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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 metal resistor c r.zhwqg a9uy4(lf (6fonnected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the direction of the electricl6(fgfhq49 y r wzu.(a 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 rb- c yx lc9 1m28y,(td j5ii2+conpnxdl;,dezesistors are connected in parallel, the_________each resistor is the 21xx ;,cy zo ienbc t,c9d2mjyilp5n ( 8-d+dlsame.

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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 throug1 .aqj,6y6ua scadx mg5lnb*1h the thin filament wire of a lightbulb causes the filament to become white hot, while the larger wiresu*q56a gy bdl x1,a 1m6.sncaj 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 household lights are being replaced with LEDs. Lc6e,*z4 3 fqve/zundqED is the acronym for which one of the following cho6 qe/zu*qv4ze3f cdn,ices?

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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 cros3-qfhk vv.+e ps-sectional area A. It is to be placed into a c3pvh v.qf-k +eircuit, 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 yy9yzdp4 4ko*of the same material. Wire II has twice the diameter and twice the length of I. I p9 *z4y4ydoykf 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 bute;w,d-20savo9uq9dn +v l xmthsco: ) has twice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would hu-asx:dlq;vecdo 9n,h9st+0m)ov2 w ave 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. This pieo*7 v,tyjd wl)c (g6hqce of material is then drawn so that it is a cylinder wiq ht )6y7 o(jwdc*v,lgth 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 tzds;2 33rgni 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 lightbulb t3dg izn;r2s3 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. Tj+ u0l/rwb .pgmq;osn -q.p 2,abxb0c he length and radius0.-csq,ljp2;gq 0 / amw+p.bb nuoxb r 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 conr14 qs*/m9y vf p5tomp .;2fgboy wa+knected 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 four*q+fosg pbkv ar.9o4mm5ywyt/ f p1;2th 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 diagram has i:h gae yj,,e/xux3 5z kk*rt0qnternal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter readin*jthk eaz 5/ e 0:,k3qxxguy,rg 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 circu,b/ulp b 9- s*2tpzvghit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in the duv-bp29sz ght,/pbl *iagram
- 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 ele3tnybkky c+5 kzk0 6)ktt/ mn*ctrical circuit at the right. If the current in all three resistors inbky/3t)myk c k+nk5k0 6tt *zs 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 sii4es+ 5ogner+ mple electric circuit composed of 5 ider+ 5n esgo4ie+ntical 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 txe xp iz) 1-es1c u2d47tufc:the simple circuit shown where resistors R1, R2 and R3 are hat:ue)pcu7x1tcxd1 s4zfe -i 2ve 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 11iho pqq fun23n8p3 useries to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. n338n 1u21po fpquqhiIf 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 coulombs will (5 yj.iona.; *wa.ghg w:zkcv pass through the identified resistor in 5 seconds once the circuit was closed? ha(w:;i awjc.y. oz*5 kgn.vg


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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 then8ed0-wn nrmvv:y,p9 an 64cs resistors in the following simple circuit have the same resistance, which would dissipate the greatest po4nn -c6msw, pvrd a80 v9:ennywer?


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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 t.9m lrdhp/xgj,0krwy 1v8 ma(hrough the 6.0 Ω resistor is 1.0 A. What is the power supply voltagm hm8 0a,v1jl rxrgp./ yk(w9de 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 s+ etum/x1d0bh eries 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 tx+ /mehb0u1dof 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 differeo-xfua:;3-6qas m mswx z9ki0nt resistors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 ;a-o3zxw ixau6sm-fs0:k 9mq 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 1.+toq; or,bmv 20 volts. What is the maximum value of th.;t mo+vo ,bqre 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 120e3 80am(hfw p tys-:rq volts?y3 -rw:mq0p (f haets8

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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 4p41.*fvk5th w jtmb6 b ohm resistor that is dissipating 36 watts of powv f156tbm wbj4pth*.ker?

