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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, pbc x 8ol+bk 6nuf5kix);s7,v9owjf .an electric current exists in the metal resistor connected to the battery.c9 n b8 6ok+w5blx7.sfj)p;kf uovix, 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 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 resywxuzp 3oqpp;4h6.-7qh* tly(o .fghistors are connected in parallel, the_________each resis4.fly oh7h.p;yqgz (q3ot p xw *p-uh6tor 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 the thin filament wire of a lightbulb causes the filame nfnfvb:,dw,ti y6v/7 nt to become whiinw,:d 6n/v bfv t,y7fte hot, while the larger wires 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 replad: sr*6mqnsd)al qv9rud,/l ,ced with LEDs. LED is the acronym fa d:r ,*svs ,d6 q9uqdmn/l)lror 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 o5yw 9 -mr.cu8*qpmvg has length 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 of the new resistivity to the old resistivity of8- y.*ucogmm59p r qwv 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 Ihul4jth6/xb :s 95 i omt6zbl8I has twice the diameter and twice the length of I. 4jx t:bl/zm96h 5b li uot68hs 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 the diameter and . + a,znrv/4 xg5lsyvdhalf the length of wire X. If wire X has a resistance of R thr4ylva./ 5zgns+vxd ,en 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. Thie7jw 3c na1ynzo2p ;2gs piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this materian ngc1pjwe3y 72oz2; al 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 wantsq)xi( v6i(dp8jv v j)7ei tw82*oocpp 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 lighjp 8iwq2v vidovpj* 8)et(p6) ico (7xtbulb 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 resistorsjn7u jvxv zk- v /v7zc1m4c,6j are made of the same material. The length and radius of each resistor is,77k zmu/4ccnv6jj-xvzv j1v:
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 conn9 +helxbtar a 4 :*5cypqd0n3tected to a battery in the following way: “Two resistors are connected in y dh*rxa9np+ta0etqc3bl5:4series. 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 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 b 9utdpd3pbv )ti9m-m)gw. (ym s:k 8qhas internal resistance 10.0 kW and the ammetermkm u3 dbwt-p9yg .t:8) qmi(dv9s)bp 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 right. T e ,u77j/ggvbohe three bulbs 1, 2, aggv,uo e7j/ b7nd 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 electrical*xzwsyy7 f62xf31- 9z nvc u00ukvsog circuit at the right. If the current in all three resistors is equal, which of the follgu wzyn79ys0f*f-0 kv26zcxu 31sovxowing 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 simzuqfa37w s/nnf6fu ),h 3 s2kw*a2pmxple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. 6f3*w)3mzf 7naw2q/u, h nsaus2fkx p 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 Nn2mo osg)9id( OT true concerning the simple circuit shg dnim(o2 )9soown 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 intd jv2k1fwj3 loo* 0i6 series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If *v0 3jfi2 wdtkolj1o6bulbs 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 pass through the identified+zaj, oj: r6qi 8,iecd resistor in 5 seconds ojoz ed8r6i+:qja, ic,nce the circuit 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 resistoh /mhzz dc 0h)ru 6;3gx:owa:ers in the following simple circuit have the same resistance, which would dissipate the greatest powe:0hr6 g )a :c/hu; zomwez3hdxr?


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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.*3 )oj0bzkz x rai50hd/soi 9k0 Ω resistorx 0a0s/dko) zb 3k*oz rijh59i is 1.0 A. What is the power supply voltage 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 R2 g8dtyt atb671, R2, and R3 are connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistany td6g 7bta2t8ce of 3.0Ω, 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 to a bat63hn wf i-om4ha2;t bvtery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. Wiw236tmn h4fo;v-h a bhat 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 .-+ ,bt ksunk)w/yodj20 volts. What is the maximum w t.s )-/ky ,nob+kdujvalue of 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 dcyji-iprz,e 3 e:4mgwvux;:( biw 84lv: ;tfto operate at 120 vicrv 43edf: g(tm-8:wx zyu b e;v ;i:w4l,jpiolts?

