16.09: In the circuit shown, an electric curr e/i4d g2h7okyent exists in the metal resistor connected to the b7godh/ kiye42attery. 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 resistor?

  98.06: When any four resistors are connected in parallel, thers7l83qrs8 nw_________each resistor lrs 8w n87r3sqis the same.

  06.33: A current through the thin filament wir6g,oy h1 t 4ogoqejb31/rhj t;e of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens be3j goyto ,1 q 4rbhjhg1o/et;6cause

  13.08: Some standard household lights are being replaced with LE2t 5ph55up mzdDs. LED is the acronym for which one of the uppz5dmh 552t following choices?

  05.16: A cylindrical graphite resistor has length L and ca5** s6kr d)sggxrq8v2 w+twmross-sectional area A. It is to be placed into a circuit, but it first must be cut in half so tgss)d wtv2xqk6 rgw8a5**mr +hat 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 material. Wire II has twis 0s3ldw6o *xvce the diameter and twice the lengt wxdl30*ss6 ovh of I. If I has resistance R, II has resistance

  99.31: Wire Y is mad72jnelv k9x1h ye4l nn*pvk*0e of the same material but has twice the diameter and half th*0 lv n1y9njh 2 een4vxkkpl*7e length of wire X. If wire X has a resistance of R then wire Y would have a resistance of

  03.23: A cylindrical resistodg+0sp28lm1hm kkx 8 /ckmmw; r has length L and radius r. This piece of material isg;xm81 lkkcm k8dm+h/ m0p w2s then drawn so that it is a cylinder 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 de.rnxg6x vn )6 s7plo9kx y6x6acides to mo.kn xo)66yranl7 xg p69 sxv6xdify the 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 cylindrl 2 (ze 3 h2nwcse05crt+vx1zhical resistors are made of the same material. The length and radius of each res +ctzrlhc (sx 03e nwev12z52histor 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 connecs50 l *:c0ics;f2 uu eh0pvwfzted to a battery in the fe0fsv pu f2z0c uwi5slch0;:*ollowing 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 four resistors?

  95.35: The voltmeter in the accompanying circuit biri)b bw49ul9 j+h7l diagram has internal resistance 10.0 kW and rb9w7h b)ljlu49b +iithe ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most nearly:

  97.37: Consider the compound circld,zx+d) d so3uit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in +xdl dzo)s3,dthe 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 currentylmhk 02 9r.ph in all three resistors is equal, which of the following statement klm9hhry20 .ps must be true?

  99.37: The diagram at right represents a si xrevl:0r+w71 bry6p wz9jw-imple electric circuit composed of 5 identical light bulbs and 2 flap+ zvrr6rx1wi w y9jeb -07l:wshlight cells. Which bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the following statements is NOT true concerning the simple cit.1i9xhymu9egewae.36/ a x ircuit shown wherey3mee .6xx/gii twahu 9a 1e9. resistors R1, R2 and R3 are have equal resistances?

  17.29: Two lightbulbs X andY are conneccb2 cd5ksqpm1/emc 4 8ted in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X ac1b /kqm2 cp5dm48c sendY 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 pass through the identifiedd, 9:3y7qbfh ( lopxzg resistor in 5 seconds o, h9 :(gq7yzxbopfl3dnce the circuit was closed?

  00.23: If all of the resistors in the following simple circuit hay 99;y7ywfoau ve the same wu 9a7yyy9;o fresistance, which would dissipate the greatest power?

  98.34: In the accompanying circuit diagram, t q0sb *ua.ge*-e-o7w qr)io rdhe current through the 6.0 Ω resistor is 1.0 A. What is the power sup0uiwe dq7*- b)or ra g.qe-*osply voltage V?

  97.27: Three resistorsiu3*m8-srw n9iyx 0tl R1, R2, and R3 are connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistu mx0ly w3n-rtiis8*9 ance of 3.0Ω, and R3 dissipates 6.0 W of power. What is the voltage across R3?

  99.40: Three different resistors R1, R2 andR3 are connecw ml05rqli-hk. 4,z e tmb7/ioted in parallel to a battery. Suppose R1 has 2V across i4ol/ki70bizrw ,qeh.m - 5tlmt, R2 = 4Ω, and R3 dissipates 6 W. What is the current in R3?

  99.13: A heating coil is). qoz9a+v+hdti2 bq v b 7ju-tmeeah;k6p /o+ rated 1200 watts and 120 volts. What is the maximum value of the curr d) mvbp/ otv+o;9uabq+jhqka +he-7.z ti26eent under these conditions?

  99.23: What is the resistae3ov faz82g y 1ah*ka:nce of a 60 watt lightbulb designed to operate at 120 vo*va2yf okeh1:gz8a 3alts?

  03.09: How much current flows through a 4 ohm resist9n85e8u /a vgzf9tx.j7rh5;kf thsq lh6sf j 3or that is dissipating 36 watts of 65tj;hfx5uajk se.s8ftrh839 9hv7n g/ ql zfpower?

