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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 electric current exists in the metal resistodmgfe+em+25:ig(qv 4m- v grh r connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the direction o(h5m+4 vi e+qgm dgv m-g:f2ref 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 repbexqj w57p50sisxp7 jqp wb50e5tor 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 ofs9it; q7gc(l8v :hqk i a lightbulb causes the filamen; qt8hcvi(k9s :lig7 qt 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 bei pc/* l aj4av40omhk,bng replaced with LEDs. LED is the ac a4kj0c 4/o,bmaphv *lronym for which 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 grrhf,5sz *8 mguaphite resistor 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 the new resistivity to the old resistivimuh* sg5z8,frty 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 hy(i.n*l9gx 6yts d( amaterial. Wire II has twice the dis.gahxt y( (l9* yni6dameter and twice 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 9xoc+:defd150hy jv m of the same material but has twice the diameter and half thed0vye 1dof:x h59 mjc+ length of wire X. If wire X has a resistance 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 and radius r. This piece- s ,fck sbiwkeko,340sqqn-, of material is then drawn so that it is a cylinder with new length 2L. What happens to the ib3,4skk-es, k0 qn-cwo, fsq 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 bzj)z sl /nvp*,. (kawu/4nr l bq:rjs5ulb. He decides to modify the filament.5npq.j* al/( zrnr/) ws4u:l ,jvkzbs How should the filament of a lightbulb 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 cylindrical resistors are made of the same material. Thej4/pc.t kd 7.r+jz yuu length and radius of each resist7+.jz d 4cujru./pykt or 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, amkm k1j av0xd)3ck5w3)m e )tare 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 connected in series to a fourth resistor.” What is thektm akk m5dew)acj3 0x 1)3)vm 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 diagrag cc8heci bzn51j;- 2im has internal resistance 10.0 kW and thicc1bijh-g;82 5n ez ce 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 b3sptwhy1c)efs2r,( ug 0o*fcompound circuit shown to the right. The three bulbs 1, 2, and 3 - repres 2hp0 s osr)13y(tbf*,wug cfeented 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 elecozj/1qz+ n0y.ffru g() fr; bxtrical circuit at the right. If the current in all three resistors is equal, which zy;b0z)1gfo(n rjfr+ .ufx /qof 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 8 9iy52-+ byo8r0ufowoa wepu simple electric circuit composed of 5 identw 8 opoy9ua-o eifb280uy+r5wical 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 the simple cir9kk.cjsnxq); degcrl);buw t0 a:5r 9cuit shown where resistors R1, R2 and R3 are have equal resistn a:c.;kkxdswg r)b9ru 09q5e)l;j t cances?


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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 inihjy/mo5 t1+tf97 uk v series to a battery. Bulb X is brighter than bulb Yhoj7v/umi5 t1yft + 9k. 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 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 coul78 e1:m637poj:dz -qnd6lws xzzit t combs will pass through the identified resistor in 5 seconds ooq3dtdm -67xcz :n ite7swzjp6z l8:1nce 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 following simple circuit have thebc48n a.rgi,t0 msoo 0 same resistance, which would dissio.rst0 48a0g cimon b,pate 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 the6oqik.viws487wb qg /i7gm q5 6.0 Ω resistor is 1.0 A. What iv sm 4g7ik 7iog8i/w.5qqb6wqs 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 ser1x6;lhagw)e ries to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 di1elgxawh)6r ; ssipates 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 are connected in parallel to a bnzp)ovs6(t *u(4 /yg:r ouemm attery. Supp(*)esumn:t /(o46ymvzrpgo uose R1 has 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 coim8nez-bzq (2g (p+rsgn45o ct l is rated 1200 watts and 120 volts. What is the maximum value of the curren4z(qb n25getr- zn+opm c8gs(t 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 design dvl,3q k3ui l+sr88qfed to operate at 120 voltsi8 qfsv+u3,rqk38ld l?

