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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 g.rm.j6ana 6+dzu ge2wz74 tt resistor connected to the batazgu+4tm6 n6re2z d7t..gj wa tery. 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____+o(c )m4 auzlnz nqkpm- g:xq.) j7v-z_____each resistocx.:-qk) -zu)+za z vm7p4(o lnmgnjq r 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 fi l yyv:+xcn.l1lament wire of a lightbulb causes the filament to b:+n1yv.xyc ll ecome white 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 withj4e (he2e4 gyx LEDs. LED is the acronym for which one of the following choice 4xe4jehy(2e gs?

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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 7 ,tb;wuhhr4wz6plq r h (m+i4L and cross-sectional area A. It is to be placed into a circuit, but it first must be cut in half so that the neww,r 6ruw 4hb 4tl7hqm (i+hz;p 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 ofu1kp:: l9mn hn the same material. Wire II has twice the diameter and twice the length of I. If I has resistance unmpn:l9: hk1 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 diamet78 yf l abmlol)c/z7)sndrp.db.a 21ner and half the lengtmy a.dpz7)8 ol/cfrabll72b.)dsn 1nh of wire X. If wire X has a resistance 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 resistor hax)g1rxvae5) ls length L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens )exl)xag51 vrto 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 .y8uws 3v-e z9e.(joptnz+a olight bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more8-jwepo+n oay 3zuzs vt(.e9. 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 material. The length 5*exz ylsta-y: h*gu, and radius of each,5 tazyl-y:*se u *xhg 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, each of resistanu x5txw20f wr/ce 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 in series to a fourth resistotu0x/ f2 xr5wwr.” 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 circuf-u f b343yd,trtr4a hit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. Thydu4r3 4r3 t-f,b athfe 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 righv -o(u u yy-ef8h1e5yet. The three bulbs 1, 2, and 3 - represented as of(e 8yeyuy-1 e-5vhuresistors 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 cira0+,f4nm q my)n dmv;0pcl1omcuit at the right. If the current in all three resistors is equal, which of the fd )co+mvy n,0qmm 4fpn0l;1m aollowing 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 circuit con7z*m 8tinzw0 ) m381 y.hfthregh rs/mposed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or bulbsn38 m./zrw e8 gy1tnf)0hhrz7m i*hts)
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 followir0t9w5i m z+knrdb*(m ng statements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have 9r *(k n0wz5rtdbmmi+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 batq4(g ajwrf q,:tery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel with each other to the same battery,(aj4,wgqr f:q 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 .3- szhvp/ ;k7(t gwnty7n; 3pkcuordthe identified resistor in 5 seconds on(s /. yotw7;k-n;n7cvg3 drkpth3 zupce 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 sim ia6pn)m wsb1 7q+z;ja2w8 ;dzrzi10 ct8pr smple circuit have the same resistance, which 1acs wrpb;n+im stp8;d1 q2 i z)zzw8j07ra6 mwould 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 diagram, the current through the 6.0 Ω .j rs6w99sae rresistor is 1.0 A. What is the pow6.wre9js 9 raser 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 connected iw 7i4 vkblua()n series to a battery. Suppose R1 carries a current of 2.0 A, Rlb4 a7)ukwi(v2 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 :-u dfn h4n03pje b,bxR1, R2 andR3 are connected in parallel to a battery. Suppose R1 h0d,fhjx4u:3np e- bbn as 2V across it, R2 = 4Ω, and 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 maxid wxfdts:*t0asyjc2*+ ha7szyo7 p84 mum vtc ds:xt0z*7sf4h +ajads28 owyy7 * palue 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 lighoqg5o+ri ,kb3tbulb designed to operate at 120 b+gr q k35o,iovolts?

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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 4or3o4fp* ag4 o ohm resistor that is dissipating 36 wato3goarf*o p4 4ts 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 ;pg902goo v3 wkx defj9 oq9(xmarked "120 volt, 600 watt.” In normal use, the current in it i93d(;fp2 9o0owkjo qxve9 ggxs

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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 fs80kd+ k xjazc9s .k:vollowing resistances could NOT be produced by a circuit contaix:.vk 0s89ca+d jskzk ning only three 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. Whichmi fy6fkifj* -v96mf - of the following equivalent resistances CANNOT be produced usi f-ifm9k* m -jf6yv6fing 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 togethe .n*h-n2 0zsg aw b5mi. ovozwi1+gq,fr in different configurations. If all three resn.wgvo2ia,fsn 0 +w- mi.1 *5zoqzgb histors 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 rei7 slfaj+6oq 3sistor 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 cof6a s+ojiql 73nnected 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 txh.-ddy :(lo b48ezgk:oy9xR1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistance 8 :dlk9zbty(xo4. oehxy:dg-s 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 whenhphks 9 -7zv2n operating at 120 volts. What is the minimum amount of time that it would take to warm nskh7-pv z92h 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 r 7xsrh2h*me0eo 2eb55z: ypiw esistor that is dissipating 36 watts of power?weei h5seyb *5hr0:22mpox z7

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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 amperetyo x*3l3z,uxb)t ay;s of current when connected to 120 volts. If the price ofa, z;ttx ou b)3xy3yl* 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 contiwlhc97hin m/a, xn.4ynuously f c, m.9/hh4wanlxn yi7or 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 results in a p1b6u s,spjp x kf;* 9u*njud6qower of 24.0 W associated with the bulb. Which one of th ,j* q *;xukuujf1b6 d6sppsn9e 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 computer rated at 50b52w cbrvif+ t*3om k+0 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 computers covicktmb+ fbw+53 2r*an 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 r(08, 1d-kuubrtz wcrcesistors to form a simple circuit as shown to the rig80rurb,ck(dc- 1u t zwht.
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 con94f7 )p/uw mmtttyck3nected to four resistors to form a simple circuit as shown to the r mk4)w ct7tt/pyfu 9m3ight.
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 throa/*rareyf86q4 y 5 g1kw03hczzh 1 nsee resistors are connected as shown. With the switch open as shown in the diagram the a yc1* 30f6/ 84rqak1ryoz5 wghznheasmmeter 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, mida: *dmiycj.al 4k1(1dfy;v.t8m wan ideal ammeter, a switch and three resistors are connected adflimm(.* jaat8 1mddyy vk4w i.:1c;s 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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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 three resop-l+rm 0hls1-pm .hj istors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2..-ho- lm+lpm hpjsr10 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 equival, b/,czl )rn (,magmceent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all tae /,)m,(cbgnzcrml, hree 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 resisti73fv; mso*fzance of the circuit shown to the right with resiivf smoz3*7 f;stances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 iwz9wt l 3hs8c5dentical resistors connected in a combination series and parallslt 9cwh3zw 85el 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 connected in a combigpbjy(z c ,-ul(w-t9q nation series and parallel cirpt9g (-qlzj b -wy,(cucuit 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 ut7w)l+5xs0 zpz ,uu tdiagram, all of the bulbs are identical. Which bulb will be the brightesuw zuxl50)ztt+u,ps 7t?


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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 rezbs:* pdm7l3a jd r*)isistors are connected as shown. With the switch ojz* *d 3bd7rpa)s:li mpen 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 battum d-m*yzou+pcp) h 78ery, an ideal ammeter, a switch and three resistors are connectehy m) dm+-7cupoz* p8ud as 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 id zi590q *w2p ho,h 0 qushzv;.8deotvbeal ammeter, a switch and three resistors are connected as shown. With the switch open as showne5vdh zo9op28 bihqs;t0 hv0u,*w.zq 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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