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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 show--z i/prbj*:wnovm a* n, an electric 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 direction of iw mzn- vra:oj b-*/p*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 7be) yckbwt 2*resistors are connected in parallel, the_________each resistor is the s7 eb2k)bwcty*ame.

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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 tc tfc1rv;i03g6 spo)p he thin filament wire of a lightbulb causes the filament to become white hot,1 ip06voprt 3c ;fcg)s 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 LEDs.necry 2moh) / ..k55md59dyl/ hkg3 nba7 edaa LED is the acronym fod)a 35 n9k/e.gelddko/nah am .2ybhym5c7r5r 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 length L v0xz-kr:ezwk1: u ;unand cross-sectional area A. It is to be placed into a circuit, but it first must be cut in half so that :1x:k w 0-uuezrn;zkv 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 o5yuugf 1* yk3jf the same material. Wire II has twice the diameter and twice the length of I. If I has resistance R53k y* ug1uyfj, 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 olof 9 t4ute9fne+,s t,f the same material but has twice the diameter and half the length of wire X. If wire X has a resistance of R then wir l,9t,tn oufes eft4+9e 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 lengtw+ 8 )1neo mea,u9;ysyk;jpmpq6.bioh L and radius r. This piece of material is then drawn so that it is a cylinder with nepj .pyn eq ,uow+b ;ea8m91yms6;oki )w 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 to make a brighter light bulb. He d6cpw u5r -z.j/j itop9ecides to modp6-w .5pizujo9tjcr /ify the filament. 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 made of the same matexw/d-io .so, 5 y oi5 /s8+mndidjsos.rial. The length and radius of each so ,-//8x+oo55s.dinm iodd .swjiysresistor 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 conne45ae/ 3t 9ky7 czw,awbjye/czcted 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 resistt9bwy c,4w/5j/zy3aack7z e eors 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 has internal resist,ywvjo6.a vp +9zi soy31c vu,ance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most nearly: +u,zcs i9.31wy,o jo6p a vvyv


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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 *xiq2ki oe*qo+a+.+ jwshgq 35b2np mcircuit shown to the right. The three bulbs 1, 2, and 3 - represented as xpmkeawqo 5 js2hq+b q .i+2*i3o+*ngresistors 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 electrica 9+5rp y:idho)wrwn *ml circuit at the right. If the current in all three resistors is equal, which of the fop+ rr9w*i dnm y:ho)w5llowing 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 simple electric bi dms9v lm;)5circuit composed of 5 identical light bulbs and 2 flashlight cellvl dbm5)9s mi;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 followin m9a8sdf p+df4g statements is NOT true concerning the simple circuit shown where resistors R1p a9d +sf48dmf, 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 conne pdudiw 7y83d8cted in series to a battery. Bulb X is brighter than bulb Y.id883 dy wp7ud 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 ck;f 4bml2azl c3ykltrjn021 ;oulombs will pass through the identified resistor in 5 f;c ky21;kn4 ll0bla2ztm3 jrseconds once 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 resistors in the following simple circuit hav8:z i h-ft6g22 ltkri;7pjkcte the same resistance, which would dissipfjzi2 t-t h8i kc2gk l6r:;7tpate 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 diagram, thru9v ;o8tak+ he current through the 6.0 Ω resistor is 1vra+8kth; u o9.0 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 R1, R2, and p+hyi xtk c8*v ;sgc.5R3 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 powpv5kyi. 8xc +gc sh;*ter. 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 ae0yhv-m:h za b9b 1zu qg2,hh6ndR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, bb vym, e90 zgzah2:q h-1uhh6and R3 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 120 volts. What is the m5o1 olcf+t1tv3u yl im1lqu4*aximum valuv11 t ctol1qif4 um+3*luoy5le 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 to operate at 120 y30 o9b ,igjp+ dakyr;,gbr0yk 39 doa pi+jy;volts?

