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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 currenpdn,: o (r+lgit exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the ogd,rnip( l+: 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 resi(:fopb,* 7o;htjlcxd n:i4dvstors are connected in parallel, the_________each resistor is the sa:(n:ddi b;jocx4pvf tl7oh*, me.

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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 qw/2 b./bzsnxwire of a lightbulb causes the filament to become white hot, while the larger wires connected to the ligh sx /2.b/bqnwztbulb 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 householdjj :lo0u:dh+w(19*zjw8 r3korgub sz lights are being replaced with LEDs. LED is the acronym for which one of the following cho0bj+hzku: j9drw:(ws 8 zglou 3*jr1 oices?

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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 .svk 7m5+;xj cmyy4ek length 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 les mvj;.m+ k4x75 ykycength 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 of the same material. Wire II 9ou5v;ltrv74q9vsbuq v 0w9lhas twice the diameter and twice thqv vtuq9v4sw5l b uv7 9rl;90oe 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 diameter andb-xqq-+ lk(wg half the length of wire X. If wire X has a resistancq+ -(-lbkwg qxe 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 :m,v 7swz pusnu7:r,xew+,jf and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of this process+v 7p7rj su:zun:ws,f ,m e,wx?

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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 Edi.h-sj njl:n4g, c tt-json wants to make a brighter light 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 give:jlc 4n-stg.n -htjj,n 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 resistor*js54d my+xcep8n/kwd/a6 r cs are made of the same material. The length and radius of ew *rjcky/ daedp6x+ 4 n/m5s8cach 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 a5qefws2 le s4fz8+tn : 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 resistor.” What is the equivalent resistancewt5z:fq+2e s 8l f4sen 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/ h3p xmf td)yt*e*7cu internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading f/t) e**c3mxpu7ty dhis 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 bul; f- f7peb;y3qn2lxoabs 1, 2, and 3 - represented as resistors in th3-po27nqf fe; b xy;ale 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 at the right. If the current rcqo(i fg/wuersm:pt44; : ly6 qor 0+in all three resistors is equal, which of the following statements must brrp0(sl/rq q :o46g+4 ofw ui:yte;m ce 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 represen5a(nrjwv1h++ y3iykpts a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which buwa5r+yi n1j+h( vk py3lb (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 thex:8 +j /fjvqjy simple circuit shown where resistors R1, R2 and R3 are have equ: /jfyx j+jv8qal 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 anv 6fqoftl8 etr3 bamuf** *x-1dY are connected in series to a battery. 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, which one of the following choices *t l-ffob a3*1t*vm qf6reux8best 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 n27tsn:yedm(v 9av.d through the identified resistor in 5 seconds once thda tvysd2n m7n9e.( v:e 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 ez l5-kdu q9*md76qwasimple circuit have the samaw d q67 km*9lzdq-5uee 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 circqx, y j )m5p9pans5,m(ra 4bopuit diagram, the current through the 6.0 Ω resistor is 1.0 A. W9a,pj,5x4qm ony5p( rp am)bshat 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 connected in series to a batteryhrdjd+y78uh q3: vx4n. Suppose R1 carries a current of 2.0 A, R2 has a resi7 x8+j3:nudy r hqdvh4stance 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 resiscbdcga (;gp 0;* 3blsj knft;/tors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates/bg3t* ;c; d ncs(;ajpfb g0lk 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 t2*7yhkr wlf3. What is the maximum value of the cu 7f l*t2kryh3wrrent 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 resistane.u8 l f:u/t4khuj 2ozg y.fm0ce of a 60 watt lightbulb designed to operate at 120 volts4jtyuoul2m0fze /h ug.8kf :.?

