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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 electrdci b4z 0;q5yric 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 directioniyc 4r;b 5dz0q 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 resistors are connected in paralle,lukxdh: m *.:cmcmv+z;tir5cl2 co;l, the_________each resistor is the same.cti m:.2d ux z;cl,m k olhc:rc;v5*m+

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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 lightbulb causes the filamed +,q.:qjd)ta) 5s(ilj ecui snt to become white hot, while the larger wires connect squ) (t5q:jc.,ddi jei)l+a sed 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 w;qz +n8m-x6uq,f haf5r(vivu ith LEDs. LED is the au8 m, xhz (6 v;-afuqni+fq5vrcronym 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 3be.2wu/odz jc-) - 2 zcovsvzlength L and cross-sectional area A. 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 o3owdcz/zjs2 -2 eb)vu-.cz v 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 matergc pyg6v;7um4 ial. Wire II has twice the diameter and twice the length of I. If I has resistance 4 y6pvcmg;ug7R, 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 the diameter and half af- 7mx(.nleuthe length of wire X. If wire X has a resistance of R then wire Y would afx me.7-(u nlhave 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 pi8c a amxr;o i09qlv7kp6q.fvn0j+5y mece of material is then drawn so that it is a cylinder with new length 2L. What happens to vj 6pqrf7m;i.vl8o+qkx a m0cn5 ya90the 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 make a brighter light bulb. He dhq+ -bhl3wyg,n 7ne8qecides to modify the filaehbg, 8l3+n-h 7nyqqw ment. 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 madefpwp3;tz* ut 7 of the same material. The length and radius of each resistor isup 37;wt* zftp:
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 resistax hrzcj:,2nqbt*7zh .nce R, are connected to a battery in the following way: “Two resistors are connected in series. This combination:z. t ,hqxzb nc*h72jr 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 dig6r4i. jz4, jg mfn-fjagram has internal resistance 10.0 kW and the ammeter has internal g4ijm j., fzgn-4rf 6jresistance 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 compou9f*w*iervrdw* 2f b t8nd circuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in the diag**vi9 rf fwdr8*etw2 bram
- 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 th0*ncq sg3r pu-jd(7 cxe right. If the current in all threeg cs jndxcrq 7*(p-u30 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 repr botg4p)z09ee 2,i shnesents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cell,h npi0ges ot 4b9ez2)s. 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 simple circu7nmek qb5+aibx *.7nlod;4 ,za v4 owtit shown where resistorsil7e5*4xtq; ano ovd m+7n4bwbk,az. 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 j:mi2xpybj*u- tfyf.m.:5i g brighter than bulb Y. Ai y.2mgtbif:j:-*.ym5xj pu fssume all circuit 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 coulombs will /xnfd. nr g3n)j-sg.p pass through the identified resistor in 5 seconds once the circunx-..f)jr3sdn pg gn/it 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 thew bt t,9p 86z:5hqlukv same resistance, which wou 69uwbl htktvz5,8q p:ld 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 dia uzsn20cp ue5.gram, the current through the 6.0 Ω resistor is 1.0 A. What is the power supply volts5 .uen02 pczuage 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 aa6d si +fv(-eo)j*gz4nr l /ujre 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 voltage acrossj aon i-u 6e4)(dg*f+lzr/sj v 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 pare/g*ws08xr: l v8b joaallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipatess8bx *jvg: alr/ 8ow0e 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. rk -2k::+wy81ycxv *pmz eyz mWhat is the maximum value of the current under these conditkz yp8c*k+ 2::wyx1v ym-em zrions?

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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 wattgxptd3j.xg . / lightbulb designed to operate at 120 votxj/ g.dx .3gplts?

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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 dissiurq9 8bic4lo-pating 36 watts of -o 8rb49ciqu lpower?

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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 8hi/ dy k1c /tx80 koowa/+ljbis marked "120 volt, 600 watt.” In normal use, the current in it8/18ochotka/0lbjk iy /w+x d 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 b*ef dofz-c / rydh 6*c0c6l+jye produced by a circuit containing only three identiy 6+/yd 6*c*cdffoz r0h- cjelcal 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 05/tv ,wc7v r (f6whkcthi4ypthree 1.0 Ω resistors. Which of the following equivalent resistances CANNOT be,v6y /(7p cfcww4 r ith50ktvh 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 sx 5l5yeq6ehrz w )(/sbe connected together in differenthr e5 lw5/qxe6s(yz )s configurations. If all three resistors are 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 resistb(;52f2 snmgf/s egbzor is connected to a battery, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected i f25sm f;g n(zbe/sg2bn 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, havinv+k;u ij025,jtq xrg ng resistance R1 and R2, are connected in parallet2 k+;r njj,xq0ui g5vl, the equivalent 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 such dphdy/m )o+)fof83k s that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of timem3 )fod8kp +osd/hyf) 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 dissipating 6 khb7kea;k) l36 watts of7kk)lh bk6ea ; 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 dr0 ar 52jkdvmu.wy9-suxs /g c,aws 13 amperes of current when connected to 120 volts. If the prsg,0 m./dx5jwsu- y avrcu2k 9ice 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 aax,8 cf/bt( z .r.qhqv 100W lightbulb lit continuously for 1 c/xb qr( avz,h.8 .tqfyear 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 resultsqw.gzs ;nkf )x-/es30 z44e0l h f(d*zbewrw m in a power of 24.0 W associated with the bulb. Which one of the following choicwgz.ww s qenxh;lfd3 smbeef0 *r4/k(zz-)40es 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 owns a computer rated at 500xrf 0m5kl h pi98ysf61 qa g:m:0o8mhz 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 9 lfpqm06rsk gmm0 ::hxi 8yoza81hf5number 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 resist5xpd:m5kqqyrj9 w+v0*lp p e 8ors to form a simple circuit as shown td : vpjywq*5eppkxm5r +q90l8o 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 stbjp : ()gu q2*eznn*iimple circuit as shown*(:t *euj)p qz2ngnib 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 battery,)w31 , osdhqide/h:dwh9o b.m an ideal ammeter, a switch and three resistors are connected as shown. With the switch open , )d/obq9wh1e.dh iwd3ho m:sas 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 switch and tz+lck mo-,(wh7 -ver rhree resistors are connected as shown. With the switch open as shown in trem wl + -k7r-coz(vh,he 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 th p z uk)w-siunp951sw4ree resistors are connected as shown. With the switch open as shown in iuzun 9s p4kw15-)psw 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 rightupn8v vbex)v-q;en1 q1,;z vl, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistalvx;q;,- b 1u81vqnzve) epnvnce, 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 resista4g0 *9 jnq :tkby,welpnce of the circuit shown to the right with resistaneq, bwng*pl yk9: 0j4tces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 be z:c4x1 6kxpe.ex;an jlow shows five identical resistors connected in a combination series and paralle6.jp:;1xxee cazkn4x l 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 connectzonk4(9o (fi29 rro nted in a combination series and pan2 o4r9rf9iktno o((z rallel 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 di +5ljrz*.pkd nagram, all of the bulbs are identical. Which bulb will be the bright5pdnr zk*l+. jest?


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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 r)t3 t -kmgshf;* ;weayesistors are connected as shown. With the switch open as shown in the diagram th s)yh;ekf;m -t*3wga te 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 andd2 nz8coabat 9s8:cn2 three resistors are connected as shb9n: c dnz82ao sa8c2town. 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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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 )dv-f84t ixjq li e-s;three resistors are connecq-etji i8 )sf ;-xdv4lted 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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