16.09: In the circuit shown, an electric current exists in the metal resistorvsf8u-4v-:pz l x m+oj connected to the battery. Which one of the following choice pvfm8-+slu:jx-zvo4s best describes the direction of electron flow through the resistor and the direction of the electric field through the interior of the resistor?

  98.06: When any four resistors are connected in parallel, thesswaa( eaq ++.a:ul (r_________each resistor is tasl qwea(.:aru(++sa he same.

  06.33: A current through the thin filament wiyuk(zssm 8,e8oz 1,jy re of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens becauo,(zsjk ,s1yz8 mey 8use

  13.08: Some standard househl 9d6d 5b9jtfhold lights are being replaced with LEDs. LED is the acronym for which onebdl9df j65 t9h of the following choices?

  05.16: A cylindrical graphite resistor has length L and cross-secti*4a v l1is:qvs3p od6 )sd;v-*lqz wbsonal 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 tb*;vils 3*soq6z-awp:d)v ss d1 q4vlo the old resistivity of the cylindrical resistor?

  98.20: Wire I and wirt3hjovj2 r96+9 )ml x2o jsnzqe II are made of the same material. Wire II has twice the diameter and x 9 6looh22z)3 jv9nmj j+tsrqtwice the length of I. If I has resistance R, II has resistance

  99.31: Wire Y is made of the4o -zek2 p. u5-sguqxf same material but has twice the diameter and half the length of wire Xueo --gxk 4p5s .qz2uf. 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 radiuc,*zw(bf b ildby. 25hs 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(* h,2bbiyz b5f. wdcl because of this process?

  07.27: A junior Thomas Edison wants to make a brighter light bulb. He dr fk6(43qzxa1ay y5(ulnhi8q ecides to modify the filament. How should the filament of a lightbulb be modified in order toy h (luqn8r qf(i6a4ax5y3zk1 make the lightbulb produce more light at a given voltage?

  16.07: Three cylindrical resistr1; 1nn7ydyxi ors are made of the same material. The length and radius of each resis7y1n ixnd r;y1tor 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 nrx.7um;o19j5 s8 n dedsq1w bbattery 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 resistance of this arrangement of r9m sjd8w n;7dxebqun 5.1o s1four resistors?

  95.35: The voltmeter in the * 07uoki1bwh jaccompanying circuit diagram has internal resistance 10.0 kW and the ammet* j7i1hk0b ouwer has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most nearly:

  97.37: Consider the compound circuit shown to the righ.su 6a9mnk y,*b; s(n wwyyv9zt. The three bulbs 1, 2, andwbw9.nzn; vy 69ssaumy,yk *( 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.

  99.30: Given the simple electrical circuit at the righnmo+(tvu82dr )z2uklbb 0 gm7t. If the current in all three resistors is equal, which of the following statements must22mb(ndotrgu 7vz+u08blm k) be true?

  99.37: The diagram at right repress*zl eybjcky)x2q) dc- np294 ents a simple electric circuit composed of 5 identical light bulbs and 2 f9*zy-p4sc 2)yl xbdckenjq )2 lashlight cells. Which bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the followi,--lbej1:k/m- 7pvaz i/8jcherek bjng statements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are pjj kb e7c/1l-ez-r8i-:,/khav bemjhave equal resistances?

  17.29: Two lightbulbs X andY are comsly *-pwm*:fax7- pvnnected 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 what is obse*sly7*- pvxwmp af- m:rved?

  06.34: How many coulombs will pass through rpv34sacf+;:v g kje)) kjv(lthe identified resistor in 5 seconds once the circuit wv + a4l:)gkkvej pf;s(v)cjr3as closed?

  00.23: If all of the resistors in the follow6v ck+bny1 d4ring simple circuit have the same rv y +61nr4kbcdesistance, which would dissipate the greatest power?

  98.34: In the accompanying circuit diagram, the current through the 6.0 Ωe6dcr.i a-:d0 qbzd8z resistor is 1..qd :d z86cr i0ba-dze0 A. What is the power supply voltage V?

  97.27: Three resistors R1yld4e2juiz2 7vy9b+ v , R2, and R3 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 6ubdj y497l+y2iv evz 2.0 W of power. What is the voltage across R3?

  99.40: Three different resistors+o61.4ycq3t7ru5y:wv7 lr9 js6jxb l x ptqdy R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, y+y ujx7:7dxc trq s.5 tol1 ljq 6v493bwyrp6R2 = 4Ω, and R3 dissipates 6 W. What is the current in R3?

  99.13: A heating coil is rated 1200 watts and 120 volts. Whsa5v 8nz71bjxwd4 jr8l /bo0f at is the maximum value of the current under these conditionz5n a 8sl0/1bwj4o 8bx r7dfjvs?

  99.23: What is the resistance of a 60 watt lightbulb desqh 3bsek(wxfu pq/8 *it1sn: gu6nd:6igned to operate at 120 volt pi*qn/36h1ug(ns : eu6 8tkxsdfwqb :s?

  03.09: How much current flows through a 4 ohm resistor that g2oh/8j7 syn,; dussr is dissipating 36 watts ,osrjdnus/yg8 27; hs of power?