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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 po;c5wecr+i(g + nbrxy1.fv ;,eot8g is dissipating 36 wattsr5yx;+fvoe1 otgr8+, b. ew(i cpncg; 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 iron2c+oyixz.- s;hf ,e ml used to press clothes is marked "120 volt, 600 watt.” In normal use, the cuec+;lhx i- yo .fs,2zmrrent 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 c.dw1e f5ck4mx 5w1xjjould NOT be produced by a circuit containing only three identicw x5 e4fk1mj wjcx51.dal 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 th*5no z -3xntxiyn3zeem49f6* sf- ca k z9gvg+e following equivalent resistancesee nm ffk 5x-czz-son3g xiz93 a6t4+ygn9v** 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 diffe qa3.2+r cuwo 75:fgyik;achfz9 qa9jrent values can be connected together in different configurations. If all three resistors are 57afjq39 :+ka.ochcz quai wgy2 r;f9used 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 /w l sf,bs9c 1puts29za battery, a total power P is dissipatedfsw,u9bpz/9ct s ls 21 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 connected in paralle g2vi qc.ip;4;k1qchx l, the equivalent resistance of the combinatiokqh;;.icci1 x v2q4pgn 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 av+ .ot+hk,tp)pnx.oy t0 q )bit has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg of water fromhnpaytt.,o)) .vk xq+ b0op+t $15^{\circ}C$ 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 thud/aixoa0bskxhpf w +g8;7p.5 61gh crough a 4 ohm resistor that is dissipating 36 watts of p6h8 0s opxu.g1p;hf+7bk a5/axgwcdiower?

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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 draw4 -mgtbui0+hezb 4y cis.hjg27*x:xms 13 amperes of current when connected to 120 volts. If the prixgiecbyh2sm-jg7*4 b4.:z+0hmxi ut ce 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 d(w e8yq2 3wahkeep a 100W lightbulb lit continuouslae(38 dqyww 2hy 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 of 4.00 A through a lightbulz-; x evwkdkpwox 2i/ar94(.y b results in a power of 24.0 W associated wi.wzywie2 pxx;d/9 vra4kk-o (th 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 computer lhd2-zo oh9 3f 2svo,6xlezf 8rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse,8 zlo2h fv,ds3o9l6hxof-ez2 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 fv(on 7wl+xjeud 1-zk9 orm a simple circuit 91j(z7 - dln euowvk+xas 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 connected to m2t pxo+ t8t i*fm7br-n yw:-ufour resistors to form a simple circuit ify 8w uxtn-tp+*rt:bm -27omas 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 and th ilyc.6et/b s .wh51orree resistors are connected as shown. With the switch open as shown in the diagram the amm.ysw/. l5crb1 ih e6oteter 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 batter;smq( k*z3 bfoy, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammetsboz;(3km f* qer 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 resi ka(38ny.)7bu ad k4rc6 apeg6mbmm ,rstors are connected as shown. With the switch opaa7cmbyr66 g m)(makbu48. kd,r3pn een 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 sq 5byt m1;vrx0c/2t wkubu6 7qhown to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no ix6 uk5u cqtt7vq2 0y 1wbbmr/;nternal 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 equivalent resistance of the circuit shown to the g9efke;c 5zsg alktg4c*s j2c.9n (j1 right with resistances 2sktk fc49.*9glz;ejg (jcena15cgs$R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 conni/ dmyk0zk/. pc3v/bfi69ge fected in a combination series and parallel czk i6c 0/fy /fedk ig/bpv.9m3ircuit 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 bex:s( 7pq) nyw+tq7bsxlow shows five identical resistors connected in a combination series and parallel circuit to a vol7):(ytqx sb+ wxqnp7s tage 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 identical.9ue;v1o xnaj4 Which bulb wi;a 9ove4n jux1ll be 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 ammeter, a switch and threpfta )hj1d9xc 3g6nv,e resistors are connected as shown. With 93n g)f av,6xdthj c1pthe 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 ammeter, a switch and three rdbxww.2l 6 )9zbefl1u.tk( yl cr e8t3esistors are connected as shown. Witeb)dl.z.w31l ukbt 869 elxyw(fr2 tch 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 ideal ammeter, a switch and2zm k,j-(fitvpjos ,: three resistors are connected as shown. With the switch open as shoj,t :-zo(v s,if mkpj2wn 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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