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习题练习:.Resistor.

 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 elec3 uesq70 o7 j xmk5d*or3emji7tric current exists in the metal resistor connecxjsd*0 3ure77jikooqm 5m3 e 7ted 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_________each resxd jt5n*gay8-e( 5x bj:av7xp is (a:gxet8vaj*xx-dp7 y5n bj5tor 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 filamenta5)i;yz s7* 4c1zsu10 qdbh .a xqetbf wire of a lightbulb causes the filament to become white h *z1x;.au 7icsbq1 5t)0dfbqez4syahot, 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 LEDs. LED is the ac:sgvizk- *y.cronym for wkg.- scvyz :i*hich 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-sectionahu l jcj- 3eutr2-,v;nj9nuz, l 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 the new resistivity to jj9, e3h-l2 -zrjn,u n;utuvcthe 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 wiv.vdt.5d s lb1m/8r ;6zmh8f:osphxa re II are made of the same material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II hdx b/p86d.s mo f8h1;.tmv rlav :hs5zas 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 twica2eyu8 s*gih;xj 5ql ;e the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a resist;;uq*xjiy la 8gshe 25ance 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 r. This wsj/tq7fni/3 piece of material is then drawn so that it is a cylinder with if /wqj7t/n3s 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 decide(zm vc, g: ojm5amw8b*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 z*bw(,8 : oj5mcma vmgvoltage?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.07: Three cylindricalmvhj; dg6cbm5l3ti-pfdm 6(q l :5hz 96k t3vb resistors are made of the same material. The length and radius of each recd63g5ip5 ttl z9-vmq(h6 vbd3fbhm:jm6; klsistor 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, ea7 i0- j0ll8ahns/aoew) zcd, ech of resistance R, are connected 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 c,0o0l-zwlcn ese)i da7/ajh8 onnected 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 diagram has int lvaw/g ;g zun:6/zsjnb2-a.rernal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The a/ng:u s/g2-6vzzla a nr.b;jwmmeter 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 ruqex)jf t+d+wz( 7;vqight. The three bulbs 1, 2, and 3 - represv;7wu j+tfqdx(+q )ezented 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 at*bfn uh z)+0tr the right. If the current in all three resistors is equal, which of the following statements must be u nfhbt+zr*)0true?


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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 ng47 5i8nhrg-(,c m/-b t ;lyxbumuse c-ho; ielectric circuit composed of 5 ideigsb7;o5-lu r-ncctb-/ y ;h8(,xn h 4imgu mentical light bulbs and 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 12dt z )u( lx.tfq k tby+nu54jtjlyyd;/s,b .the simple circuit qty5j. ltbdln( fy x)24;kt,j+tsbz /. uuy1dshown where resistors R1, R2 and 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 X andY ;fw h ici0a2gu,5kt*8q4izhc 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 best represents what is obserk5tighzuc4whaq *ci ,i8; 02fved?


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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 identified resisutif/j, 1g3 do1lhtjq2o(g 2mtor in 5 seconds once the circuit was closed? f2h2u1jg,d ti o3/go( jtmq1l


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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 thel3 l+gd e n1ek+u6w5ue same resistance, which would dissipate thdenl5+keg ew+3 ul6 1ue 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 Ω res(t1 es j *421tp9gnr.3iawho;pnh jh kisp.t34( non21hpejj; wah rk9g1it*hs tor is 1.0 A. What 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 xw h j xox(1g4szr4.z09xd .hptx y;22pb4coobattery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω,44 pr.x.hdt(;jxboyx gc9o1zwpzxo204h s x2 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 resistors R1, R2 andR3 are9yxt-;a1z np(6vdgrl 2vz 6vx )jzt/ n connected in parallel to a battery. Suppose R1 has d9yn2lp6x j1t)n zz vx/r6v (gtvaz;-2V 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. +f/rsi 7 oga/9ebtcf;What is the maximum value of the current under these conditc7sigea9b o t/+rf;/fions?

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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 designo4+gedq wc 7 mmd.*c pnbsr3q*w *vb,3ed to operate at 120 vol *cs3 bmobq+*.m4dcgw,d vnpeq 3*w7rts?

