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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 resis7 xpyz4 i4-cq ucexzi*ui3z 94tor connected 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 inter 443yxe iuzi79zpczux- qi*4cior 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_______tkzqd . l*15ee__each resistor is thelek 1zet*5qd. 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 filameo 3:a()qczg2mbofwe aem p) 0 l+l9cu,nt wire of a lightbulb causes the filame) u93apc e(cwgq:2bfl+om lzo0 ea )m,nt to become 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 wit(7vwb actm.t*(2xp / ue,egzu h LEDs. LED is the acronym a*t/gepc(e2u (7u ,v.zmbwtxfor 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 l5xsbwclpzo .q9/l- 7isz* *sy scu8,pength 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 l8b 7z*pw,z 9*x-sops5 c u/lsiyc.qs 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 twi4w9,cwx xxcc+ ce the diameter and twice the length of I. If x xw4,cw cx+9cI 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 therg 5 5tw1,wkye same material but has twice the diameter and half the length of wire X. If wire X has tw r g1ke5w5y,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 has length L and radius r. This piece of materic7s)ayn65 o2 fs0j orral is then drawn so that it is a)aj 26 srf7oor0s yc5n cylinder with new 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 Edismq0 n2b,lm pdgznd6-8on wants to make a brighter light bulb. He decides to modify the f 26q8nd0dzm nmgp, lb-ilament. 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 mate h)b zayc--z4rqoo8 ,f(ntxi4rial. The length and radius of eycfax 4(trho,-bqz4 n8)oi- zach 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 resistance R, are connected to v (j zoqd.m3dtyh;2t(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 tom 2d3d.vtjz(h( tyo;q 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 accomf de z/o 10ts51a03cp2vvdrrcpanying circuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The volt ve0350 dstr/co zv12rfpdc1a meter 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 com*09llfv qn1kyn:3t5 a,potcypound circuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in tyf*v 5oll c:ynt93ka,qtp10n he 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 circuit+(jin 5kq lkz5o*jpth bz46.a at the right. If the current in all three resistors is equal, kzq+zph .4k6inao *jl 5( jb5twhich 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 represents a simpldvs n d9qpz420e electric circuit composed of 5 identical light bulbs and 2 flashl0 dd4qnpz92s vight 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 sta9r)pq4 g.yk8a v*lpodtements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have equal resistances?v)a p gl9kry4*q.8d po


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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. .hekb)2,- w4jkox2bv8x jshv+fj (p wBulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel with eac2ks8hvpwho 2x,jx b-kb fj ve+(w.) 4jh 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 5 7tt6xdp;x,jwkq1ms8 -m ha w through the identified resistor in 5 seconds once the cxmm s khtt8;adx-w,71 j pwq56ircuit 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 follo a9g79loq 8lz uzq8c1gwing simple circuit have the same resistance, which would di8aq8l uo1gzl q99cg7zssipate 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 accompanyi pt9;iws;s wo *mzva ,h8lbp43ng circuit diagram, the current through the 6.0 Ω resistor is 1.0 A. What* l i8mwo;4tsbpsw3v9,; zha p 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 R3 are connev t-vqlxu*y(6 cted 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. Whatx qv6ltuyv*( - 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 ap;.*gyraoj*6 eq,l h wndR3 are connected in parallel to a battery. Suppose R ,ahq lor*wgjey; *.p61 has 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 vq +qy6hi,wfy:g/;g lrated 1200 watts and 120 volts. What is the maximum value of the : lg;wh, 6y/gv+ fyqiqcurrent 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 de8(wp7um . d3bw23tf 1 umxtobgsigned to operate at 120 volwtpx1b8 2f.7( tgu3 3 ubomwdmts?

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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 iz5(0h0j bvbvvao d8jn 0:m wh)0qcw0a 4 ohm resistor that is dissipating 36 watts of powehwv0z)j mn hovbd00q(0j0b iav8c5 :wr?

