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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 shoxj9n/r 3 sk .9avc(fenwn, an electric current exists in the metal resistor connected to the battery. Whichc 3r9ejnv xfa( /nk9.s 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 resis 9uls0l q+cejr-xv /k(tors are connected in parallel, the_________each resislq sl0-+uce(9/ vkrxj tor 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 the filamaoms5 j:dw kqv2muurr 2- /ct(s 7)u9eent us(5caj2mw- vuqu 7rs9ke/ t)m:dor 2to 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 reps07fl0aok0n pn arv 08laced with LEDs. LED is the acronym for which one of the following 0pavkans00 o r0f7 n8lchoices?

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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 res d3*3fchs/v; hofw0meistor has 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 length is 1/2 L. What is the ratio of hswo;f3 * fc3vdh0me/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.hn, j,f5g6*fsy igb1,4 utn du Wire II has twice the diameter and twisfh* ji1gg fb, tu5u6,y,nd 4nce 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 thyz f676mjf2 w khde3(r27u ow(vnic h2e diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a r(jzhy3n vo(7kfim6 26uwcrf dwh272 eesistance 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 radiu+p u1gb j+ x*z-b9xpdwzm)k,ys r. This piece of material is then drawn so that it is a cyli,+pj*zxuz- w9g m1 ybb+) pdkxnder 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 Edison wants to make a brighter light bulb. He decidemr8wfail97(n a )e kr)s 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 vol ri l7)kf8ewran) (ma9tage?


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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.;/tgdtjt06u9m, wht v The length and radius6t,0 dhwtgjv / mu;tt9 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 resistorsp:txf j 4e9adjh 0f:fg7gw+n1, each of resistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors7f wp+:nd4fjgaf tx0e:h gj 19 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 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 diagramvj(* hhn.4jm6fl8nc7ed y /kc has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading 8 fc(e6nc*4/7nv khjl.mjyh dis 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 ci).rf *krozp . 4z+nxxkrcuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in thefox.)r .xp + zkzrn*k4 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 atc wd ztk;kn 2rhvr:); h*p:lex(u-ev( the right. If the current in all three resistors is equal, which of the following statements m;(hzp k2vlx* (n: ukceewht :v)-d;rrust 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 represenu 2w6k,gtiu 2its a simple electric circuit composed of 5 identical light bulbs and 26, gukui2wit 2 flashlight 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 concerning the simple ciej ;,ky8,gptnab ;oyn (xz +xk8kg.j4rcuit shown where resistors R1, R2 and+48zbo, tg;ykgjj ekyxpx ka8 n,;.(n 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 Xc*s9rzs-ph 2m y7q 6:t ye.gqc andY are connected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulb9hrc2q.7zcms y6 qs-:gp et*ys 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 the identifiew1pt dw7*6ocr d resistor in 5 sd17pw *wo6rcteconds 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 t5oog4vlt4j,/fxq/t r ,dwxp,+ l t q3following simple circuit have the sam,lj,l twp+qfgtt,4 3or/4xq t5ovd /xe 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 circuit diagram, the current through thht)n0 wl2/5 y /ckurkoe 6.0 Ω resistor is 1.0 A. What is the t/0 cwk/52lykh n u)orpower 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, ao;cqp;f 5ob cthmm/6r 4 td3b;nd R3 are connected in series to a battery. Suppose R1 carri ;;pf/b bto3rocdcth; 45mq6m es a 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 resists37fo4iom /w nors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2Vow7 omi3f /4ns 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 macdi4ndbe.-uq/b7nx /h vc 9yd2- x *ptximum value of the currey-tn-4db*du in c7bp2exd/. vx/h qc9 nt 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 .dq+jxia9i(wf2 s(uywatt lightbulb designed to operate at 120 volts(w jq axiisy2u(+9d .f?

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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 thal:2f6t zew 0szt is dissipating 36 watts of pow f20:szwezt6 ler?

