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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, ancur/kqw0d2 +rofoj 1vkx z-* +e/a4st electric current exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the directio/vkaft+z c+- w0ur*jqexo 2 r14sd /kon 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 yv5n/qtd:y zy(2j /m3ia 8zkh resistor is the mtqvh/(52yi: az/y 3jn yzkd8same.

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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 throu0cdr+( ui e(tkgh the thin filament wire of a lightbulb causes the filament to become white hot, while c(0u (i+krtde 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 lightdhib bsp0 ):)ss are being replaced with LEDs. LED is the acronym for which one ofsd )bp)b 0s:hi 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 le/gzfb5u1j r7p ngth L and cross-sectional area A. It is to be placed into a circuit, 5uj7g pr1bfz/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 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 samkh7+31 tskd zjaz7cw8ux+ . dle material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has3jcs7z ddz+.ukw a7xh lk8t1+ 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 samvnil4xn07 7zlm- n(o fe material but has twice the diameter and half the length of wire X. If wire X has a resisfnz n7m7ll( xiov 4n-0tance 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 of:7wjdge e-yqg; bo52d)-j xqz material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of thigbw75)- -qezq d;y:oj 2jgxed s 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 dq l:ahd-k8xa,,tzl h:ecides to modify the filament. How should the filament of a lightbulb be modified thlk,xl,:8da -qzh:a 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.w 6ri:k6 plbght4)2 nc The length and radius of each resist 6ghrltw:nci2) 4 kb6por 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 coz0il d (1ds5cjet ) +gje f6),fdjash6nnected 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.” Whzf6e jashe5f(dtd l0j sc+,ij))61dg at 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 circuitsbow0d(d/c ;c:2ges55hosj e diagram has internal resistance 10.0 kW and the ammeter has internal resistance /jgcbo5s(h;eo w2:cse d5 ds025.0 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 bulbs 1, 2,was7)pz:qt)dd uq) f, andu) pqt :,)7)dzdsa qfw 3 - represented 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 the right. If+ebfv4 e5tq 3zxqi.r/ the current in all three resistors is equal, which of the following statementr tvef3i+/q5. zb q4xes 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 r 3k 1obn6xnqwr 9zwru.x230 lhight represents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (orux.w rnr0qw9zl 3oxh 2k61nb3 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 cin-f*i gx hl6b9hr + o:nlc0r3krcuit shown where resistors R1, R2 and R3 are have equal resini0cg36rknh f* oh b-l l+x9:rstances?


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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.29: Two lightbulbbns,hg-k 7,fr j2bo+ xs X andY 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 reprex2n ,g-s,o7rh+ j kbfbsents 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 couxckb +q/ z i yoxwh22ep+1l7,m/sufa6 lombs will pass through the identified resistor in 5 seconds once the circuit wazca2yw 1/m /f2i7qoe h++,ulk x sxbp6s 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 follo kyw6/,;,(e vkam(vy h7d chkswing simple circuit have the same resistance, 7,dy/k 6sha h (vecw; ,v(kkymwhich 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 6.0c3 a9s9 ou;krv Ω resistor is 1.0 A. Whakca u;9vor39s t 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 con54 o brysfy3m9nected in series to a battery. Suppose 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 v ys5 3ro9by4fmoltage 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 resisto ser/*0r28qc dyo 0c qb0oqgv+rs R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, anor 08qc0dcg y0rq/+q *vboe2sd 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. Whattl gc:sb nik *a 1mf:2//qrvf; is the maximum k r2fvcfnmt ;/: qag*s1l i:/bvalue of 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 resistance of a 60 watt lightbulb designed to operate a+b zf grvefgx b 81x(rik73h8*7bme :vt 120 vrb+ff vrbix emzg v18gb h(* 73kex78:olts?