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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 i mbro,lm+-7l through a 4 ohm resistor that is dissipating 36 watts of l-7 l+bmm,iorpower?

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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 clothwt b1o ac+ r9xd9qi2(sr63 cv yuo3rm(es is marked "120 volt, 600 watt.” In normal use, the currenorrdmit2+(qu c o9yr 6(3 csa1v9b 3xwt 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 yh)oe-m355 3s; boumcrf:7*qqn ryfv by a circuit containing only three identical 6Ω osy-bf:u3 ; m 5fqh)ny3 mr e5o7vqrc* 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/aa jlnzk9ai)q r2j* . three 1.0 Ω resistors. Which of the following equivalent resistances CANNOT be produced using all three resilk.9iaa )r jn az*2j/qstors?

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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 fxfjj28dkv ue-* 2t ,tdifferent configurations. If all three resi2ujf vkt xftj*,-d2e8 stors 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 resistor is con 5xs6o6om 7re f2jue.bnected 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 in series using the same battery? Assubm o. 6ejfes2r 5x6o7ume 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 in4d4t 8 l 59/nrjowryei parallel, the equivalent resistance of tw/ 544e9tindj8 lorr yhe 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 dcrqi i nem8xwy2cs3q+s0/65 o esigned such that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg o3y8 qs5s cqrm0eicxwn+i62 o/f 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 ub)u.rh7zx;g9 + kh8luk nbc1 that is dissipating 36 watts of 8 ucurbx g.+l9 h1;nkkuhb) z7power?

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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 whenv3f9e re04 s*noygf7x connected to 120 volts. If the price of electricityg4f fer yn7s9ovex 03* 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 l3*(u( .-juqa v:7eq4g v8bwuuo viv csightbulb lit continuously for 1 yea.u 4qbuvvug oev(i 8( jc7 :v-wsa*3qur 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 current5 -6z5q dfelvt of 4.00 A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best r 5dftq-lvz65e epresents 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 sitlxo2 v0me;sv t3:2p fx owns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected blvxvfm:stp ;e2 032to y 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 resistors to form a spa 5qu rc2tkxa)e83 f8imple circuit as shown to the3 p)q2tu 8 akfc8er5ax 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 rey 7- 11f0l su j8xkb,qi*tlrissistors to form a simple circuit as showny 1*-,ri807qltjulbs fkix s 1 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, an ideal ammeter, a switch and three resistorc3; zcx0e:ql4g(gg njs are connected as shown. With the switch open as shown in the diagram the ammete3n(:4cezjqc gl g xg;0r 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 r( 4taro14mk uresistors are connected as sho r1kurat 4o4(mwn. 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 amviet1 ypy18b5meter, a switch and three resistors are connected as shown. With the switch open as shown in the diagrtpb8ye 51vi1 yam 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 t9v v ,weizd+ nbea7/l/he right, what is the equivalent resistance? Assume that all wires are idv,v 9 b+/dai7 wz/neleeal, 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 cirq1ddah+g 4n eao.n/+rcuit shown to the right with resistan.a+a rddh+/n4g o1e qnces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identif: y/hk5qsikc2 kdt/ 9cal resistors connected in a combination serisc9f/5dk/ k tk q:i2yhes and parallel 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 identibj jj1n44 kp l, ;r 3xcp6-p fzen8*pd)c1nbvycal resistors connected in a combinatio 4*n 3bf pk4jc;n)rzn61bypxp 1pj,l-8 jecdvn series and 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 bulbs are identical. W2ezkyy;f z,y,hich bulb will be th2;z, eyfykz, ye 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 resistorhaj7ach/l1; ls are connected as shown. With the switch open as shown in the diagram the ammeter r j/acl1;7 alhheads 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 switcx*krdev, xf (f :hnapp:bkf/gr:(4u1h and three resistors are connected 1f h: kx4r /rf*be:d (,u(axgn:pvkfpas shown. 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 three ryldjj7 -tbs. gz 2e1x5esistors are connected as shown. With the switch open as shown in the diagram j75gejsybtz- .l 2 1dxthe ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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