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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 co xk,k: vuc ( j q9ff244z:jn)k+nbiuojnnected to the battery. Which one of theqnckj 2f4j::vbu4(9u,xkf i)+k jozn 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__4 dg /+r ck/sf;nwy2dh_______each resistor is t2d+c/gd w /hkfs yn4r;he 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 h9 n17huzzks x ullpax j9:/ a32/bq*ewire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much 3uznp*9lzxe7 b a1ajlhq k9hxu//2s: 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 householdiq63i4coj1 5 pw 8 n7i6nsyagi lights are being replaced with LEDs. LED is the acronym for whicsyio pa5i66 gin3w 748 jnq1ich 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 length L and cross-sectional area A. tic6 q6n*k1h aIt is to be placed into a circuit, but it i 6ktnq1 6ch*afirst 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 oa+c/iurs d/1 pf the same material. Wire II has twice the diameter and twice the length of I. If +si1a/u d/prc 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 thn.b4bmr3q .k ce same material but has twice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would havemq . 3c.nb4rkb 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 resistoroi(ku i t*i30ys oir;1 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 resiiisu;30(*1root i yk istance 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 d7q,8x fgvjmn9ecides to modify the filament. How should the mj78xg,nfv9q 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 cylindricalh+kba8o ug*f/kf2p/y4 o piv9 resistors are made of the same material. The length and radius of each reso/k2f8gu+ahkof / p9p4 iybv *istor 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 connecteu 1 l9rq8a0 emfja -dw(d8oxe1d 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 seriesrmqjd a(- e 8w08f1oxeadl1u9 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 accompanyinr8 w8e2c qwy3/ jjop77)n0hiw1uxpbxg circuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading j8y)ib0u1x78/3hjw 7o wrn c e2qxppwis 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. The three bulbs 1, 2,l-s fy79+sg,zw l0s.nib7b dc and 3 - represented as resistors in the diagrnzy sflgi.w7 bc+0ls,d79 s -bam
- 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.uy*pq 7p+eef1ofjn 74 If the current in all three resistors is equal, which of the follo7uynf*op7q4ep+j 1ef wing 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 representsqu8wx93 oma -v a simple electric circuit composed of 5 identical light bulbs and 2 flash3wv qm-ux8o9alight 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 the simple cir v26q ym3ujwo whb 3wqu06w/h;cuit shown where mwj2h36ohu3 ;b06/ wqvu wwqyresistors 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 andYc-.8 po1t gzaa 4jxk 79qou)no are connected in series to a battery. Bulb X is brighter than nxjat7 pa8o o 49k1o)uc.-g qzbulb Y. Assume 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 pass through the identified resis, ep05tdeg jf7tor in 5 seconds once the circuit was clo7,g0fepd5je t sed?


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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 simplesl:wjqv+,j(ntuok c m4 0g/fl ::8u w4hod)zw circuit have the same,l ugw/ozvqwho 4:n dl:4mf8(jjuw :0)kt+c s resistance, which would 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 d8m pou)d0 :dr-b7*niz b(t dkqiagram, the current through the 6.0 Ω resistor is 1.0 A. What isnk(0d7:mtid*d b o) pqb8ru z- 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 R1, R2, and R3 are connectv) 1i( fe+,mdrgz*xj oed in series to a battery. Suppose R1 carries a current of 2.0 A, R2g ,(+o*1rf)zjmxv i de has a resistance 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 parallelwi1)79 ppyx+ tq;*qc rfk zz3s to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What pzkpw xq)1q*fy; cz73t9sr +iis 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 ratedl-+wzm k07pne21 yg;,kquz qq 1200 watts and 120 volts. What is the maximum value of the current under these conditions q70zz ly2 enqpu1,;wm-gkq k+?

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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 ew03x+ wzf( peof a 60 watt lightbulb designed to operate at 120 vx3e+ ewz(p0w folts?

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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 m4d x uwn4qaw32.maj(i7 jwu; is dissipating 36 wa.jq 3w aw;i4jdmam47w(nu ux2tts of power?

