16.09: In the circuit shown, an el0 -uflkvowg0(ectric current exists in the metal resistor connected to the battery. Whic o v0gw(flu-k0h 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?

  98.06: When any four resistors are connected in parallel, the____e7puzy8j s*b6ze8- ie(bfws)0d-g vv _____each resistor is the sambpz ee*b dsz( 8i)v8jwgu6s fy-7 -v0ee.

  06.33: A current through the thin filament wire of a lightbulbg )r1 rrv1ak fnih3.o3scky gw.3(p+e-+ rcun causes the filament to become white hot, while the 3n kw1. agn3f) i eprsr3rk .++hcv- (oyr1ugclarger wires connected to the lightbulb remain much cooler. This happens because

  13.08: Some standard household lights are being replaced with Lgv6 ,xy/-k*lv64- 9lqxzuv9 ylg ujucEDs. LED is the acronym for which one of the following choice-4,y9 66lvcj 9kxx u*qgglv/yv- uulzs?

  05.16: A cylindrical graphite resistor has length L and cross-sectional area il./tw e2x:d cA. It is to be placed into a circuit ix d/le2.ctw:, 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?

  98.20: Wire I and wi91c8m zjm f c*kuj;v.wre II are made of the same material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has wkmv.9mz ;1 ju8fcj*c resistance

  99.31: Wire Y is made of the same material but has twice the diametoj 6,nvp+zf71yqn ) eper and half the length of nnfeq 1vz, +pjp 7)yo6wire X. If wire X has a resistance of R then wire Y would have a resistance of

  03.23: A cylindrical rkt 1oq i-a9d8besistor has length L and radius r. This piece of material is then drawn so that it is a cya9tod- i1qkb8linder 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 light bulb. He decides tqq. v)l 16 mhe(7wpprbo modify the bqlp6er)phvw.m 1 7q (filament. How 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 resistors are made nm(ii:v;h)av (e bwm3 of the same material. The length and radius of each revw hn:( ) im;3m(aviebsistor 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 toy8h3bs,ph h x- 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.” Whabhyhhxs ,8-p3t is the equivalent resistance of this arrangement of four resistors?

  95.35: The voltmeter yjvmwbp- 6f, ,*jd0lgin the accompanying 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 voltmeter readj wm- 6 0,gjf,vdby*lping is most nearly:

  97.37: Consider the compounbg:hfkq ; :(n)c6ksmlaw7-uy ) mi1nwd circuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors s l 1)qch: nfw:7kmynk6;gbu) ma w(-iin 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 +e- ov)ayc-cv current in all three resistors) c+-ya-ov vec is equal, which of the following statements must be true?

  99.37: The diagram at right represents a simple elekmj/f jum /w-:ctric circuit composed of 5 identical ligk/mj-f/ :wmu jht bulbs and 2 flashlight cells. Which bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the 4mdfcm h18c-e54yc evfollowing statements is NOT true concerning the simple circuit shown where resistor-c 5efm448m v1echdycs R1, R2 and R3 are have equal resistances?

  17.29: Two lightbulbs X andY are connected iz ny,m9vodh70 n 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 batt97ohnmdv , y0zery, which one of the following choices best represents what is observed?

  06.34: How many coulombs will pass throui:-nde)bd 1vi gh the identified resistor in 5 seconds once the circuit was cloie )di1b -n:vdsed?

  00.23: If all of the res*o6x(rw w0pvfi(d 3t cistors in the following simple circuit have the same restvwc d6foi0* ( xpr3w(istance, which would dissipate the greatest power?

  98.34: In the accompanying circuit diagramb --h4 - qfurrikalh03, the current through the 6.0 Ω resistor is 1.0 A. What is the power supply voltage--luh3qr4-0ah fk ibr V?

  97.27: Three resistors R1, R2, and R3 are:6p. qnmstij/5qt,rxzaf-g9 l2 yia3 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 nyiqitpts52ra x6l/q ag.zmf9,j-: 3across R3?

  99.40: Three different resistors R1, R2 anycaye;o 20ps m,-oh v.dR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω,pm;c02yya,se o-ho. v and R3 dissipates 6 W. What is the current in R3?

  99.13: A heating coil is rated 1200 watts and 120 volts. What is the maxim57cxvswu djxt : .0g-gum valu-vxx05 w. jg7gtucs:de of the current under these conditions?

  99.23: What is the resistance of a 60 watt u:hi(mu ew) ,eh:,mbolightbulb designed to operate at 120 volts?wom,bu)he:eum(: ,i h

  03.09: How much current flows through a 4 ohm resistor that is5xl+gbks4qr uf p86x9 dissipating 36 watts of po6lp sbx49k8x+r5gqu f wer?