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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 cloeg :bx zq g04oew76kz-thes is marked "120 volt, 600 watt.” In normal use, the current i o-xk40eqez7 gwz6:bgn 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 l2 (n vz2qs+kl7zeqze 95s.xr produced by a circuit containing only three idee 5s+zv2neqlzrlk9 szq 2(7.xntical 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 q j+wqp0s;d- rsh)u8aresistors. Which of the following equivalent resistances CANNOT be produced using all three resistors?uqdqs ;)j-+r wp8ash0

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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 va8b4tny+lxmz1:bv(wmtd w2htn :t 0 t 5lues can be connected together in different configur nntlv+::w 8x1zw tt50bmtbhd t(4 2myations. 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 resistor is connected to a battery, a r;8zos uxe)j:4ygp;qtotal 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 sa8 qx4sjry o;gpz;eu): me 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 connected in paral9q 9fwbz 5ltovr1k9u:lel,ztb qforv:k1 9959ulw the 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 such8py 1-56q. ej*z.bqp j6vu25 c vgcq5b lsygoh that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amoubu.pg j-ze1v6528.qh cylq5 s6ogjp b*5y qc vnt 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 currs1cjpeg1 2 ut5ent flows through a 4 ohm resistor that is dissipating 36 watts112pcg5suj t e of 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 he m3 gx:w5on6gkater draws 13 amperes of current when connected to 120 volts. If the price of electricity ggk w3 mn6ox5: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 lightbp -j.yk4ny8enea)xm9 ulb lit continuoaen y kp4.ne8 )jm9-xyusly for 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 d4eau no8seotx*m,bf1(0;y a of 4.00 A through a lightbulb results in a power of 24.0 W associa1 ,; 8(nxfsmuaebaoo 0t4 dey*ted 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 4tzcf.sb9b 8z a family of six owns a computer rated at 500 watts in a 120 V circuit. If all computerssbc94 b .ftzz8 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 t,5z neu l(8v tw+//ydeh- gkrto form a simple circuit t hln ,t-ewerygz/(u+d 85/v kas shown 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 cm(wh82nsa s yt b3i3+honnected to four resistors to form a simple circuit as s3 sb2ti8myh swna(h+3hown 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 resistors are cong:ybt/vfk;z/(i:qo t(8 yhipnected as shown. With the switch open as shown in the diagram the ammet g8otyib:/p((h/:k vt zf i;qyer 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, ac 9p.x d-dg0dc pcm6:cn ideal ammeter, a switch and three resistors are connectepc90p mcd: .gcdx 6-dcd 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, an ideal 5wq,6p)vbnjbmp r r7 7ammeter, a switch and three resistors are connected as shown. With the switch open as shown in 67prn brm, qbwjv)p 75the 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 equivalent resistance? tvli i9irv,lxakb *zh:,( 62x Assume that all wires are ideal, the battery has no internal resistance, and all 2zvlri:h tix,6,lx9vk* iba(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 equivalenekoil lc+;m0y qda3. p./j 06jnj pqe1t resistance of the circuit shown to the right with resistanc qq.on 0kdl/.c i0aj1j3 m6+ lejpeyp;es $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identvonkfm6bkn-/ps ju8 ux,x )2m;n : tm:ical resistors connected in a combination series and pavmu6psn :xjfmntnx2k8: o)bu;mk/- , rallel 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 belori;kajo 5l)9qp u:6yjw shows five identical resistors connected in a combination u:qro) jl jky69ip;5a 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 identlwx u9mj ,+1imical. Which bulb will be tx, ilw9m +j1umhe 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 threr cfty- e1qbp9l2x 258uft au+e resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampere tx-fer2 u2 f qt5b8y1uc+la9ps.
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 q vf:-mie9svc fy ;/l(and three resistors are connected as shown. With the switch open as shown in the diagram the amme(vf:-q9v/; c m seilyfter 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 resistors are conx k-;e; ;m iw1d7ldarfnected aadilx; -; wm; ed7krf1s 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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