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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 elec0k e9:f ydi7qc*c yio;y sls:6tric current exists in the metal resistor connq:fy 7; 9 yiescy 0i6:cls*dkoected 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 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______rs/5ara,:3y 3lbgexlim3 , j f___each resistor 3 bxya sl,ra,rm /3g5ijlf:3e 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 wi8h3xcgc pu 5v )t0l5jhre of a lightbulb causes the filame8u 5clh30 vxc)ghj5ptnt 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 with L()/oks pj mqd/-bjr 1pEDs. LED is the acronym for which one of the following pj( r)1qm-dkop / /sbjchoices?

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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-sectiona* qk b-p6*:.gibmb rkyl area A. It is to be placed into a circuit, bukrg p:mb-**.y6bbq ki t it first must be cut in half 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 made of the same material. Wire II has kiwcv6 44whve;y1 ,qgtwice the diameter and twice the length of I. If I has resistance 4 ;w6ei41vc k yvgw,qhR, 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 sam8md fc( c14sho pm6+one material but has twice the diameter and half the length of wire X. If wire X has a resistance of R then wncsop+dfm 4mo8 (c h16ire 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 rgn7e6 get 6. 44phtq6bu1zfkpesistor has length L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resi76ne4t. 6ek4p gqftbhuz gp16 stance 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 de751vj t mt;.aq i i/gs ikm:sf/3vn.cpcides to modify the filament. How should the filament of a lightbulb be modified in orderga sf/v.5im: .;sip3jnck/t1itqm 7 v 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 sam yz)c/c 3 db/t7n5hnrse material. The length and hc3rt7s d/5)z nc /bnyradius 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 mhln ;5kh .hx*1x2viba 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 resistanck.5l h 1vmhhx ni*;2bxe 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 inonbiyf i(gja2h1k( ur:;qg8, ternal resistance 10.0 kW and the ammeter has 2bn(r ;(ga gi:hf8u,jo kq i1yinternal 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 c zox:8kc:. v,amj)td)* v ;fuhld*jbg pivj-*ircuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in the dd,bvhg-jf ptvv*u *j) *k 8dijax).om:z;:lc iagram
- 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 circuo ,slyqi .4i/oit at the right. If the current in all three resistors4syio io.lq, / 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 simple electric circuit composed*x, ydd5ifhq 84y1q( yop6hl b of 5 identical light bulbs and 2 xlo4 f hb1q *y(,5q6y yiph8ddflashlight 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 qekq*.7mvj5/wjwbd0 pm 9j- j NOT true concerning the simple circuit shown where resistors R1, R2 and Rj7 q v/pw0w* j.5mbkejqm9jd- 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 series to a battery. wayr : 2wqo ()0sho(.nmoxaq*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 best represents whaty:ow0(hxna*2s woo ) rmaq(.q 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 /prwgq *3 ozs7 through the identified resistor in 5 seconds once the circuit was c*7/ posqgzw3 rlosed?


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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 c*-*m) cbk rgx4z bn(kcircuit have the same resistance, w*bk(- mnzcxg4*b ckr)hich 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 6.0 j /thg;myd3o2drn1 tv +1q2e gx.xd7bΩ resistor is 1.0 A. Whxv jg1 13+nto q/m;.2t hyx7ddebdr2 gat 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 ar8kvnm)0y ygq7e connected in series to a battery. Suppos7qk0ny) 8m ygve R1 carries 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 resijsmcy p rfo6pv)./-;xx,.gfm stors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V acrossm 6cgsxvp/x,; jm yp)f. of.r- 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 1pg-u17a ,trzo 20 volts. What is the maximum value 1-prgao u,7 ztof 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 resistadn 175(r5/u2urku mbc:v9l um*rg( f xxtxpb- nce of a 60 watt lightbulb designed to operate at 120 volts?pc (dx*m g72k9unumfxvx:/ ut(5b ul1b5 rr- r

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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 is dissipa*ulkn*)03vhjkuy (mh gvs 2v 9ting 36 watts o* k(02y9u )u3ml*k nghhvvjs vf 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 marked "120 volt, 600 watt.” I 2d,uwd6yuq/gg0x7;ze3k ,qji3p zu wn normal x33j,q7z idzq 2/pgk e0wg6 wuuyud, ;use, the 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 4 1e azzvvz.u+v-cp q/following resistances could NOT be produced by a circuit containing only three identical 6Ω res1zc4 e.-zuv+v qa/pzvistors?