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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 tha9gckjjb0vkq 5djawk9jqp./ *+7n, bot is dissipating 36 watts of power jqkd v.on05qj7/gcpkkb9 + *9bjja,w?

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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 ula)h1 *rab *-bshpl:m lr3j4msed to press clothes is marked "120 volt, 600 watt.” In normhsbm:4hrba-lrl*m)1jp 3*l aal 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 following resistances could NOT be produced by a circucz(a -g3e twu70s f(jrfja0 o,it containing only three identieoaj0z73 0 uf(c ftrw,ja s-g(cal 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. Whiiznh 4.pf3rg 4ch of the following equivalent resistances C. g fn4z3r4ihpANNOT 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 values can be connected toge y .h bjmat0))4uv*bgp;b7hzather in different configurations. If all three resistors are used in a circuit, how many different values of total resistan)b7.; huamh gaz*p) t4y0bvjbce 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 resor;hp n( ;u;bfistor is connected 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 usin; rbo(u;p;f hng 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 resistancg(odg;7;,7hyb vpv7k y hgz 7he R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistances is v7khv zgbyg7 7 (hgdyh;,;7po 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 tha*m ,w xp -x)hzs5cq+pet it 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 w+,5 sehcpqxw) -* mxzpater 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 tdfef**wtsqjfmye 37* h1 s -0a 4 ohm resistor that is dissipating 36 watts of powf *ye* 1tq7s-t0 m*jdfws3efh er?

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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 d jd)l8si6v t,hraws 13 amperes of current when connected to 120 volts. If thet hi6l)v ,sd8j 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 it4y3. sgsyx 0pl.mzp-p cost to keep a 100W lightbulb lit continuously for 1 year at a rate0slm yp3s px.. y4pz-g 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 results:p m4nd5t.gf 32e2sgjuo2stu n w6gm- in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the re : .nu2jt2gt smedws45p6mg ogu-f n23sistance 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 s (wgkn/iie: o9ix owns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected k:ie(o/ win9gby 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 circu6adz5w9vz (v 9 c9jyajae-p .dit as shown to th5jaav-6dz9v(d we9 yz9 ajc p.e 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 terxig) 4 )js 4csm lqduj91(1form a simple circuit as shown to theu9srl)j44g) j xdt seic1q(m1 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 battem s(fo*2h a6wrht9 0mery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagra02h*wtr9ofm mh s(ae6 m 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 switch andq e47(btmh q8n three resistors are connected aset7qbq mhn4 8( 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 batteryq0 / 1zdgt+y47edhzejh (al *v, an ideal ammeter, a switch and three resistors are connected as shown.dge z7a1ehl(dh+t* z y4/0jvq 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 right, what is the equivx6l: lc0vhydta1 9 bh2alent resistance? Assume that all wires are ideal, the battery has no itlca6:d12h v h l9xby0nternal 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 res3q-uq 1ggahds/vr4)aistance of the circuit shown to the right with resistg-a41q u qrsdgav)/3hances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 r;rb0-t zg 9mdbuquxq52;,o kiesistors connected in a combination series and parallel circuit to a voltaq5xb,krub9m2uzq0i- t;;o dgge 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 identical resistoa8i tfer/g,w6rs connected in a combination series and parallel f6r ia /eg8w,tcircuit to a 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, 9- t f3 vrv( )z1jcrb+fu9ogap all of the bulbs are identical. Which bulb will be the brigh ft19v(p afzvro-u+3 )g crb9jtest?


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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 arqvsmk2v+ r7r,ebz 8g/ e connected as shown. With the switr 27b, kvs+vr/g8mzeqch 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 yj7adx s3d8+9gzlhyi +r, 5dithree resistors are connected as shown. With the switch open as shown in the diagyd iar d59g ++3yid8jslxhz,7 ram 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,k b3xmom2m+;tg bhi0.a 8wp j8 an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as sh ;hx8+m2tbj bmmkip0wo.g3 a8own 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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