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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 g:2 hyzs un3x oel+n32shown, an electric current exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron f23 o23 :gneulnszhyx +low 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_dk+)q ivv 1e-8ylumb6 ________each resistlyu6mv-bv 81 )i de+kqor 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 filament wire of a lightbulb causes d c)latn *3w;kthe filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens becald)3 k ;*tnawcuse

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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. L2,g u ,+ hbeyuy1ax/deED is the acronym fodax,/eygy1 ebhu+ u 2,r 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 and cross-sectional am57c7*g-e hlfp vn2cp rea 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. Wgcpl h-m 775pe cf2*vnhat 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. W,7(th: mceb,xm w3yank+8e pqire II has twice the diamet7 knh myt3m (eebq+ :pxc8w,,aer and twice the length of I. If 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 the same material but has twice the diameteryl z 4paoxn*;xybyy.puq r*;6/m3 .c m and half the length of wire X. If wire X has a resistance of R then wire Y wuy ;z3*/*rlyo4pq . bn pcxax6my.my;ould 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 has2s-k zj/2qr)(gb ot )lhauw,5/yx ign length L and radius r. This piece of material is then drawn so that it is a cylinder with ne-s/wu)2 qx i)yon25,/z bh(ta lkgjgrw 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 ljan uc/ld7f s.4y,:ig,vu ;bf (zh ew,ight bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more light at a given voltag/y,,l fcgun4fbdji u(w;:azs7e,v h.e?


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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 tj1sdk t/v;7o ahe same material. The length andj/v;7stk 1doa 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, each of resistance R, are connected to a batt(odwpm8r4ake05 j /r r(rif:-qkzd a8 ery 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 mr a5kqrrio-z/jp0w de d 8:8krf(a( 4series 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 j rp/tht*,)y;) v 8iuoxay*tiresistance 10.0 kW and the ammeter has internal resistancr8yyt;jt) ah*t i,v*x /)ui poe 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 right. The three bulbzvrk((w. *:lng1hb c rs 1, 2, and 3 - represented as resistors in the diarc*nv( blz(h.gk1 wr :gram
- 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 simpl) rb-tv-sz6br/y m 28)gxi exle electrical circuit at the right. If the current in all three resistbxm8r-ilb- vtzs/)y)2ge6rx ors 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 ripu0 75vavfkpx/sh t* 0 3u2dkjght represents a simple electric circuit composed of 5 identical light bulbs and 2 f3 av2 jxpkfp/sdh*0 kv75uut0lashlight 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 czv;1 s.lx2mhtjl 6fp9 oncerning the simple circuit shown where resistors R1, R2 and Rltx 1v9mhj 26plfz;s .3 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 seriesk 3ea1z5etqj s*wufcd /,+n,e to a battery. Bulb X is brighter than bulb Y. Assume all circuit elemn*,e1 5uwz 3kdjstqa+c,e/e fents 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 trg8/r1y 7dzsvs*, ety(r eyg6he identified resistor in 5 seconds once the circui/r6gt1d yee(y, srzgv 7r*s8 yt 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:jwhphgo 5 //-x bqeh;a uegpz2d.- 3w circuit have the same resistance, which would dissipate the oa2 3uzg xheg5d p/q-pbhw:.ejh - ;/wgreatest 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 Ωt;u 06jzkkykjp9bz)s :w- )xhgkj94vko 7 l5b resistor is 1.0 A. Wjb x9k:5 9z0; spjzlt)-w6ov)yb 74gkhk ujkkhat 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 connect*vm4j 7c*l r gclqk+m)ed in series to a battery. Suppose R1 carries ag * c lmvjl*qmk+r4)7c current of 2.0 A, R2 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 resistw 4(kze: phlei.2 i7ekors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the current in R3.ek (i2w4ek:ehlp iz7?

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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 io69kg wq6p8pox l1, yvs the maximum val,ov61wk9p p olqg8xy6ue 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 opefe3 rg(n7: v,zhddr8q *h c)ferate at 120 volev,nr 8*h )h zd3frfe7gqc :(dts?

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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 oh +6sy)1uyy/fa2hw jg u( js9odm resistor that is dissipating 36 watts of power jo1h y a2fdysw/g+y69ju)(us?

