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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 metvt7d*;h9lum d,tc(ecal resistor connected to the battery. Which one of the fdtd, ultvc* (h 9me7;collowing 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 .5laey.0 u rfmare connected in parallel, the_________each resistor is the lyu.f 5re.0a msame.

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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 wi ej5)r:w7zrcdgi 4 sp*re of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulbjrze si r* )c7pwd:54g 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 with LEDs. LED is the a(ps/wdv s+dgo+a fg/)c t-m e.cronym for which one of th+p)wg to/a(s d. fv-+emcs /dge 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 z;o asr1 ;w bknak*95o8oo+la cross-sectional area A. It is to be placed into a circuit, but it first must be cut in halfl;;sboka o1* azwk8o a9n or+5 so that the new 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 owj8.wf/m wgl-v-9w bmade of the same material. Wire II has twice the diameter and twice the length of I. If I .o8wwg/vb f--lww9 mjhas 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 tw6-m5sa3iy zn nice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a ry m6 nisn3a5z-esistance 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(h ka.y6zx62g,,e6edo e l0l jwmm:pt r. This piece of material is then drawna0(ekh ,l 6pwemoe6 zm26x.,y:lg jdt so that it is a 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 Edison wants to mf*md fc:aq 0))buqv hqk7s s1c:x/ju95myw5 make a brighter light bulb. He decides to modify the filament. How should the filament of a lighw x5mbv:dsy9*h qsu) jqum 0 7qkc5):c/f1fmatbulb 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 cylindr3su(8mnzxl(.ekqax x l/6pz) ical resistors are made of the same material. The length and r xe ms6pkanl )3x/x(.u8zlz (qadius 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 cox0c ,3cdm: d4u9qqcvqhw vz/4nnected 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 resistor.” What 34c: cdqhxvm w qzdvq/4u 9,0cis 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 + lozv,pxfq/x s5)du5 ul+;rt bknv2, diagram has internal resistance 10.0 kW and ksx+z;bqp,v+lul )t n 2,df5xr uov/5 the ammeter has internal resistance 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 bgnyz 0qh4474b f /ubuzulbs 1, 2, and 3 - reprezbu7n/y 4 qbu44fhgz 0sented as resistors 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 circuit am- uh:+3uthz st the right. If the current in all three res 3+tuh-umszh :istors 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 right represents a sihg:+dj ih2q f1mple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or bulbs) if1 2:jqgdhh+
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 s n;9fuv8t tm(jkf* 7gfimple circuit shown where resistors R1, R2 and R3 are have equtnt f7 v;(fug9jf8*kmal 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 secm+fwof.p7p(hp(yn w3 vmbtk8;k :h;9 ltl4uries 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 .hu ;ofmy;438 m9kpvtcp(w(w bpn ft h7l:lk+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 coulomis6/bm :+ fexxbs will pass through the identified resistor in 5 seconds once the circuit was/is6xfeb +m x: 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 circuit have th0-8e kctp)8hqqngo( (e pe l3ye same e y qhtpq83 gc0)-e p((eko8lnresistance, 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 the shofr p1f/kdx ./fiq7ffv0)8 6.0 Ω resistor is 1.0 A. dqvp8k1fh /i fr0f.) ffo7/sxWhat 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 battkt3 0fm jlro9k1mi*zj +j8itm4.v 9gtery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W*9rmg 1k z4jftk39 8tjii0.+ mmjlo tv 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 R1, R2 andR3 are conn4gq5ot:xb cr2b/k3 t1syh1 ei ected in parallel to a battery. Suppose R1 has 2 t13 k 5xceh/1:ib42osqtbrgyV 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. lf8 3 gy,)bmhn What is the maximum value of the cb8y, gfn3 mh)lurrent 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 desi1maj hc,b-:r wika 2gi9)xby*gned to operate at 120 voltsmb2,)c*y ib1wag i-ahjx:k9r?