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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 thatu*nr5eb6mc rl(/j0)r5x hzqw is dissipating 36 watts of powcr zn6 *urjm qx)5(5hlr/ b0ewer?

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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 clot9q:me n vakhl uh(mh9/xn7cr3hn 5y0+ hes is marked "120 volt, 600 watt.” In normal use, the current in it im(9y5 cr vq39ak h0hnl:n/umh+ hen7 xs

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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 produced by a -,83st2n;8lty tvdtqg z )m lwcircuit contai-v3d;8z)mq ytstlwt n ,g 28tlning only 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 resisto1.ggr 2+vanx(.0jv, qhjkg gtrs. Which of the following equivalent resistances CANN (anq0. gg. gh 2ktjv+1xgjvr,OT 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 different v fku;kd7( f /e/ek v/bi*ctd:salues 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 produceik ;vee(k*d/7t fbd ucfs/: k/d?

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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 Pnu7l/ b( nh7 9t-lqcmn is dissipated in the circuit. How much total power is dissipated in a circuit if n iden7lnmn/9t nlhu7c q -(btical 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 con)hchojyf01( v2p35t q2 ut skunected in parallel, the equivalent resistance of the combi1v5 (qhtpcsfu) o03u2tjy 2hknation 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 resistang1 k8t) efhwbb6rm1:zce 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 f btz)8k:gw6mh1r 1efb rom $15^{\circ}C$ 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 /c1,mer tbc74qb hqd 8through a 4 ohm resistor that is dissipating 36 wattsc41qq hb,8tr7me d/cb 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 cont2o0t- rk5m7azpd t/nnected to 120 volts. If the price of t0t knmar5p/t-2o7 zd 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 q/6 zpc6cus0r keep a 100W lightbulb lit continuouslysu0 zr6cp/ qc6 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 lightbxpk w7w keerxlj- )):,pb li-,ulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the lightbulb ewxxkbp,i )kp--le7rj:, w )l?

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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 a8 nntm v:o.c1rt 500 watts in a 120 V circuit. If all computers are plugged into a single circuit pr r.t1n8 cnm:ovotected 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 ci2/kal/fe4 at ircuit as shown t2k a/lt ie4f/ao 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 batteshr 44gjq-aj9hm ;wmr d5r :-zry is connected to four resistors to form a simple circuit as shown to the :r-hajh-sjgm 4zrm54wd9rq ;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 con4kkdp.uhju4k1 dee6 (h:sj ;gnected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperesj.u4 d(d6 :hj k4eh1peukk;gs.
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 andfxkpq* (mk pfsuo-y lu34-4)g three resistors are connected as shown. With the switch open as shown in the diagram the ammeter readp qfkypul3o- ) s xg4uk(-*4mfs 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 resistornc)qcgl nhxa(*x m0)2 s are connected as showq (nx)nc*lc) a2gx0hmn. 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 shown to the rig,*tcy4 oxsk s6ht, what is the equivalent resistance? Assume that all wires are ideal, theo,ck* 46sty xs 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 shown to the -uy b58, kp5(gyksreqj)i sy-right with resistances yp5esri(k- ,b-y8y u gksjq5) $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 fi 4vvhf )p 29;aqtj32+ ivibycjve identical resistors connected in a combination series and parallel circuit to a voltage sjb tvja9 ;hqc4fi2v+p3v)i 2y ource.
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 shko 4a v8e0ejt/ows five identical resistors connected in a combination series and parallel circuit to a voltage sourte/ vek8a0o j4ce.
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 62k9 x/ypqpqz (zg ph* of the bulbs are identical. Which bulb wilpq 6x/qpkg *9zpz2(yhl 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 three resistors e5gvgpn(7 7pj are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampe7 pg j7v5p(genres.
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 threejd xxdi) qp0f smn;gs (x5dzb -+6:9wk resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2 xzb6dk: -wxfndgm ;)js09qd5(spx+ i.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 ( uf.wk-vjmexxo 0i+2, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter rj+ -wu20fk oexm.v (ixeads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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