0 a2kwl ammeter, a switch and three resistors are connected as shown. With the switcsq(nw0bkn2*km (0b+gaf ri0 sh 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 battery, an i 4b,a a7w/ici .zg*wpcdeal ammeter, a switch and three resistors are connected as shown. ga /7cw.ci4ipb za,w *With 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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