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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, agd, 2 o,ny k5ywna,)yhn electric current exists in the metal resistor connected to the battery. y)ydhkn a 2,,yo 5,wngWhich 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_:n,ku *n) pncq________each resistor*nnnk,) c:u pq 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 of a lightbulb causes t l,39h m:ogrrhhe filament to become white hot, while the larger wires:m,3g rr9lho h 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 lightb6wiyseghlr-77 . b50ww n6ykx8;umg s are being replaced with LEDs. LED is the acronym for whic k6y7i .lgwgbmr5shx e bu78wyw -n;60h 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-sectional areal+)k a6)pxx5o rnh+tyb7q.n.y, nvs u A. It is to be placed into a circuit, but it first.ou 5nn)vqb s+px a,6+k7yth.xr ) nyl 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 madeyc qv y9;rnz61 of the same material. Wire II has twice the diameter a; 9ynrzyc 1vq6nd 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 of the same material but has twice the diametejtkg1;h:*e t+a/+tiq ycs :rh r and half the length of wire X. If wire X has a resiegh: *tq;hyatisrjk t /+1 c:+stance 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 materiall 4e24ugbzmk+2a,n ag is then draw2u ,b2zkng4amela +4gn so that it is a cylinder with 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 dgagx 7aknl 64b0w:qs)ecides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce mow4x a :s70nq6)kblgag re 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 sg(/yjsy j)y) eame material. The length and radius of each resistor is: gse/yy)(j)jy
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 a battery in tm(x8+kcb2pelyj ; g /the following way: “Two resistors are connected in series. This combinpt8g2 cjl+ym(/e x; kbation 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 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 interne5y1olfzib* cs;q*+ . 6vnp mhal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The mcbv5*.1zp+eo;qhsli nf6* yvoltmeter 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 bqckj,s;3 pljp6k k g5vq4 ql,nch )2g2ulbs 1, 2, an)2p n2 cqjc ,kvh43gp 6 qlj5,gqkk;lsd 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 th wmz re(ye/ z+wv7wlfv49+z f1e current in all three resistors is equal, which of thefw9 f7v (+m4+vz wery/1lzzwe 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 re5q+ wxwkmb 85kvegtump65 (*dpresents a simple electric circuit composed of 5 identical lig*u(g + bxdtwp qk6e85w v5mmk5ht 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 osu.yk4e)hp ip.s x34 circuit showh4xoypk s)su.3pi e4. n 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 are connected in segq lwvr(7 d,;gries 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 th;wvl(r gd7,g qe 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 coulombs will pass m*** d0gkb7 rdndc:*(, 1d uiuyebovdthrough the identified resistor in 5 d(ubk,ou0r dde**c m1vid * 7gnb*y:d seconds once 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 h32(qo xmd wj4the same resistance, wmwdo 24 qj(xh3hich 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 circuce.e2 lu(f1 whit diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the power e.fhu( 21ce lwsupply 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 pr6 xa1 u)ooqg4) 1tzpR3 are connected 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 voltage aaop1z gu)roq16) tx4 pcross 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 R1wiaj)uir l;09, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V air ;l9wji0) uacross 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 wat,4uv0nvhwvqp . (u4r 8.s asdkts and 120 volts. What is the maximum v 4(hq,s08k ru4su.vnd. wapvvalue 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 ;2ivr(vlk y /pw; yc+qoperate at 120 volvq( ip;vw 2y+y l/kc;rts?

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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 curren3dype)+x,: tsna 1cpyt flows through a 4 ohm resistor that is dissipating 36 wat13 +e) :yas,x ctdnpypts of 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 "af 5pf 7-ycs;cb:m5/ bu +tvgf120 volt, 600 watt.” In normal use, the current in ityumc sg5acbb7v: ptf /f; -f5+ 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 follow bt*) d0mnah3vib,2mhing resistances could NOT be produced by a circuit containing only three identical 6Ω resistorbtmbn2 3,)hv ah 0i*dms?

