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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 metal resistor cosmm+7n j/vt 7g:5 )awx2qqlwrnnxqwsg+:l 5twj 77 vmmnqa)r/2ected 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 p4m.mfn njb g/,arallel, the_________each resistor is thn ,f. mgjnbm4/e 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 throug1mo.os6i jm8zhh3hc9 hh9d j)h the thin filament wire of a lightbulb causes the filament to become wh69hhhs8 1omh j c dhj)9imz.o3ite 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+iunze rrz5m x49d+o5 household lights are being replaced with LEDs. LED is the acronym for which onru4e+i dz9 m5x n5+ozre 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 croseg ru th7dh( vn*0vl60s-sectional area A. l*6( tn r e07dg0vhvuhIt 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 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 ma-f )g0:kg7wrpjq y4 hcde of the same material. Wire II has twice the diameter and twice the length of I. 0pgg-q7k4wcy)f j: h rIf 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 of the same material but has twice the diamebpi7 sc:c7x;e-lv tp5ter and half the lengtspb;77l x :epc5it-cvh 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 lengthm( mguk :m9ic) 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 resistance of this material because of this procesum:icg)( m9m ks?

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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 phlt 1g)ofghi0h89+hc gl:u1bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the li9p)hlihg fthc1:+ hg gl0 8u1oghtbulb 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 rc :/l k0or:n +9jvwotdnn2e(x esistors are made of the same material. The length and radiujtr dn9 vo/:lew0 ( nxnkc:2o+s 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 resistanc jjm qkg*1h+*n,s-jsbe 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 connected in series to a fourth resistor.” What is the equivalent resisqkm shjb+j*gn-*j1,s tance 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 dia53l mcjlert:9 gram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter jmcl:9lt e3 5rreading 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 co6 j8l(,jku 8y ggbldg4mpound circuit shown to the right. The three bulbs 1, 2, and 3 - represented as resi48,6gjdgk8 lj lg(byustors 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 the curren.a2 9 4j +gtytmyfvmw0t in all three resistors is equal, which + f4t.0 v 2waygyjt9mmof 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 re i4dy u//hbdgp*2ectcb/1)acpresents a simple electric circuit composed of 5 idee /1thbp gy2uccdd/c*i)4/ba ntical 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 con edi; /tt9,ti.wa(czucerning the simple circuit shown where resistors R1, R2 and R3 are have equal resista. ci/wutz det (9ati;,nces?


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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 0h3q ilwbumsd8 2*-l5cn1 scp 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 rs hil8 -20wcpsl bd*unq35c1m epresents 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 coulombs will pass through the identified resistor inv/2: um* e64xcxvaw nn 5 seconds once the circuit2 uw 4mxv*e:c/xnnav6 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 the 9vizp3b.2 ;r85n jpj ( eznfjasame resistance, which would dissipate t3bp( ev28njj 5 jr ;iazz9nf.phe 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 diagra1x:tj k 6wkcwl28q y:nm, the current through the 6.0 Ω resistor is 1.0 A. What is the power su6:kwjcw28 :kl1 ytqxnpply 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 aqyvdz/m x r6:yj2 p0l8wg81 were connected in series to a battery. Suppose R1 carries a curd2 wmp g1:veq8z6xy/l8ywr j0rent 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 resistors R1, R2 an5 hyu1p3gnkc0m tr )a5dR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the current in R3?)3cag5pyhk1 r 0 munt5

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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. 6,4tl(8hykno 8 a1jjouz,gtq What is the maximum value of the current unj6tloznh( 4ko,uj1a, 8y8qtgder 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 at 1 23pzole4 ucf+iz0zy+ 20 vol eio fuyz3+c4l0 pz+z2ts?

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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 throug .mpk +ehb12 tdw 0wuccy4gu;4h a 4 ohm resistor that is dissipating 36 watts of.w4g0u+d1 t;cmb 4 pkhyuwc2 e 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 n7gbvi p8jh:(c:l u*w to press clothes is marked "120 volt, 600 watt.” In normal uh( vcwbpi::j*8 7 glunse, 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 7)5v*xz n:v *ccedapoby a circuit contacxn5c ozp7v*a)d *ve:ining 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. Which 0cae tue7rt,miv 5ii3.yt f(0of the following equivalent resistances CANNOT be prod30icaerm (i vtt.07yuf eit,5uced 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 zym8p1fd r v-. fb/k,cvvq-k9of different values can be connected together in different configurations. If all three resistors are/b9-.z vkv1rv, p kq-fym8cdf 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 to a battery, at n/avxv0:zm 0 total power P is dissipated/vt:av 0mxnz0 in the circuit. How much total power is dissipated 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 connected in paralsjyo0le 96. qllel, the equivalent resistance of the combination is 5Ω . Which of the fol lo0s. 6yj9qellowing 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 hap r ,wicbp7-5y7ay )eas a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take tow ,aair5yc 7 py7eb)-p 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 resistor that is dissipating r /c+ +d3miunfs46wur 36 watts of po+ dn3i ur+mfrucs6 4w/wer?

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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 )qfm e*ymv0t:draws 13 amperes of current when connected to 120 volts. If the price of electricitft )*y mev0qm:y 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 hd; 8vdc /u3a szw l6) -jgbmd,xh18lihow much would it cost to keep a 100W lightbulb lit continuousd-;xidz s dlg1,6 mjh/)bvch8 u3 8awlly 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.3g0nynk glk4 of 4.00 A through a lightbulb results in a power of 24.0 W.nlkng3 y40kg associated with the bulb. Which 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 rated at 500 waxev yn( (x+z) t*bfq2qtts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the maximum number zv(qbyt*q2 )f e(x+nx 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 sim6zb v) frq 5bml+b;k,gple circuit as shown to the rg lz q5bk,b;)rv+mbf 6ight.
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 simpiot:zb6r.n 1 dul 2xuzw1)k,nle circuit as shown toriu: u62d .,l)wn nxzbo1kzt 1 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 three resistors are cn9vbv/ji19huiw7x 1z 6a: ei qonnected as shown. With the switch opennu61:v 79aivh/j19i xwq i bze 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 am qnbgx2 o t-0(nkc1r,lmeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagntnoxck1g2,(0q l- r bram 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 i kd d7jvq3-wm *c/ho-and three resistors are connected as shown. With the switch open as shown in the d jo cd--7mhvkq/iw*3d iagram 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 equivalent resistanceww8gws7g;,5)b-uf*yika f u j? Assume that all wires a f*u7wy;fa5w8w,)sgbj-uik gre ideal, the 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 k,+tc2r6kzwf. e+faw.8 imanikk+ gds/: n i* right with resia +mi r./ia fnn ks+ ke8,:d6f2w *c.kk+ztgwistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 sho8-:ev2l r0fltv.gc* yazxx 5 fws five identical resistors connected in a combination series and parallel circuit to a vz8r5xf0 2y c.el*a:tlf x-vgvoltage 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 resistors connected in a cou+j*q +o pxn.uvoy,f 8mbination series axnv.+, op*ufquo 8jy+nd parallel circuit 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 tt+6x7s7ab 1fyfew 8zdhe bulbs are identical. Which bulbfbxs 6 +8faey7wd1zt 7 will 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 are con)5 u f-ltzbxi)nected as shown. With the switch open as shown in the diagram the ammeter rea)f-)ut 5lxz ibds 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 utx0b u -u:9inswitch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reantu -u:09xbiuds 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, adcqdw ( lgwfb31ffagd7ktt 3n(.)l( 9n ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shontlwg()dff k lg(tdd( .b713q3w9fa cwn 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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    总分:50分 及格:30分 时间:不限时
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