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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, asop/ if/i3y0 an electric current 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 thrfoiy3s/0 /p aiough 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 arqr l9umck cy ey,1.2g3e connected in parallel, the_________each resistorgq32cyy.9,r1 k u mlec 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 throuynr;:ix 3i/ tsgh the thin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens because r3; n:ytixi/s

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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 househjqpcjlk /b4:4v2 p8l*o /fbc bold lights are being replaced with LEDs. LED is the acronym for which one of tbl bcoq 2b8jv jp:lp//ckf44 *he 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-sectigy d0 1+ct(czsonal area A. It is to be placed into a circ(sz1 yg tc0+dcuit, 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 ma5p4s,zr sq8aq(c*zyva v c)k3 terial. Wire II has twice the diameteqcr 38s)vvk (yqzcps5,z4 *aar 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 twice 7xgf, ya2xa bn , g,cw0 .mc0iy;voovr2sjt.8the diameter and half the length of wire X. If wire X has a resistance of R then wire Y w j8 oawvfm tb.,2a0o.ivcg2c,xn;gr7 0yys x,ould 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 lengthajb.;w0)bt hyvr7 k b: L and radius r. This piece of material is then drawnjk; w:bh rb7by.)av t0 so that 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 Thomas Edison wants to z 07d2m .1zo:gt5v.sh mu gfjomake a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb b70fohu.md2g z . 1smvgjotz5:e 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 z eg -y.(oq,nlsame material. The length and ngezl-,q.(oy radius 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 resistance R, are connected cozvx1,g tc2nqo t+881px :fqto a battery in the following way: “Two resistors are connected in series. This combination8cf8c ponqxvq t z:g+t2,1ox1 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 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 circuit diag:5tu9 ktny 2 gfo9y70e9ouuo zram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading f gu9 o2o90nt 5ez9 y7touy:kuis 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 compoungdnim v63v(*6s fa( cadt0 *zyd circuit shown to the right. The three bulbs 1, 2, and 3 - repreft*d6n gci6sm (y (*v3aza0vdsented 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 circuihjcu69f0ueq5pd/q2 l t at the right. If the current in all three resistors is equal, which of the 6c5q0ju2pql/u9ed f h 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 simpl g)3g kc;wy/vqe electric circuit composed of 5 identical liq gyk)c ;/g3vwght 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 truiiw0r hn/4u6i e concerning the simple circuit shown where resistors R1, R2 and R3 are h /rhwu46inii 0ave 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 conu0+b m4v; 1m/l/5md- uoxpqrpc;vy kunected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connectek o u1ypuq;vpbmc-0 ld;4u+/x mvr/5md 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 coulohi t1q7k/mq ,embs will pass through the identified resistor in 5 seconds once the circuit k, q1q7/mithe 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 th,rj(w6lxmc .t c8ap;me same resistance, which would dissipatecm;ma(lrt , 6xp.8j cw 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 twv)k*/y lpc)bhe 6.0 Ω resistor is 1.0 A. What is the power supply voltage V? pv ))w y/*lkcb


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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 s)d :vnkl-jtn oxm/.ks.pa 3 e8eries to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ωta:k p ndj).8mx /vnl3-e.osk, 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 connected in parallel smm+r g1re82xto a battery. Suppose R1 has 2V across it, R2 = 4Ω,gxesr r +mm281 and 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 120 volts. What is the maxim3o i9k jp*mt .qn(0ob9v-tc hyum value of the current under these con0qv 9 yt(nbh-3o cpotjki9.* mditions?

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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 120w*nx/7,kcncs ue -6 9wws3 ejk vo c w- kk/wucewxs7se*6n,3n9jlts?

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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 that is dissipating cxp8kex06uqh 6 ii1 6o36 watts of power?h6xiui cxpq e o601k68

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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 pre5 ekv:g(+nq52 xuadwpss clothes is marked "120 volt, 600 watt.” In nore5:pnavd+q k2(xugw 5mal use, 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 following resistances could NOT be produced by a circuit mc1ff1)n e95iv7h hxeyy vf /7containing only t 7eyv9y1x7cn/iffhm v h51)fehree 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 equival 2c9s k ;grj6ndn)jr/gent resistances CANNOT be produced using all/ n2 njgcg sd6)j9r;rk 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 in jh h0pog-q(o(different configurations. If all three resistors are used in a circuitogh(q0ph( oj-, 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 connectedtk4cy 4 or/xmisd/8-c to a battery, a total power P is dissipated in the circuit. How much total /idm cxsrt8 -yk4o 4/cpower 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 anw (:jo(ubc2 vmd R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about thu b(v:2jcow(me 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 thagt2 ycb (xl0z,t it has a resistance of 12Ω when operating at 120 volts. What is the mi2 tb,g(z0cylxnimum 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 curren g mkp4 cjkcjmop8+u;09.tnc*t flows through a 4 ohm resistor that is dissipating 36 watts of power?jg mkc9pc+4j8. ;0ncu*o mtpk

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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 139c2z 1b8yts: xv58ocwx )xxmd amperes of current when connected to 120 volts. If the price of electricityxv 2oyx)t8d:cbmcx w895z xs1 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 f - z8ut4jzdu:much would it cost to keep a 100W lightbulb lit continuously for 1 :fjz -4d8 utzuyear 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 jna+vs9fcf4 5) 3f hvvin a power of 24.0 W c nh45jva)sf3f 9+fvv 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 owns1me-pmtye:nrnq r* fva v*92k afj;/ 6 a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into an9rm y: 6p2*-*ef 1tmkavne a q/fvj;r 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 connecte/2 ij9g-*hhq3w rgef-octef2d to four resistors to form a simple circuit as / 3-eig2hofqwtcj2*g -rh9f eshown 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 circui r0e ju07dxg,0u8x slat as sx0erx8d0,a 7g 0ulujshown to 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 battej;xw,- xiwg33 eg7 wxhry, an ideal ammeter, a switch and three resistors are connected as shown. With the switch opei,w 7ej 3-3wxhxg xwg;n 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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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 f/3xl dr.u( v;oci4 xdebe;u)z97ufuswitch and three resistors are connected as shown.fx urif z9b;u/ del euc.xd7v4 );3ou( With the switch 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 ammeter, a switch and three resiz7:r5hsj/ s7ksfh cq/stors are connected as shown. Wi5 hsh:7qf /cr/j 7sskzth 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(3t26wmnh3n 8k av3fl o gucm0, what is the equivalent resistance? Assume that all wires are ideal,3n6a32(ohv3ltmgcm nuf k0 8w 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 with reslafz6u90n- 17h 1y spz 9fldwe9-fnsw61 zl7d 91za pe h0uylfistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connek;)vx1 8gtgyn t)* ki-mfv82ea 3jlkbcted in a combination series and parallel circuit xaj;yv f vkit821g*kmlb-k g)n8e3 )t 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 rj30it z.fjh 7a combination series and parall zj 37jitfrh.0el 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, all of the bulbs are xl; alm,6wh0gjdo) 6h identical. Which bulb wilo)w xm06ld 6,ghj; hall 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 a cmcvh2w u8)w9mmeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 a9 v82c)mwuwch mperes.
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 th-gv gu+c 6em 0jz.0hmuree resistors are connected as shown. With the switch open as shown6c0g m 0 eg-mvu+zjhu. 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 ideal ammeter, a switch and three resistors *qs*mk2rd a,x are connected as shown. With the switch open as 2 s,*m*drk xqashown 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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