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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 .v6 foeadf)nuy4 ocwk:ql.48;r z kh1a 4 ohm resistor that is dissipating 36 watts okozo8lu6.ra 4 e14hqf):d ckwynv; .ff 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 was ty-ww1do+7abdk p7 9tt.” In normal uo+dds-pbt 7yk aw9 17wse, 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 rh*qd5d su1-1:okrnp9;ic abz/8 o u zcould NOT be produced by a circuit consdndaoru-:z; 1rh zok* uip9c5bq / 81taining 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 resistors. Which3vnz6 dj) uer 4w8/nkb of the following equivalent resistances CANNOT be )bvd/48 nez3wk rj n6uproduced 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 x gh,ns3vi)3va3vp: o m:ux0w of different values can be connected together in different configurations. If all three resistors are used in a circuit, how wi0xmaho,gv3 3 nv::v3psu x) 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 to a sb 3zfov 5j21bh 3nkw+battery, a total power P is dissipated in the circuit. How much total power is di3jszn+ hb1v f b235wkossipated in a circuit if n identical 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 conneu7 hlavpkld 0h:i6g,6 cted in parallel, the equivalent resistance of the combination is 5Ω . Which of the following s v:gldakh,6 6lihup0 7tatements 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 resistancpo) pe 8kx53 4xc1t7zq p)tuofe of 12Ω when operating at 120 volts. Wup15t)cqt4pox oepf7x8 z)3khat is 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 flodrg5bjn rpu: 6q)1kc (ws through a 4 ohm resistor that is dissipating 36 wattsrqgd 6 j(:pc5ru)1bkn 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 1we -xdl/f g)ibz,0i4t3 amperes of current when connected to 120 volts. If the price of electrfizb e i,4)d/ltx0 g-wicity 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 woyq5n7y0 yeeq (uld it cost to keep a 100W lightbulb lit continuously for 1 year at a rate qe7ey( y5n0qy 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 Ax+iiytz zytzu 28 d,(; through a lightbulb results in a power of 24.0 W associated with the bulb. Which ( z+z;z,ytd8xuti 2iy 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 a computer ra:gm1b ep6:mz 5bzh(0hd1 epfated at 500 watts in a 120 V circuit. If all computers m01h p6:zbb5d pehagmf z:1e(are plugged 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 connectw8ez xsox/ 6w* z8y1nted to four resistors to form a simple circuit as showneswy*n 8x xz z1/8wot6 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 battery is connected to four resistors to form a simple circu dobyk:l4g8;o /wg: foit as sf 4;8kool:go:/y w bgdhown 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 and thra)xgzu s 9rmm 75tq,o7ee resistors are connected as shown. s,5m 7uzmx rg7ot9q)aWith 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 i.nnhjk ds:f7 4deal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagranfdj k :7h4.snm 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 resistors are wc4 5pz gwhhoec3 ; l -n6yl-npn*:xp/connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 lp*/lzcox n-wen3wyp-: pg4c5;hhn6 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 thex 6qgh7i00wkxqx.c b yo, 05pb right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identica ,005obpxkb .gcx67ix0hqqw y l 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 c7 zbnl n;0m jm,q4ju(alg,h: jircuit shown to the right with resistan ,hmjnznaq0:(g7jul jm b4l; ,ces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 fiv0jyn2kw,p e+ te identical resistors connected in a combination series and parallel circuit to a voltage source. wj0n t pky,+e2
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 resistors connected vc w.f0itr mx*2et 7t;in a combination series and parallel circuit e *rvt;m27fc.ix0tw t 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, all of the bulbs are identesmr/ /x 5jr4evc zyignwxl7- m-7q,,ical. Which bulb will be the brighter4sxwnqg/,7xm i l - 5jmzcv-r/ey,7est?


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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 ana2ezfgfwovacy1 9/-/d three resistors are connected as shown. With the switch open as shown in the diagram the ammeter readwo /91yzaef-cga2 vf/ s 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 th gc3 1r9oscbn6ree resistors are connected as shown. With the switch open as shobnorc396gs 1 cwn 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, an ideal ammetere -xj98p -shpc, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 28 s eh-cpxp-9j.0 amperes.
When the switch is closed, what would be the current in the circuit?


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