16.09: In the circuit shown, an electric oi a14 wv9n4 (qazm(t 6ple.cmcurrent 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 direction of the electric field through the interior of the rz a(p.4cte6(vm1i l9wm 4oq naesistor?

  98.06: When any four resistors are connected in parallel, the_________each . +0j*nxv u n9:wbolqoj2g3qg resistor is the saulbvnj +0 o:q9w.x2ojqng*g3me.

  06.33: A current through the th4r w*y nlhlb3 ik cwmk8c)j t,+j6p:,qin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much comiy 6c+3cwk)nwr h l4qbp: k,j*lj8t, oler. This happens because

  13.08: Some standard household limp 1;j.6bzeimcy(f g5 ghts are being replaced with LEDs. LED is the acronym for which one of the fo m;cm5( ifejp. 6g1yzbllowing choices?

  05.16: A cylindrical graphite resistor has length L and cross-sectional area Ajfihkrrygc;jfa8t5.2 8en 65 . It is to be placed into a circuit, but it first musth25 .jneyk5c ijgr8 f6af8tr; 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?

  98.20: Wire I and wire II are made of the same r 0-yge(dli0;hb1wovwq o;,kmaterial. Wire II has twice the diamet0;;,(owyv qg o 0w kheribl-d1er and twice the length of I. If I has resistance R, II has resistance

  99.31: Wire Y is made of the same material but has twice ;gii3 fzxwqo(/yqy4)5goauvt- 0 n7y the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a resi(wtaq;0x 5oy 73znq 4u iiv/-)ygoyfgstance of

  03.23: A cylindrical resistor has +-6m;ug k 2g57-wthcfzviz k +sy- wtalength L and radius r. This piece of material is then drawn so that it is a cy-tz;ag g- 6 z7icyu+v-wft2kwmsk5+ hlinder with new length 2L. What happens to the resistance of this material because of this process?

  07.27: A junior Thomas Edison wants to make a brighter light2zs o(k85gdpt bulb. He decides to modify the filament. Hotszd2( g5po8kw should the filament of a lightbulb be modified in order to make the lightbulb produce more light at a given voltage?

  16.07: Three cylindrical/f/ex vyp+bqm6e 4u5)u:gf(lwfl b ;r resistors are made of the same material. The length and radius of eacep/bfv qf;+w/lf u(murlyx ge:)5 4 b6h 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 battery in the :xp7+zugq76n.jadvw following way: “Two resistors are connected in series. This combinati 7w 6jqzu7+av. p:nxdgon 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?

  95.35: The voltmeter in the accompanying circuit diagram has internal resw5 5zwzkug.o5uo p-j*istance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is z. 5juz5gww5 u*ko-opmost nearly:

  97.37: Consider the compound circuit shown to the right. The three bulbs 1,51miivl d.6mb9/g )a/qtuv 3 lx dg4mv 2, and 3 - represented as resigxdv6d5q/91l) mlmii3 mvatu.g4b/ vstors 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 cir(o0r2yfvtpg s 99)crb,phh 5rcuit at the right. If the current in all three resistors is equal, which of the following statements must be tsr0vhb)9h5 9t r(p 2g ropc,yfrue?

  99.37: The diagram at right represents a simple electric circuit composed of 5 3vig7fm -c.sa identical light bulbs and 2 flashlight cells. Which vg-s am3 ic.f7bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the following statements if8, :qp:rap 6f b 6njr.ly.vccs NOT true concerning the simple circuit shown where resistors R1, 8b pcyfna6pjc.lqr: , f.v6r:R2 and R3 are have equal resistances?

  17.29: Two lightbulbs X andY are connectedt8o7n x d h/n)d+lldv2 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 represents wlnlx+ho d)d tdv8 /n72hat is observed?

  06.34: How many coulombs will pass through the identified resibid ;4:jigb7b bf cgn(z.8 z)qnwj6 a*stor in 5 seconds once th)g*b;7.jzi b nw (c:j8 dba6 bq4fzigne circuit was closed?

  00.23: If all of the resistors in the following simple circuit have the sh aug :fg22z:iame resistance, which would:hf2ga z2u ig: dissipate the greatest power?

  98.34: In the accompanying circuit diagram, the current through th als(96 ed+ n7hi ouxh4-j0plje 6.0 Ω resistor is 1.9uxo4a6nj(ehj-0 dsli +7hp l0 A. What is the power supply voltage V?

  97.27: Three resistors R1, R2, and R3 are connected i/r a(rgpn/b idsvc6,: n series to a battery. Suppose R1 sr b(g6n:,dc v//piar 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 across R3?

  99.40: Three different resistors R1, R2 e4u1s,jpehu v cz*x 2s7 adf38andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the current 7e38,a hzvp u2cf*14ejsusx d in R3?

  99.13: A heating coil is rat5 f6n;axm.hj s -:h 6depm8z6 rmivq0red 1200 watts and 120 volts. What is the maximum value of the current under thesi6. vqxpez8 nd mfm;-:605 a6jrhhrm se conditions?

  99.23: What is the resiw apa6xm9cg7 1stance of a 60 watt lightbulb designed to operate at 120 volts?m6ap a 1w97cxg

  03.09: How much current flows through a 4 ohm resinl17i* zh lrqnp/p/f0stor that is dissipating 36 watts of power//lnh z n*10p lpqf7ri?