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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 throughd9w,) n0lgr uc a 4 ohm resistor that is dissipating 36 watts0r9d ,gu )cnlw 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 markekj9k 9 kk;y7wbd. *vbld "120 volt, 600 watt.” In normal use, thkbw;d lk*j79yb v9k.k e 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 be produce:wy vj* vmt j/xg3mm)1d by a circuit containing only thj/mx)mwy *t1j g:3vmv ree 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 tk,ev7qmw l cmbr62*:p hree 1.0 Ω resistors. Which of the following equivalent resistances CANNOT be produced using all three resistkpwb6q ec m v:,7*m2lrors?

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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 connecto2:pu;n i ,q;o ze0pmksws. w/ed together in different configurations. If:w2/simko we,qp0.u; sn;zop 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 *y. a63aqolhm 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 using the *.mayqh3 lo6a 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 R9(ara rwza)-z;qi c4ej4twc6 2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the follo-zc6a;c9 q (4ra)itr4aeww zjwing 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 resista )25d4yssdmjc nce of 12Ω when operating at 120 volts. What 5 mdj2yds) c4sis the minimum amount 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 through a 4 ohm rew+o 1bv3:: u3zos kbb;)jrdkvsistor that is dissipating 36 watts o ;1wbk::o sv 3)ruzd bvkob+3jf 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 connectedx z 6k/sg;x27nnhs( ah to 120 volts. If the price of electricxns/ka7 hg;26xzh s(nity 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 lightbxq1vn 9;sy la+5e+zthbwy;d6 ulb lit continuously for 1 l wzt;n+ae dy+6bqs;5hv9xy1 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 throuziwzri3 3 buo7y*rx)6dhfqel61,)ee gh a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the lightb36x er)rzduz*eio ,le6f1w) 73qiyb hulb?

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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 5f nn,w*ca (ytzsus* kcr7lsh,4o ;4v2 00 watts in a 120 V circuit. If all computers are pluggedyzn4ht27 uk*4nf( l*cs,, ovs;wrcsa 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 to form a s,*j7fx+kgo r cimple circuit ac f*7r g,xk+jos 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 batteshokbo1vam1gor3x3e*mv8 : 9ry is connected to four resistors to form a simple circuit as shown to 9rbh g1vmo:8oo 3xs*av e1 mk3the 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 co.w* clm8cxtk *nnected as shocm* *txl.k8 cwwn. 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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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 ur/3vn 6qnlr/yh ,o/lswitch and three resistors are connected as show nlr3vr u6/ ohqny,l//n. 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 swit7o7 tll1rgsz:,ln,bkch and three resistors are connectts7,llgz:n, k7l 1obr ed as 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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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.14: For the circuit f md1 qq+u,k )vu5uwp+5;yqhz shown to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical rz+up+mw5q; ud5qq,f1kuyv h) esistance 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 circ j+ + 6m4y sdbsm3k0tu5x6jdm) cn2kvpgg)ux.uit shown to the right with resistancepu6x2b+ t. jv0y)s c n+s3gx4mdk5m6jukg m)ds $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connected in a combinkvq0 tc)4l6ca ation series and parallel6a vq)l c4ckt0 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 idenr ch+mahb (43wtical resistors connected in a combination series and parallel circuit to a voltage souh m 3ba(whrc+4rce.
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. Whicht;h4xh2b8 q)un xk d,d bulb will bedtd2;h) 4qxx8 h,k bun 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 9tuh0jkdu18:g48 px i-jna gxswitch and three resistors are connected as shown. With the sw :xujdixg k1uh jpg-n8094 a8titch 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 battery4p(1uz2m y)x/urta pd5 ckp, h, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in t, r p/5xpcku ()42uzyaptm1hdhe 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 and three resist). d)rqh(vb0u wfu8r:pui 5ilors are connected as shown. Withbdpi)u v)h(:w0 fr .iu8 ulqr5 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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