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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 "120 vokg(zp /y-cw(oo(k 0c rlt, 600 watt.” In normal use, the current in it k (cozo((0p kc/yg-rw 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 resistancesf low7(q58r+0oz sekl could NOT be produced by a circuit containing only three identical 6Ω resil0r o(+f7 kz 8lw5qoesstors?

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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 ez, (rlbv,5q ww:c4n gjquivalent resistances CANNOT be prod:5( wzb,4vnl,cq wjgr uced 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 o+q--5b ynsr gaugb1s6f different values can be connected together in different configurations. If all three resistors are used in a circuit, how many differennr-a sg61gq +sbuby-5t 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 batt (xy 3 6:1v(fyxmbgtpjery, a total power P is dissipated in the circuit. How much total power is dissipated in a circpgv1 x(3bjm:y(f 6 xtyuit 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 anpttg x+tiv8 po3 8p;w6d R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements abouigv 3ottt;x+wp8 p 86pt 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 g*vx uu73po5vxj(d z,8)bt t kof 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg of5)(udtgvz83vu k 7*poxxj,bt 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 oh- m75kkgt7*5n+ mx rr-) zxivihr7 kdxm resistor that is dissipating 36 watts of power-dr xhi 5nkrzx7*k7x g)+r-t7i5 vmkm?

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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 conp:j fdt):i87pxlvkx l-g8 t-vnected to 120 volts. If the price )-i x:l:jvkdfxt- p8tl7 gvp8of 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 continuo r+wjrjb31 *pjusly for 1 year at a rat 1j 3jrrpb*w+je 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 inr jq0j/4yd 6/et6u(f-zl hhxw a power of 24.0 W associated with the bulb. Which one of the following choices best rep( dw/q4r fh0tezh66yj/ j -xluresents 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 in a 12:eb89uk-ri 7l6xt lnz0 V circuit. If all comt z8 -n9xr7bluik6e:lputers are 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 rema zr-is*q wt1z,42e hsistors to form a simple circuit as 2z*ht zs 14m- raq,weishown 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 resis*a7tko4k fo wvj+jg++tors to form a simple circuit as shown f ++ka o4jvjk o+g*wt7to 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 anhh9x 9la5. 5 bwsagyt(d three resistors are connected as shown. With the switch open as shown in the diagram thga ybahxth9l59(.5 wse 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 switch and three resistors are 8iz zw5nt c.q*e2f t/tconnected as shown. With the switch open as shown in the diagram te.itftnqt8/zz2 5*cwhe 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 t7h/oc276ig k a7mif3bjuk o 7dhree resistors are connected as shown. With the switch open as shown in the di2ji7 cf7m3k77ogbdi6oku / ahagram 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, wjaxl.gln ;x16i e3ms2hat is the equivalent resistance? Assume that all wilalm2nx 6jg xi13s; e.res 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 q7cj rni4 6 n.5xrg,cmthe right with resistann4,76crxm inj5. qcrgces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 n 0 tp*4;ikl 02j1eb -z/hid hpoae3zfcombination series and parallel circuit to a voltage source. hdo a00*l/p;k 1tph- n4iz32zei jf be
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 combingo ;gdq7nlcm 9er71z evx/-b+j vg;*jation series an vjb9;g+ jdo-rxe 7 lvqnz;g/c 7em*g1d parallel 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 bupa(q sm +jztt52 ram80lbs are identical. Which bulb will be the brighteas(2mq z m a+tj0p5tr8st?


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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 swwvdga6q vt72*b4) cj fitch and three resistors are connected as shown. With the switch open as shown)*2g7 4jqavfb td6 cwv 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 ammete64n.fc gbfag ih (;+ ;wplhcp+r, a switch and three resistors are connected as shown. With the switch open as shown in the dcihg+; p+ fahc;bpwl.n6fg (4iagram 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 ammetzeh((0 ,zs6oxhim;ct*i 6 swi er, a switch and three resistors are connected as shown. With the switchet(;mco6 , wh(xszsii60ih *z 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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