  05.21: A household iron used to press clothes is marked "120 volt, 600 w1d(fl nv ./ofp56kpxbatt.” Invlpnp(k fx1o 5 /6f.bd normal use, the current in it is

  01.05: Which of the following resistances could NOT be produced bun nsu7+e*+ zpy a circuit containing only three identical 6Ω r+u 7+*zsnunpeesistors?

  94.37: You are given three 1.6ngp 1 kc*tw:/wdfmons1wz v 4q08;jq0 Ω resistors. Which of the following equivalent resistances CANNOT be p n *wwwk o;41gnq 1m jp8fdc0qv:tz/6sroduced using all three resistors?

  02.06: Three resistors of different values can be connected together in differe+t )okgyb3dtwe*g8h8 nt configurations. If all three resistors are used in a circuit, how many different tybe t8)ko+hgd* w83g values of total resistance can be produced?

  97.35: When a single resistor is connected to a battery, a total powe .yn u7fxrfck(.8f fa1r P is dissipa 178fryfk (cxnaf.uf.ted 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 resistance of the battery is zero.

  96.16: When two resistors, havin ip5m7fga2i*- ui:eu;whbtzx*vs((r bd2z ; i g resistance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements aboubu :7v ;(z u2f*5p(wiraisdbx-ze2;ihi *gmtt the resistances is correct?

  02.46: A hotplate is designed such that it has bx 9avh is uqd.71sw;3a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it w3xsvq1w7bus .a; i9 dhould 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 dissipatingqs zou71 -t(ix 36 watts of power?qos tzxu7-1( i

  01.24: An electric heater draws 13 amperes of current when connected to 12 p/5u/ (w4*zjif9rpjic ck.js0 volts. If tw 9pz4u(5 *i.j fpj/csi/rkj che price of electricity is $0.10/kWh, what would be the approximate cost of running the heater for 8 hours?

  08.05 Approximately how much wouldda2osq4v ux1+9zpwq) 3lzuj 8 it cost to keep a 100W lightbulb lit continuously for 1 year at a ratxosj 4lz+azwu89 p312dqu) q ve of $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A through a lightbulb results in nur6f +) 5w/jvqojr /ba power of 24.0 W associated with the bulb. Whicjj6 qb rnwv/5fo/ )ur+h one of the following choices best represents the resistance of the lightbulb?

  01.10: Each member of a family of six owns a computer rated at 500 73bw mwvehfd*htp 13-r5 u:ovwatts in a 120 V circuit. If all computers are pu-dow7 :bt5prv3f *vh1 w3hme lugged 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 isbx eyl36fn5;whs/ q3rbo)q x8 connected to four resistors to form a simple circuit as shown to thxbyh n3le swxr/o;q6q3fb8 )5 e 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 connrwnm+7ukxq76(y f s-bected to four resistors to form a simple circuit as shown to the right.fu 7+nwmk- ysb x76r(q
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 swisf +9p on7,2(xvbowdyse x40y5 us ps3tch and three resistors are connected as shown. With the switch open as shown in the diagram9e,s4n fb5o2 sy0dospwx7yv+ux3 sp( 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 resistors are qiuat6 s +fw,x7rc13abb3:w fconnected as shown. With the switch open as shown in the diagf :r33 q f6wt7,+wi baxb1saucram 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 ;4irh 40be .idruu;2 ay4wol zswitch and three resistors are connected a2huy4 0 irazle.; r;4 iuwbod4s shown. With 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 right, whatzah(3j o ljsv(nb/t6xmi 28j9 is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistaji n38 9 mvabs(jl6 xo2jt/z(hnce, and all three resistors have identical resistance R.

  09.07: The equivalent 8mupce: 4m z+nresistance of the circuit shown to the right with res:ecn pu48 m+mzistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below shows five identical resistors connected in a cbtb+68v*cm lcombination series and pa bv8mc6t*+bc lrallel circuit to a voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows five identical resistors connected in a y688 h qweql9 kmje )m8:c uszr96aam.combination series and parallel circuit to a voltagc69arz 8 kemswj8698 a:yqmmue.q) lhe source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit diagram, all of 3h0, wtv q;bo rnq,g2wthe bulbs are identical. Which bulb will be th2vn;3r0o,bqg,ht ww qe brightest?

  02.21: An ideal battery, a;-+ic w +a z/fkk)attln ideal ammeter, a switch and three resistors are connected as shown. With the sw) kf a-wtkl/;c+i za+titch 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 three resistors are hapm*4c*,h e.huw1b a25qt-6 t iraurconnected as shown. With the switch open as shown uc.,ha 1 -rhu6*2tip b54 am wtrqhea*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, anyenv0tkv6 ik95 r 7r,t ideal ammeter, a switch and three resistors are connected aser6k0yn r9i,v t57tkv shown. With 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?