16.09: In the circuit shown, an electric current e(3ucq.6+lbad cas, mvxists 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 d,m.cbd+l6 qu3scva( airection of the electric field through the interior of the resistor?

  98.06: When any four resistors are con rej*act9q;g.nx20 o rqc3q0gr+ e6qcnected in parallel, the_________each resistor * enrgq.0re;0a9x2t6orjqg 3qq+c cc is the same.

  06.33: A current through the thin filament wireb+oelim0lqtj *:m)w- f6j hl 0 of a lightbulb causes the filament to become white hot, while the larger wires connected to tl0 lj6l o b +)fjeqm:im-t*w0hhe lightbulb remain much cooler. This happens because

  13.08: Some standard household lights are being replacewt o8jc;q nnc4sbk0-vmcy;*9e y al */d with LEDs. LED is the acronym for which one o ;y bnk9ac08o;jcwem4ctvn*lsq*/ -y f the following choices?

  05.16: A cylindrical graphite resistor has length L as 4k70db ftos4nd 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 resistivity of the cylindrical rk4f0 b ss7od4tesistor?

  98.20: Wire I and wire Ice lbkv)z2bd: 8qa5(u 6a wqh.I are made of the same material. Wire II has twice the diameter and twice the length of I. If I has resistance R,uc a8kl 5bwvhed(qqza):6.2 b II has resistance

  99.31: Wire Y is made of the same material but has twice the diameter api1 d i7h16tkdnd half thip6 hd7di t1k1e length of wire X. If wire X has a resistance of R then wire Y would have a resistance of

  03.23: A cylindrical resistor has length L and rad . b g:)6q4wyl8f2n6 upmzwchxius r. This piece of material is then drawn so that it is a cylinder with new length 2L. Whatx ch)pfw6z 48u2lwbqm :g6 .yn happens to the resistance of this material because of this process?

  07.27: A junior Thomas Edison want whe9pfe)kxh;gidh . 3i8 5y:ws to make a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the; .y ef iewhxk5gd8h9wh)i:p3 lightbulb produce more light at a given voltage?

  16.07: Three cylindrical resistors are wpyx y 7ax6.8s:w w4zq:(q .3tllyz bmmade of the same material. The length and radiusa8:.yxpyyz:slblqw wtw .q7(3 zx 6m4 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)?

  13.22: Four resistors, each of resistance R, are connected to a batter-zy wnw- nlj rm)4o)4oy in the following way: “Two resistors are connected in series. This combination of two resistors is connected in parallel to a o )wlo4 --rwj)znny4mthird 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?

  95.35: The voltmeter in the accompanrz7c o* bzx(,cying circuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The vzz*(ro7 x,bcc oltmeter reading is most nearly:

  97.37: Consider the compound circuit shown to the right. The three bulbs 1, ey-bukbd m( gy90 ald90(ceq (2, and 3 - re(yue90 g-0abme q(lc(9bdk dypresented 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.

  99.30: Given the simple electrical circuit at the right. If the current in all nth+g8lv+ -.hmezad 9ovei(m 3q46em three resistorso+ h3 mq9vmvmi4zehl8 +n . et6gd(a-e is equal, which of the following statements must be true?

  99.37: The diagram at right represents ap 0ve0t,1pf rhp9+ug5f;ttcc simple electric circuit composed of 5 identical light bulbs and 2 flashlite0ptgt10 v5u ;rpf, hcpf+9c ght cells. Which bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the following statements is NOT true concerning th,- kh fxl.;pjw*m uom*zr:) koe simple circuit shown where resistors R1, R2 and R3 are have e l) m,mu-kpx;wr.o:kf*hz o*jqual resistances?

  17.29: Two lightbulbs X andY arehnd ff:1bh3j q sn-a5,m .vfz) connected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. I,: .vn5z3)fh-1q jbn fhdamsff 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?

  06.34: How many coulombs will palibvy(c+-zfiq/ 0/ n fj+ni0 iss through the identified resistor in 5 seconl(iq f +jc+fi z0b/iinv/y0-nds once the circuit was closed?

  00.23: If all of the resistors in the following simple circuit have thelzax 1:m qdgs*j37qp;7.wsbx)kez+m same resistance,.e:dg aq)wb+j7*px1s7km3zz s l xmq; which would dissipate the greatest power?

  98.34: In the accompanying circuit diagram, the current through them (javc(mzb j:h4c hj )70,bvj8dbn8z 6.0 Ω resistor is 1.0 A. What is the po7,abj(4jvj j8 b):nhczh c(b8d mz0mvwer supply voltage V?

  97.27: Three resistors R1, R2, and R3 are connected in seri8ke o fs8eiaq;j1f 8+des to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipaskdea88j1+ f ;qo 8feites 6.0 W of power. What is the voltage across R3?

  99.40: Three different re5v.9 h6di nmiesistors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 in vhmd5i9.6e W. What is the current in R3?

  99.13: A heating coil is ratedc0:pxs18x xog+ac/oq.g1nema cdv5 l2uj u 0- 1200 watts and 120 volts. What is the maximum value of the 0 a+05a-/c xongqxesu1ccx:v g28ljdu m.1op current under these conditions?

  99.23: What is the resistance of a 60 watt lightbulb designed to operat fmi:bjbu*xnk-.r czs8 hf, 1)e at 120 vobfx1 fs u)-bmrih.c n*:jzk8,lts?

  03.09: How much current flows through a 4 ohmlr4; qnl o8v/xqjg13 j7dm5eq resistor that is dissipating 36 watts of poq/1j;xln5ojq 8lr7 4 meg q3vdwer?