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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 c h-nme*vr:-b "120 volt, 600 watt.” In normal use, the currm cen-h -:bv*rent 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 fow2lcelscnz 6)w .8f7 ollowing resistances could NOT be produced by a circuit containing only three lo6c. cn8)ewwzsf7l2 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 resistoyk5m ;mhl82c vrs. Which of the following equivalent resistances CANNOT be produced using 85 ;klvmmc yh2all 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 diffe;,rqj eo91lr ywfxlq+7. hb3nrent values can be connected together in different configurations. If all three resistors are used in a circuit, how many different ynx; ,qw13l7+joqlr 9ebr. fhvalues 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 connectedjbq45c s,itv0afd9i)e(sd 9.ui yi 6e to a battery, a total power P is dissip6efc ,suy v0tiidae.d5jq(sb)i9 49iated in the circuit. How much total power 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 and R2, are wpcnn:04 plrgdf8j;k7 :s j2 aconnected in parallel, the equi :cgrf wp7n kna s8;4jj2pdl0:valent 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 designedn 3n8rk+b:/yxg89 szut/g ru v such that it has a resistance of 12Ω when operating a bgy8xt g+:rnu3uzvk8n9/ /sr t 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 that is dissipavy10gpiwr : g.ting 36 watts of v:r0pg1 gy.wi 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 draws 13 amperes owqk;evi.y;q8n5nz 5z 2v odp* f current when connected to 120 volts. If the pricinn5*;vvy5zqd e82ozp ;w.k q e 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 dto-q 2ni2+g:s(josj a 100W lightbulb lit continuously for 1 yea:ji+d 2 qsnt-2og(os jr 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 a power orh/i(;zr( 1/pw z,fqnyoee 3xf 24.0 W associated with the bulb. Which one of the3xy,wi ez ;/(1q/horrp z(enf 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 ofb-)jexy)as do*t n/+d0 zon3u a family of six owns a computer rated at 500 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 number of the comp- y3do *x)no/+denz ujb s)a0tuters 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 simple circuit r+q k*v.pt/h:rg *vrc as shown to .r cv+/qk: ghr*t*r vpthe 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 simp-s; n c,jisp3rle circuit assrc-3ip;j n, s shown 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 dn l vreb ph,eem7 .g79*i3z3g)f pm5aand three resistors are connected as shown. With the switch open as s5ezve *)bhg pmpl7g9 3,ia37 rd.fmenhown 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 ands dy57,p8mzv 6lnvkkc .-z9f h three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads n6f9vdsk.v5z78z -hckl, pmy 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,yd34gvf 8q(qw a switch and three resistors are connected as shown. With the switch open as shown in the diagram wdq qyv34f8(gthe 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 sh: utc2c 9 qu3hvr1jn(nown to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all 2n:h(r 3qt9vcunucj1 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 rbvj 2 g3- ,zt*nltk4qresistance,3j*-t 4gztkbnvl2rq s $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connectedzx1zv 1c.b)l*(za tbf in a combination series and parallel circuit to a voltagbbc za t).1(1zxl*vzfe 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 r,tato qv:)v753vqgtum xaa4/esistors connected in a combination series and parallel circuit to a voltage5at: vqm vo/a7gx,)v4aq3 t ut 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 1 ek8zb.d b+i:k9il jt z/1mxoh b-c2bl7rij7 of the bulbs are identical. Which bulb will 7lkeb+z81j:ir/oi 9zjt 7bh1 xc-dil 2b.bm kbe 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 ;fr:iq,guvj6c 5+og m ideal ammeter, a switch and three resistors are connected as shown. Withgi6 v;ogcjm+ru:,5fq the switch open 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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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an ide52d-el)z3bdco * v eayal ammeter, a switch and three resistors are connected as shown. With ez bd* cl d)va3yeo2-5the 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 ammekoy*s-+n k,n iter, a switch and three resistors are connected as shown. With-n * sik+n,oky 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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