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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 thro:zd582ub fme lugh a 4 ohm resistor that is dissipating 36 waz5fl8: 2mebdu tts 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 "120 volt, 600 wanscz;h6s 5 pn6n +jil.tt.” In normal use, tn6l p.+inj6c; ssnz5hhe 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 following resistances could NOT be produced by a cib9ny e bv) xwi2*:x6iwrcuit containing only thr)yii:xe bnbv2*ww9 6xee 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 the following equiva do3z: w1od0ellent resis:odl01 e dwz3otances 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 dihfjgiceg ,,eyk v.7-2emc4h* fferent values can be connected together in different configurations. If ajvh fi 42mee*gcy,7,k.g c h-ell 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 resistor is connected to a battery, a total power P is div47vf eh;vw-m i ljjhe6 h/e,9ssipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected in series using th e/ 7fim-jhevv hjwe9v,6hl4;e 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 resisph8 )n wb-m au0mwd:m0tance R1 and R2, are connected in parallel, the equivalent resbpdn:a 0w mmhm-u 0)8wistance 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 has a resistance of 12Ω when yb gkw+i.9 8y q(ym4npoperating at 120 volts. What is the minimum amount of time that it w .ybk g 94qy(mwiyn+p8ould 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 9hb g02*-pj/vhm uhj pa 4 ohm resistor that is dissipating 36 watts of phghup9-j2h /v 0m*b pjower?

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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 to 120 96q /+ 9mfacwbbw5icmw udx0bse ,h )6volts. If the price/,fdbiw c6xeu b5bsqwacmw h)m60+ 99 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 a 100W lightbulb lit contintem; rkjr1 i+8a,t) xauously f1j,+axreita tr8 m k);or 1 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 rewis7vw a ain9r9uuv +q; .aq83sults in a power of 24.0 W ava 8vu3r s;iwq7qu9 n+i9wa. associated with the bulb. Which 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 /g-kg0akk e5s-e l:8 grfgp y(computer rated at 500 watts in a 120 V ciry5 flrsk g8:ea(-g/ gpe-kg 0kcuit. If all computers 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 resistors to forgm6/oh+ut6m)6 dei-u tm 4xmcm a simple circuit as show46+hx i6- gcte)o umd6 /mumtmn 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 cw*llfdd)7; xnonnected to four resistors to form a simple circuit as shown * d;7dw)llnfxto 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 resistors are conn n b5o9;gh.m:k hhmxz3q5ne 9dected as shown. With the switch open as shown in the diagram the ammeter read5oqmnx bh9:h. 35k 9gdhnm ;zes 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 ami-4q)ja t 6opi(l(cr ymeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 arc4i(t)6a p (jlq-yoimperes.
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 thrhse7b9sg.5x ree resistors are connect9h7x gsr es.5bed 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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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, bfb1fl50w8n, zrch8 iwhat is the equivalent resistance? Assume that all wires are idlcbnzi8hrff0b w5 8,1 eal, 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 equivalentk ou6 0it.t5h0wb fyo9 resistance of the circuit shown to the right with resistanctw0.oi 9b 0hoy65tk ufes $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 fivf,zt fx3hwc+; e identical resistors connected in a combination series and parallel circuit w+3,xzfht ;cfto 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 resisq)kq 7 7hq5wtf(x-ag7 rpcgfi32, l8inkw yk6tors connected in a combination series and para7g qif6l w-knkc 5wr(7ya37xt2kq ) p8,gqhfillel 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 pc+w tt neeix6*)5regc5))yv are identical. Which bulb will beex6 5yc5*)wtenc pr) vgt)+ie 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 battej2wy pk9;utpw5(b/uf m qtl ;2ry, an ideal ammeter, a switch and three resistors are conne (k2/;ptbtw ujywq2l;mufp 95cted as shown. With 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 ideal ammeterc0h5-tysgj qr52 (j mp, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperescqj(py5t g- sr0j 2hm5.
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 resistor*kqjc(6r6 f/ 7sucyyos are connected as shown. With the switch o*/uf7y6cykoc j (rsq6pen 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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