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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 us 2k2b3edk br)yed to press clothes is marked "120 volt, 600 watt.” In normal use, the current in itkb 3de )2b2kry 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 resis- r jux3xmby*sel1 q.5tances could NOT be produced by a circuit containing only b1-slye3mux.qx*jr 5three 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 tte k,t2oogvu w x8)/+che following equivalent resistances CANNOT be produced using all thre) oog 2et v+8k/wxu,cte 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 connect;eg/qd7ppkq dds xtjt4s +th+,wb /9-ed together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produp bp+s d qht/dwtgt / 9xq-;k+es,47djced?

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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 resistorhw u q,:zsrowj2p4d8nb +) 3sp 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 ar oqu w83sds2pjznb ,hr+4w p):e 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 connecsf)d2p:3enlh ucd2a)as9w8 x6bm6dv ted in parallel, the equivalent resistance of the combination ishvanbwu):ms6) ad893 pcl2dd2 efx 6s 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 6tkd v9qk webgo3lb;xnx 7jh +a, v,ub;ze43- when operating at 120 volts. What is the minimum amount 7jxtoeh3e dvkb+x vl,-g6k ,9b w;3 na4qbzu;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 through51zq1r :vfmfv a 4 ohm resistor that is dissipating 36 watts :qf5m1vr1f zv 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 heater draws 13 amperes of current when connected t wz1a.a j0w(e1jffl. xo 120 volts. If the price of electricizax w0fl1e .a.w 1fjj(ty 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 muczr ,. *;gbbghde6f d;o6agr9g 6r tuf+h would it cost to keep a 100W lightbulb lit continuously for 1 year at a rate .udg6dg a;,b*9rf+bzg; fr eg to6hr 6of $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 4.00fczsw/yy(kwopmt r63h78 2w4 A through a lightbulb results in a power of 24.0 W associatey3 ct2pzk 6/m w7s8wwr4oyf(hd 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 compu:w cw0jrfszy05m ,6a0z)iu/gk)uu zd ter rated at 500 watts in a 120 V circuit. If all computers 6)k, w5gz /rsiuu0 )yua dw:zcf0jzm0are 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 :3.mlmlsxh 1e u. qj7ga. s-icconnected to four resistors to form a simple circuit as shown tam7. 1l:h 3cl e .m.qi-jxssguo 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 connected to four resistors to form a simple cir-gmqhpi /z)vgtp1 0 .wcuit as showg/0vt1 qw)-.gp zmph in 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 conw:z/ ;1g blqeg)rcs1 nj5*/lqk4fdwt nected as shown. With the switch open as shown in the diagram tkqdwc/* )w:gjllrf/n4s qg1z e 1b;5the 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 and threh:(uxe. 2u tl29uzjrpy) fk:t 3m1xzhe resistors are connected as shown. With the switch open as shown in the diagram the ammeter read p )j1h.z: 2u:lkmhu 2x3y xtftzue9r(s 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 resistotp,g 1.w e3itdrs are connected as shown. With the switch open as shown in the diagram the ammeter 13dpg.i wt te,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 equiouo9fl9nv k /j n7,dx6oh y/n -bjh40gvalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resistance o,9v ujno09/6fk boj-hn xy47nhl/ gdR.


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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 thek+o.0gknekb; t 6 d-s0kj4cj g-sxly( circuit shown to the right with resistances+-0 s xlbed06 jk.(4o;ny-tckk kgjgs $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 resi7t6iq i0uaewk(zlpy:8 s0 ,i wstors connected in a combination series and parallel circuit to a voltage sol0s7zikp6 eq,i:0uw8a i w(tyurce.
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 idtg-74ii :fpmventical resistors connected in a combination seriesp74ivgfmt : i- 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 circuitf 76u9teo0r x-cov6 uh diagram, all of the bulbs are identical. Which bulb will xrc9 0t7f- 6vohuo ue6be 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 ideal a 64vfa nnzi64 js7: auf/qjie)mmeter, a switch and three resistors are connected as shown. With the switcn va4)6 jqjin/4f:6s e f7zauih 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 ammeter, a switch and three resisto4sjypdpqf*6r ;r g2 v c,;8naurs are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampe p r ;cajnupv2rsg*;f684yd q,res.
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 swu5sgg t 0:i 7mr1ye;skitch and three resistors are connected as shown. With the swityu7 g5 1sst:;rmgk i0ech 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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