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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 -jfp c6q:qdj )exists in the metal resistor cocjpjf:)- q6d qnnected 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 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 parallel, the_________each res, vvfe., +azv vak:;jeistor is th;v+evz,e:ak v.a, jf ve 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 filamenig *us3gfp6w3 t wire of a lightbulb causes the filament to become w wf g6ius3p*g3hite 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 replaced with m. *1tyluhsi8da,;yj32cef a LEDs. LED is the acronym for which one of the following c8hu.*3c yfali m1j yast,;2 edhoices?

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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 l3ho -67n ybj,uklkl cj7u7uw3ength L and cross-sectional area A. It is to be placed into a circuit, but it first must be ulkj3 nkyj3,6 cbu-w7oul7 7hcut 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 material. Wire II has twi,kil4,5vu rdhce the diameter and twice the length of I. If I has resistance l 5r,kdvu,4ihR, 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 tx.s)vff; 7acxhe diameter and half the length of wire X. If wire X has a r7fcxaf s .v);xesistance 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 resi(c k:v0 y;mezkstor has length L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material becaus;: y cev0(kkmze 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 lw0s5c4x(me/ f+w fxmg4tkef. ight bulb. He decides to modify the filament. How should the fi t.e5+sw kfx04gc( /xw4me fmflament 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 made of the same m qma2+0r.x(fj5 ms pm(b)jd+1ijhv g uaterial. The length andjqs(h 2f u0 pv)g(m+j.m5bir1x j a+md 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, eop g+c(.4eiur;nuhdnkin8 9.ach of resistance R, are connected 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 in9n4iun. ;h(+d i ruepgn.k8co 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 has internal re,8 pbmm5e t8 leb;9i 4+redvs9ah,u lm+dd-xr sistance 10.0 kW and the ammeter has internal resistancbe8ru+tm+4eh-a m 8x9diel5r db;lp dv,9 sm,e 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 risqso dncfjuesy )xn:5(.6 d9:ght. The three bulbs 1, 2, and 3 - represented as resistors in the )ys9f(5 6n: csdejx suonq.:ddiagram
- 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 right. If the cbnv/ t0m, 1 g6h+pvf8aur5 -ghfx2jgv.bjcj0urrent in all threeh1b25-g8+px 0v fcfj6ntbj jag0vv.grmuh /, 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 repre-t 47/( jdsmafv1 fdcqsents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Whica q(sdfc1-djf/7mv4 th 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 follot::z as-0.l*8y:o.w luhron7k n jkpawing statements is NOT true concerning the simple circuit shown where8-wj:sn*a lzp .:0:ln ohyrku7kto. a 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 iyt,/l(n*e c /zwi6sn u 1d;6snfjsg t16q2rgws brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connec r/d ( 2y1gt6nf*cs ql1tg;,j/6ewsnns uwz6ited 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 +,bd);:apzha7n fl aj pass through the identified resistor in 5 seconds once the circuit f 7+a:hnz,p )adj; blawas 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 f:mtw a z8)nf-krb3,uin the following simple circuit have the same resistance, which would dissipate the greatest powetm w f:a)bzrf3 k,-u8nr?


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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 6.0 Ω g9ln3xbv+b9tp;y :r u resistor is 1.0 A. What is the powlgp3 9b;+:bxnvyu 9tr er 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 resistors3v1iz7m 46+7 ot7mszjraa,px * nmzqc 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 voltagivxpr z71s 7mt z+7n*cm m3,4a jzqa6oe 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 co(mj3raafz. u )nnected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates aa3(j)zu .frm 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. W xt3.jumv-a1t hat is the maximum value of the current under these co-. m1jvuxtat 3nditions?

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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 resistx:m lf xoa0(wz3;i; k-svhfgxea0 0p1ance of a 60 watt lightbulb designed to operate at 120 khx ;gp-x1o0 0a;0l3zf:(vwfaemix svolts?

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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 o;7 a 7bx5iksclhm resistor that is dissipating 36 watts of powxas; i lck7b75er?