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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 clothm0y7nz(icxpeo8xopgie 2-:rvx829bes is marked "120 volt, 600 watt.” In normal use, x ix-y2eve:zp7 (rm9con82 x ogp0b8ithe 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 jf07w1z -vg d -gyc8gmtgsym1l;4 u1obe produced by a circuit containing onlyfz1ydymc-sg1m 71g u to-;08 vgg wlj4 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 resisgj(0 g7d ugbpd c,4um0tors. Which of the following equivalent resistances CANNOT be prod74cgm uugbp ( ddg00,juced 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 different values can0: rlf0taxo 92 fc9xl pmtys*51ccg2u be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produy lc1 t0t59rfo9* fgx02puc:samlxc2 ced?

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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 connecc5n 1qmuj m)fydm lap-s/5x-0ted 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 connected in series um msxu51 q m-d/n)yf-c0lj5apsing 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 resista,qjs zv0j0o;)ssh *nh nce R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements a vojsjh* ,0 h)qns;0szbout 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 o1: hk8ugrh9o r:lsgauw b7e7v) s )+muf 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to wge 7husmv8hs9o7ubr)ur+g:) :l k1 wa arm 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 .in2e p6jdw*-ozq/oid 2d0,0u ik cfk resistor that is dissipating 36 watts pddo-0de,j/cqo. i0 ku2n6z*fwi 2i kof 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 to 120 v6 x/kv9nof qg9olts. If okqfg9n x69 v/the price 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 100Ws*;jo zs/yob8 lightbulb lit continuously for 1 year y os*/s;ozb8j 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 rh7l2p 5ja1impn wc1ts.67ussan,l/ mesults in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the lightm61a .cptwsl7 / l 1ju5 mp2ns,as7hnibulb?

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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 comp5stkq l- jg0c s*yk(4bj;mhv *uter rated at 500 watts in a 120 V circuit. If all computers are plugged into a-*4b(s s c 50jk;tlvjkgmqy *h 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 form a simple imqnr 9v+ rjk+51a vko6et5 /icircuit ak 5oeqk5n6 +jv9ia/1rr m+tiv s 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 battery1iq7 wse*:gxdkm8itjn 8 /ph8 is connected to four resistors to form a simple circuit a87gmjqxiei1 * kw ps:td8/8nhs 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 an9cw6c 4djd0pw/wd -jc:pdt+od three resistors are connected as shown. With the switch open as shown in the diagram tc9: 40 dtp-/cwpwjdocjdw 6 d+he 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 ideay o3v k w5b*yzd8dob4j-s (ny5l ammeter, a switch and three resistors are connected 85(jbdok-w oy54 3d zbvnys*y 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 ammeter, a switch anx k rmbor1c5*nh)4+lvd three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 avl)+1xorn* kc h br5m4mperes.
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, +hfwdsg/lj9 ( what is the equivalent resistance? Assume thgf/( s dwj9+hlat all wires are ideal, 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 equivalent resistance of the cirowdi);88h6rgvb+i - a a*vm edcuit shown to the right with resdd*a)vbgm88 e;h- ai6wvroi+ istances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 showsouvk.5;lhx o5 five identical resistors connected in a combination series.;lo5ouvh5k x and parallel 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 identic; s3xduu9hp f5al resistors connected in a combination series and parallel circuit to a vol ;3f9puxsd hu5tage 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 idelm pa;,b6 nej+(zz;llntical. Which bulb will be the brightes+;(ll en azplbjzm;, 6t?


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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 resistorsx7,j- 0a/u1 p xxf,zpl0xrgi jjyp/hdply-5) are connected uxylx5 //hjpdpx1f r00p-l,igz7jy-j )xp a,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 ammeter, as, a jg(up4j p()6oq2 lktzy+b switch and three resistors are connected as shown. With the switch open as shown in the diag+ypju(2s alo qzj4 (b t,6pk)gram 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 battj/tpcrf+6 0uk.f uv-uery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the amfuucrt+ v-f.k /0pu6jmeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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