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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 of the follos 6 iz/o1x6k-o+s24sekdmdnkoj 4u. wwing equivalent rekx+s o4zm/.e4ui66oko2k-d1 jns wd ssistances 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 different values can be connectedn-; wi+83,omshad2y2imk drg together in different2-ygi2a+ w hd8ri;so, knmm3d configurations. If all three resistors are 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 as7b t5)(vhb k8ywm/oa battery, a total power P is dissipated in the circuit. How much totaotwk8h 5y7mb)ba/v s( l 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 reog*.rz*pp gr wi*b1h,sistance R1 and R2, are connected in parallel, the equivalent1 *h*zbo rp*rpw.g ,gi 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 hjaq x6sb3(ad k 1j+2bhas a resistance of 12Ω when operating at 120 voh3j q2b(sjxk6 a da+1blts. What 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 flows thkp)z jmjtw5( e+8fn3 mrough a 4 ohm resistor that is dissipating 36 watts of powerwjm mptz(jk3 )5fne +8?

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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 h3y8ta85 zf9v(b hgl y13 amperes of current when connected to 120 volts. If the pricl 3b58 zyhgv9yh8fta(e 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 it cost to keep e, ib :2p/mhvxa 100W lightbulb lit continuously for 1 year at a rate2e/mvpi :b,xh 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 4.089u 6ofdzazagvwq9 r r6 j;6-1h6 kmgo0 A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the ligho z6auw agj866;f- gzm9krqvd169orhtbulb?

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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 ow 2w;uuq o+;0bj;i hjhbns a computer rated at 500 watts in a 120 V circuitw;;huqbij hj0;u2o+ b. If all computers 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 connected to four resi2n t, x,(4 u4wseq(*ssb+kz-ms2ki ir vnbee:stors to form a simple circuit as shovm2(4,b:b si,ui2qe(sk sseznt+ r xwnk4 e*- wn 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 kyhph8;ppzk,+;oz wk 2 k9z((ar1gb mcircuit as shown to pzr;kzypoz9hph2, ( +m;k8w b1akg( kthe 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 at0c6l:phcqd8 ypbddg-4g 5 2;ou *h kqmmeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperespu0hcqgyq;c82h ptgd: -lk*64o ddb5.
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 o q(tzo: 75(w apwgjt1and three resistors are connected as shown.o:jowtwg(z7ta5 pq 1 ( 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 battery, an ideal ammeter, a switch and three r;r l u-wn p1c* y0+rjfp6 i.q68uiekybesistors are connected as shown. With the switch open as shown i.en;u q u *lp -f+yji 6pykcbriwr8016n 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 righ8pr;v4tv/f; 3gr rp5)s cvswft, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistan)5rsswfvr;/r; 4t 3v cppfv8gce, 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 right witd;63ruv5d b wp(ix.:tx*/mwmy7kmu v1;z anth resista1 uax nm 3vbkm;m *uw7 yw5tzi:;vdrt6dxp /.(nces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 ident7 f9x gnzvekuo, c3i,:ical resistors connected in a combination series and parallel circuit tufxzce,k7 3:n9v o,i go 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 below shows five identics 8f83) +jyxvzg cqmphmq7 h1:6s g7ygal resistors connected in a combination series and+8g) m6qjq hgz38 cyxgvssph7my f71: 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, as5 -7ww 1rlyucll of the bulbs are identical. Which bulb will bcr syl1ww5u -7e 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 res;8 j-1dp;bld5g8xsrela (k tu istors are connected as shown. With the switch open as shown in the j(;sa xpdl 581g8ktber ;d l-udiagram 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 threetu(d c0ugp c(lnai69( resistors are connected as shown. With the switch open as shown in th d(a(6un ctciplg09( ue 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 ammeter,rgx *uji ln/vsyv1-c8hl ++n+ a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0-1y* +cvxl 8 +uj/ hgliv+rsnn amperes.
When the switch is closed, what would be the current in the circuit?


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