  05.21: A household iron used to press clothes is marked "12nhvs 3n2gp gkw+f 1-, qcmec2, 0ju2el0 volt, 600 watt.” In normal use, the current in it i njgps ewm21ehfu+,lc,c 320qgv2nk-s

  01.05: Which of the following resisp3 x98k5wy dcf5 afhm6tances could NOT be produced by a circuit containing md9cxhfk 56 8wfap3 y5only three identical 6Ω resistors?

  94.37: You are given three 1.0 Ω resistors. Which of the following equivalenljf-*z3qqg y; bhbo*-q .al 2lt resist2qly-b qlag h*b3jf- lo;.q* zances CANNOT be produced using all three resistors?

  02.06: Three resistors of different values can be connected together in diff.k /4lb qk8lqta +imh4erent configurations. If all three resistors are used in a circuit, how many different values of lla+h/ b.tkk i84qm4qtotal resistance can be produced?

  97.35: When a single resistor is connected to a battery, a total power P is dtt n 4cac+ **n*kyd-xwissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected in t* w-4 tc+nnykac*d*x series using the same battery? Assume the internal resistance of the battery is zero.

  96.16: When two resistorssiw(t bu(bu /(, having resistance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the follw b(/( buits(uowing statements about the resistances is correct?

  02.46: A hotplate is designed such that it has a resistf)fkep y. nc i4khr)7 pc.n6l (r(m9lxance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to 6n7kf.h9pyi.rrl) kfx (c) l(epm c 4nwarm 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 dissipatingj.q*mbvkd 6d 07ojb th ,qp75x 36 wattm07 hbv65d 7oqtjx* pjb. k,dqs of power?

  01.24: An electric heater drawsgl1adm sw3t21okvv8z80zk9w 13 amperes of current when connected to 120 volts. If the price of evz3 vko1z9m81d0lswkw2 ta8 glectricity 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 tovst-c /td+51(sklm1 )we tsqf keep a 100W lightbulb lit continuously for 1 year at a ratet/w)ms5s k+v1 t 1(-stcfdleq of $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A through a l 8 0ryg9jwyu4xa3fbyhki7y0 6ightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best reyfjiry8ugay 0yk7 wh09 4 x63bpresents the resistance of the lightbulb?

  01.10: Each member of a family0wm0 l 1r -bkol+lzjv/ of six owns a computer rated at 500 watts in a 120 V circuit. If all computers blw+jv0o1z-m kl0/ lr 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?

  03.16: A 9-volt battery is t v b32r21kofqqs(h.iconnected to four resistors to form a simple circuit as shown to the hb1t.q f2q2kirv(3 osright.
How would the current through the 2 ohm resistor compare to the current through the 4 ohm resistor?

  03.17: A 9-volt batt;1b jl f6pi5o fh2iv7(0ckw sor(cj(slq(k1k ery is connected to four resistors to form a simple circuit sfo6p5wk 27kiboc(1j 0fv jl h1kl; (( c(qsiras shown to the right.
What would be the potential at point B with respect to point C in the above circuit?

  02.21: An ideal battery98p2; o a 6r./w3zyjh g3ilc8heosyim, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in p26/oie388y.wyic z;mg h h9sorlja 3the 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 *xb w4w)k8npuammeter, a switch and three resistors are connected as shown. With the s)pwkb n4uw8x* witch 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?

  02.23: An ideal battery, an ideal ammeter, a switch and three resi;,ond 6:wacc0 jxbp;974rlemi o n6nrstors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amxde,;04; rnojbmiccla67w :p rnn 9 o6peres.
When the switch is closed, what would be the current in the circuit?

  12.14: For the circuit shownp1z) i o2io/c. ugves- to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, an) zs iuvig1-.eop oc/2d all three resistors have identical resistance R.

  09.07: The equivalenw7ti: 4zejc s)t resistance of the circuit shown to the right with resisciej z4w) s7:ttances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below shows five identical resistors connected in a combi x8)2muk*z/ l6t ggdnfnation series and parallel8z x6d2fgktunl / )g*m circuit to a voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram belo0sj0 zgnlxa8. 04ttv) e7fcfcw shows five identical resistors connected in a combination serieslev s.0 7atgn)xj 80tc czf0f4 and parallel circuit to a voltage source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit+ks 9wjaloz ,4o- we6xwmw)/d diagram, all of the bulbs are identical. Which bulb will be the brightestwk6 )4 x9 o+zojwmw/elwa ds,-?

  02.21: An ideal batte a(u adwhe*2cj2e22bkry, an ideal ammeter, a switch and three resistors are connected as shown. With the switj b*ahkc 2w22 duea(e2ch 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 switch and ,rk3c89 v 9,bjf ijhvfthree resistors are connected as shown. With the switch open as shown in the diagram t ,,399rbjjkif8vf v hche ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?

  02.23: An ideal battery, an ivl94ql ew2qjk: jl-lgje 59r:deal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2j r qg-9jlq4e l:le9l5:vwk j2.0 amperes.
When the switch is closed, what would be the current in the circuit?