  05.21: A household iron used to press clothes isp 4;xz(m)9n wupn9ruj marked "120 volt, 600 watt.” In normal use, the current in;mw9z pnrunu9xp(j) 4 it is

  01.05: Which of the following resistances could NOgg e nb 4;nqx8g1/:tbbT be produced by a circuit containing onl:t 8bqg bn;n41bg gx/ey three identical 6Ω resistors?

  94.37: You are given three 1.0 Ω *g bje:2xkzz:f1 :yeyw c s5 *awqk5g8 resistors. Which of the following equivalent resistances CANN1bz2e5 ggak 5yeq*c y:8kw::*f zjw sxOT be produced using all three resistors?

  02.06: Three resistors of different values can be connected together i2zhk x /gxxj40n different configurations. If agj 2/z kxhx4x0ll three resistors are used in a circuit, how many different values of total resistance can be produced?

  97.35: When a single resistor is connected to a battery, a total vr3oy +e4k gx4gf62xu uu.jf/power P is dissipated 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 e4j/g x6 ug3rvu.ox+42fy ukfresistance of the battery is zero.

  96.16: When two resistors, having resistance R1 and R2, are conhx/plw,r6hj* tr- a 0 g:wd*ttkxk* h:nected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following stateme*xttr* w*tdxr:p 6kh -, wh l0a:hj/kgnts about the resistances is correct?

  02.46: A hotplate is designed such that it has a resistance o)n*f l zfmkp fj5h)r+s5k6ns- f 12Ω when operating at 120 volts. What is the minimum amount of time that itk5fjl6r* )pfzm hnnk+s-5s)f would take to warm 0.45 kg of water from $15^{\circ}C$ to$85^{\circ}C$?

  03.09: How much current flows through a 4 ohm resistor that is dissipfypk*c7f1 wa cz:dxy(+ y+zg.qkn v2,ating 36 watts (y,2+ y:f dqn*cx1cyzk7wv. p gz+kfa of power?

  01.24: An electric heater draws 13 amperes olcj2 w w8(g0gkq8p:r qf current when connected to 120 volts. If the price of elp8g(:jw gcqq8kl0 2wr ectricity is $0.10/kWh, what would be the approximate cost of running the heater for 8 hours?

  08.05 Approximately how much would it cost to kee*gl,h 5y+tth ep a 100W lightbulb lit continuously for 1 year at a rl eyh5gt,th *+ate of $0.10/(kW.hr) ?

  12.09: A constant current of wt1x*awd47 /go1qp4 ija 4oef 4.00 A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one ofaf4aw4*1togq 4p/7i1 xjdwoe the following choices best represents the resistance of the lightbulb?

  01.10: Each member of a family of six owns a commd kp c(c7t5h2puter rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the mtc h5(c pm7kd2aximum number of the computers can be operating at the sametime?

  03.16: A 9-volt battery is connected to four resistors to form a simpleduayjk. 553iz7c-6g vp hbe3+zrfxu. circuit as shown ta . 5gc5uzdvjrk-33.hfb + xpez yi67uo the right.
How would the current through the 2 ohm resistor compare to the current through the 4 ohm resistor?

  03.17: A 9-volt batt1p+(c cdkja4 mxt38okery is connected to four resistors to form a simple circuit as sho3p1j(4+c dxa8kcmot kwn to the right.
What would be the potential at point B with respect to point C in the above circuit?

  02.21: An ideal battery, an ideal ammeter, a switch and three resiezliym( 3 al2 z.ym)2zstors are connected as shown. Wilylz)em.y2zz3 (ia2m th 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?

  02.22: An ideal battery, an ideal ammeter, a swfy /y9,x cytukc-gc+:,kl 7dl itch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampeyc+ t/yc,lu :,x79ylcdkgk f-res.
With the switch open, what must be the voltage supplied by the battery?

  02.23: An ideal battery, an iel* )21hyabr udeal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperear1) h l*uby2es.
When the switch is closed, what would be the current in the circuit?

  12.14: For the circuit shown to the rightwm*6(fln 3ljsp nam(), what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have ident 3j6l(n snlm)( ap*wfmical resistance R.

  09.07: The equivalent resis+ub(dwvvct 06tance of the circuit shown to the right with resistances6cb tvwdv(+ 0u $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below shows five identical resistors connected in akzt7awu e-; mguezd8) i9.q 6x combination series and par.aw6 ;8e )97i-xg qztuzukemdallel circuit to a voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows five identical resistors connect6we(:aay7 wrjh:bkc4 ed in a combination series and parallel circuihbk a :7ajrwcy:64 (wet to a voltage source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit diagram, all of thet bimss,7tz7.qgov7 * bulbs are identical. Which bulb will be the brim,7ioz *t .tqsbgs77 vghtest?

  02.21: An ideal battery, a 9+(smx4/a 0u 2w+exybud+i3qfepev an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.u(wmap/ 2e 9qexfs0b ua+viyd ++x4e3
With the switch open, what would be the potential difference across the 15 ohm resistor?

  02.22: An ideal battery, an ideal amm8 crg3q;a:o aueter, a switch and three resistors are connected as shown. With the switch open as shown in the diagra:aa8qu g 3orc;m the ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?

  02.23: An ideal battery, an idbk c er7oqt,7ug7bu kg m e3,wd/ye98at4t/k( eal ammeter, a switch and three resistors are connected as shown. Withed gttwo7/7 3g7berqk 9uu, k,y4bcek/(am8t 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?