  05.21: A household iron used to press clothes is marked "120 vol e)a+v 0y9xyro mhno+uj:d f.;t, 600 watt.” In normal use, the cujx +om.o eu r9+;y)yahdf:nv0rrent in it is

  01.05: Which of the following resistances could NOT be produced by a c 56a1r)qnx 7y yisyxoek(.8u yircuit containing only ty y) (iroy1u q ex8asyk567x.nhree identical 6Ω resistors?

  94.37: You are given three 1.0 qt/rc f8t7 yf5Ω resistors. Which of the following equivalent resistances CANNOT be p/ y tftcf7q85rroduced using all three resistors?

  02.06: Three resistors of different vali0 -;a(oxwlnff1zr; a ues can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance anzoia1(xw 0 ff-; rl;can be produced?

  97.35: When a single resistor is connected to a battery, a total powe:bx pc-+wb uz nn;m -p4tpd16lr P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected in series using tpb wn-z6ulxdp- p+41tmn c:;bhe same battery? Assume the internal resistance of the battery is zero.

  96.16: When two resistors, having resistancee oh7yk+ t(g : -uxjoi(gt*w8dnt uc0. R1 and R2, are connected in parallel, the eec n i.jwd70 th+t:t*o-8 uy( gougkx(quivalent resistance of the combination is 5Ω . Which of the following statements about the resistances is correct?

  02.46: A hotplate is designed such that it has a resi.x.0fqxs 2u ygstance of 12Ω when operating at 120 volts. What is the minimusyu g0.2x.xfqm amount of time that it would take to warm 0.45 kg of water from $15^{\circ}C$ to$85^{\circ}C$?

  03.09: How much current flows througqvk0ix0 ebh,n- wt2a 5h a 4 ohm resistor that is dissipating 36 watts of p e0k2iqn0 ,hawxv -bt5ower?

  01.24: An electric heater draws 13 amperes of current whenqsq w9,/ bju3t connected to 120 volts. If the pb9/ 3q jutsqw,rice of electricity 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 keep a 100W l4, ;fjns y6btrightbulb lit continuously for 1 year at a ; j,r4fb6tsy nrate of $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A through a lightbum7+k a30bpoj lsbq00 6mt7hdflb results in a power of 24.0 W associated with the bulb. Which one of 6abfb+3 mmt p lsdjk7q00h7o0 the following choices best represents the resistance of the lightbulb?

  01.10: Each member of a family of six owns a computer rated at 500vnw3h ii7/c 4jpg)9cj fz y*7t watts 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 of the computers can be operating at the sametim/vny7hz4) 9 igtwi3cp 7jj* cfe?

  03.16: A 9-volt battery is connected to four resistors to form a simple circ6kkm .gt 9lo;hf:6elauit as shown to the raf9;km.6g: k6hle lt oight.
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 to four resistors .v+asx am.,fk l+n*0 kb+djqcto form a simple circuit as shown to thenakf .+*+ a mcb+sqdvkl0,. jx 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 threi/qz ww-w1vw1 bd5 m0ye resistors are connected as shown. With the zdq 1 w/-wb0yw v1imw5switch 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 battmx t5,i xi.s8tery, an ideal ammeter, a switch and three resistors are connected as shown. With t8 5im,s.ix xtthe 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?

  02.23: An ideal battery, al5.(m ouaxdj;n ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the a l x5(;mjauo.dmmeter 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 right, what is the equivalent resid 2d, nk wm2lhvx4wd/+stance? Assume that all wires are ideal, the ba ,vd4mxwwk 22l+dd hn/ttery has no internal resistance, and all three resistors have identical resistance R.

  09.07: The equivalent resistance of the circuit shown tohf.1jlo2j p0( ghre 3c the right with resf 21.p03 hjocrj heg(listances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below shows five identical resistors conney;ldt(:u7vydn j e51jcted in a combination 1uvdjy(jnt ydl;:57 eseries and parallel circuit to a voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows five iden)u 6yx6s rv5gttical resistors connected in a combinati yu5g xv6s)tr6on series and parallel circuit to a voltage source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit diagram, all of the bulbs are ident5jz*w6 (,jexjor oe1zical. Which bulb will be the brightejez6z o*5wj,jx e(1or st?

  02.21: An ideal battery, an ideal ammeter, a swit6jfg4gxi3;2q8ygm w py8+z t fch and three resistors are connected as shown. With the switch open as shown in the wfp6g;g+8tm 8xijqg z24yf3ydiagram 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 three resistor8vrz-3i,si 6ou dewo:s are connected as shown. s8d i,o:vio-wzu6er 3With 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?

  02.23: An ideal battery, an idea/ ym:av;oqxe/l ammeter, a switch and three resistors are connected as shown. With the//o;yevx :qa m 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?