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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 volt, 600 watt.” In+bm 6 o)rndl)wz 0p- )i9nlcll norml ) p0il9wd))lz+c6nb -mrnloal 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 folloy 7/, )4gcbywot ykcyf0eyng1+0i(sz wing resistances could NOT be produced by a circuit containing only thr t wyy1 0/sy7)ykcbg i+z(0engyfc,4oee 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 trzk;5i: f/cefjxy*c)lt+ k 9 the following equivalent reck9ktri/5 xefl) + :jc;z*f ytsistances CANNOT be 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 be connected together60k*bnnq-h(ep 4it bcku:j e( in different configuqbuce(b4-nt(j :n p*k h 60ikerations. 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 r 9gfuoe l:bx9vwbl3jp )7bve8b- *r 8fesistor 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 in series using the same batterjor *gb: -p)7bbvfxf9b9ueev 8 ll83wy? 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, tsu 2l;lku,2phaving resistance R1 and R2, are connected in parallel, th; k2plsl2,utue 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 that it omj+bg-whl8y t) t8mc, ,p v+hhas a resistance of 12Ω when operatij8w mm8hht,v)py -lg+t ,co+ bng at 120 volts. What is the minimum 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 current flows through a 4 ohm resistor 3 keibg ycoro(6)6jia-ow(* ythat is dissipating 36 watts of powerc y6oky w -eb)6(io3oja(*igr?

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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 connected s6larsfo9 e*1 w 8bps/to 120 volts. If tw slba 1o*rs /sf98e6phe 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 kee)mqj7 or :hewel3 cn61p a 100W lightbulb lit continuously for 1 ncq:eljw6oe h3)r1m7 year 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 in ail5m n,33qd xubn:pc-*3x/lflc ( yb r power of 24.0 W associated with the bulb. lylnm3x5c (q,p /d3u-blxcnr 3fb:*iWhich 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 owns a co xief0sfwu29+ mputer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected b i9xwuf0 +fe2sy 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 conn d+fjrjd83r-m ected to four resistors to form a simple circuit as shown to td3rj+r-f 8m djhe 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 fkfetirvu87 k byz7*bef8 ;fd7p. m+g(orm a simple circuit as sh d*8fk7i vpemg bbufz .fy7er+k8(t;7own 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 thr fycif.f c0ca-n +d:5cee resistors are connected as shown. With the switch open as shown in the diagra+dc n. c fffcai-:0y5cm 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 am4qp : /xx12cunuw ocs*0hqwt 0meter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.p/*4 1 2qsoc x uq0uw0nwcx:th0 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 threkrx7x3xd(n kudj/: 3 s1ynf;r*edg t3e resistors are connected as shown. With the switce rkxt;3x3jg/xy3 1:nd 7 knf u*sdrd(h 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 e e0hu-4ifmk:;mtf y8/t n) 4 q;0kyewdnt4 juyquivalent resistance? Assume that all wires are ideal, the battewhe :4 tfy8uemt q )n/tjku;4y0fnim4-d0k;yry 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 5v:tpg9orx)l. 6iml4zuh h)ushown to the right with resistance)x.i ul)9 hrl mv:h64pz5guots $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 c z1how :plv4,pwwd--five identical resistors connected in a combination seriwz: o-vp 1,wcw 4ld-phes 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 belob2+ nmigm35ysw shows five identical resistors connected in a combination seribm+m igy2ns35 es 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 +)l uxtn/x qjfaz v82s5qj9)cyt*d /aidentical. Which bulb will be the brightest? q +j )a/ct2*l txdyfn/9z a8suxj5qv)


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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 resistorsuzt -(9bhkee(pn (-h xtk0kr 4u,n2 ii *kjc*b are connected as shown. With the switch open as shownnpi,4ux02t (cetkj ku((*- h i*he k9br k-zbn 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 ammeter, a switch and three uz*h 9s6c ap t8a9z*jyresistors are connected as *zj 8pcazha6st 9 uy9*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, ;*peof *dx9b 8a4 ddzgan ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 o*dd8ax;9fp dgze4*b amperes.
When the switch is closed, what would be the current in the circuit?


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