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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 resistor0cp 7vb/u x+qc*id f/ynf,zt.s. Which of the following equivalent resistpf/ /ci*z,c vdu+yq xt7b.f n0ances 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 diffeh6 4hw ou:wd hq0n97xn2bt ob6rent values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be prownxnoo9 6bdt:0h h472 qbw6uhduced?

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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 total power P is(: p *tfjlnf24zy 9s qwdv6bg5 jr(v1d dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connectgdb( 5vj2v 69 jsf41ryf*wzt lnq:p(ded 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 R:k/jk t, bxd- xeo5sd)1 and R2, are connected in parallel, the eq5kxxdj:ds- ,/e to)kb uivalent 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 such that it has a resilb8/1rnq+a6oy ym 3q istance of 12Ω when operating at 120 volts. What is theami 1+nqb yr/ol8y3q6 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 thrfjq/n e +e .utvq4zyi*z:f3 2wa*.l itough a 4 ohm resistor that is dissipating 36 watts of power?n t vu4 3q*i zjeqf2+f*ei .awt:z/y.l

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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 ampered9jp;9w ,a7gi s -by,ei l5begs of current when connected to 120 volts. If the price of electygd;ebgai7 9ibwp 5l ,e-sj 9,ricity 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 1,4 mb:vorg8,ukg:h0-z kg sww 00W lightbulb lit continuously for 1 yem,hswgu g 8ko-04: kv,g bw:zrar 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 reflhja5k wo(+ ;sults in a power of 24.0 W associated with the bulb. Whiwj;o(+k5 flahch 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 +n,uwkp )8c vpa computer rated at 500 watts in a 120 V circuit. If all computers are plugge)+nw u8,c pvkpd 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 resid04ag-c 0 ag h r(ic3c*h9cccbstors to form a simple circuit as shown to thc9 bc*c4 cch0car0gh( ag-3die 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 f*c 6e-ik.gq giorm a simple circuit as shown toqkeg6ci. ig *- 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 smnde onoj pu,*co.jg x l.:k78,*kp5 and three resistors are connected as shown. Wi,* pn:j.. xo7pc5kd,olo *ng jm k8sueth 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 swi,sxvqrk 42(u itch and three resistors are connected as shown. With the switch open as shown in the ,(2uxs4q i rkvdiagram 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 and three resisto e r-gbi3i gf-gw(w;d3rs are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amb;- g 3iw3gdie-wgrf (peres.
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 c,r3n/ /3mtb ts7pv+jlq7a t75gqbiq the right, what is the equivalent resistance? Assume that all wires are ideal, the7t5 grmiv7s37 pt/cbl bjq /a,3tqnq+ 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 circuit sfnhco7xtph/; + x. mv:hown to the right with resistanc: 7v/ htofxcx.hn;m +pes $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connecterrb) .mpqaxx((ruhp -9 bh1/md in a combination series and paralle9h.1x ) /rbx(brq(rpmma-uhpl 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 beyx fz9 4v/8 lb4lpk3qvlow shows five identical resistors connected in a combination series and parallel circuit to axkpvq4 9z4l3l y/8fbv 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 ;2dd aw j48j aoh2pl6bbulbs are identical. Which bulb will be th; 6b8hl22o adp wjja4de 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 amme 1vy6ss )oo0ktter, a switch and three resistors are connected as shown. With the switch opo)6ko10st vsyen 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 andta+gg-b)k av 9l1g*k e three resistors are connected as shown. With the switchgevg-+gk 91k at*)bal 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, axzp21n8ev,lbgx (ryt k. 1ez)n ideal ammeter, a switch and three resistors are conn( xzt2zvynr1eb1pe.,l k8 gx)ected 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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