  05.21: A household iron used to press clothes is marked "120 g im bn1l9rg73 6m5c tk/lbp;svolt, 600 watt.” In normal use, i 7brmkmb 65glp l 1/nc3tg9;sthe current in it is

  01.05: Which of the following resistances could NOT be produced by nc) sj5ei 77nn.gtwu+ a circuit containing only three identical 6Ω rei+n g7. w)uj7tcns ne5sistors?

  94.37: You are given three 1.0 Ω resistors. Which of the following equi 8p cz1f-msy+ygy+-n +v nz,wq(cxua-valent rexyfny+zypc8z+n -w-cgvq-m1(, u + sasistances CANNOT be produced using all three resistors?

  02.06: Three resistors of different values can be connected together in difffzrfu6b om7y25c3r t 4erent configurations. If alc 5r omzb264uyffrt37 l three resistors are used in a circuit, how many different values of total resistance can be produced?

  97.35: When a single resistor issm s+taop/ 3 80c8hwlb connected to a battery, a total power P is dissipated in the circuit. How much total power is di8mopwsca30 hsbl +t8/ssipated in a circuit if n identical resistors are connected in series using the same battery? Assume the internal resistance of the battery is zero.

  96.16: When two resistors, having resistance R1 and R2, are connected in pa9rw0l:cd:(b,j b7 nj8, / eqrv sqxrgerallel, the equivalent resistance of the combination is 5wx/ ql, redrj7en9 cg8s ,:jqb:b0(vrΩ . Which of the following statements about the resistances is correct?

  02.46: A hotplate is designed such that it has aft*5xnqc1sh lb-d ()d resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it woub-*ql f)d (x5tcd sh1nld 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 dissipating 36 wgo z/5q h6 e:atz- 1qejpm4o 23ua9cmzatts of uzq e 3mja z5c-ag96hm2qpoz1e 4o /:tpower?

  01.24: An electric heater dr47 kcq:x2tyzdaws 13 amperes of current when connected to 120 volts. If the price of ele dzc2ky7x :4qtctricity 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 kep4x7p/vcvh wxe; md* akf.7)i)qm /mvep a 100W lightbulb lit continuouskvmhei */7)mq)wa xp7 mc.;/v4xpfdv ly for 1 year at a rate of $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A through a lightbulb results in a power of 24z 84ww5n-+kn1 j s4)diujwozv.0 W associated with the bulb. Which one of the following choices best represents the resistance of th4s w di) w-8o4 1wvjzjkzunn+5e lightbulb?

  01.10: Each member of a family of six c-f. v)q7 iq-nry jc.l (lb(pgowns a computer rated at 500 watts in a 120 V circuit. If all computers are plugg-bfj c l(l(qqgn).p7vrc-i.y ed into a single circuit protected by a 20 ampere fuse, what is the maximum number of the computers can be operating at the sametime?

  03.16: A 9-volt battery is connected to four/n(fhch,+2g s4e rzyr resistors to form a simple circuit as shown tf nzry/, h42g(e+rhcs o 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 battery is connected tukf 8n /ufl/4m(/hemok o .y(oo four resistors to form a simple circuit as shown to the rig o(4o.f(kh // y/8umum kfnoelht.
What would be the potential at point B with respect to point C in the above circuit?

  02.21: An ideal battery, an ideal ammeds0pyd )g)c ip:p3p:qter, a switch and three resistors are connected as shop:dsqp )3gicp0)d :ypwn. With 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 idep-d bb,-jm bu5al ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampe , pb-jmb-5ubdres.
With the switch open, what must be the voltage supplied by the battery?

  02.23: An ideal battery, an ideal ammeter, a switch tsjkj5*o ;1i xand three resistors are connected as shown. W5is;o1*k xtjjith 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?

  12.14: For the circuit shown to the righ 7yk48j duv4i*fk+y zst, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have id kvikd*zujs y7f+y484entical resistance R.

  09.07: The equivalent resistance of the circi7gg7. * a olnlo+/k h46xqvynuit shown to the right with resistk g6n/o.onx7vgi+ alyq 74*hlances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below shows five identical resisto,h-vb0fhy ,uw2g -zmy rs connected in a combination series and parallel circuit to a,yugf-bz0 v2hwyh m,- voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows f5y-qtmb(hgtx;/*a ec0d) fi rive identical resistors connected in a combinationrfaitx/*gt(); mqeh-y 0 db5c series and parallel circuit to a voltage source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit diae6qp4v+g ix,bh + m2/ ya4ijddgram, all of the bulbs are identical. Which bulb will be the brightest,d+jhe42gvix/myqa4 pbi 6d+?

  02.21: An ideal battery, an ideal ammeter, a switch and t8yh9e* jdfe:v,x tgj-hree resistors are connected as shown. With the switch open as shown in the diagram thex9d*het-yjg jf:,e8 v 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 switch and thr0f90ugr r9d ueee resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes. fr u eu90r9gd0
With the switch open, what must be the voltage supplied by the battery?

  02.23: An ideal battery, an ideal ammeter, a switch and three resist wyn de/fmy +lbc*69p*wy)h1jors are connected as shown. With the switch open as shown d6 9* p/n*yy)j febh1m wc+ylwin the diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?