16.09: In the circuit shown, an electric current exi(xz 09n5x; wf9dra erbsts in the metal resistor connected to the battery. Which one of the followin na(w9rxbx0 f rd;5ez9g 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 park.(g0bhe.x:eu3 tvow allel, the_________each resistor is the og0.t.bke:3x e hvuw(same.

  06.33: A current through the thin filament wire of a ligh+;h/j8uop,q 3vdg ebocc m9d0tbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cool ,+cqc/8 op euo0b3dgm; vjh9der. This happens because

  13.08: Some standard household lights are being repj+dk5d flnf 202nh,as laced with LEDs. LED is the acronym for which one of the following choices?ah k n,dnj0l2ff 52d+s

  05.16: A cylindrical graphite resistor has length L and cross-swdm:2/xwl ,gc:35h jtx8orfsectional area A. It is to be placed into a circuit, but it first must be cut g2o fs:t8xh:cxj/5,dr l3mwwin 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 materialx0 lg0u*s1 oil. Wire II has twice the diameter and twice the length of I. If I has resistance 01xso u*il g0lR, II has resistance

  99.31: Wire Y is made of the same material but has twice the diafehwho2do0p. +: wp(wq4 *qr.engw ,qmeter and half the length of wire X. If.2owpq0h, +:owqw4 ed qgfw(pnhe r *. wire X has a resistance of R then wire Y would have a resistance of

  03.23: A cylindricalr)hpz7 1 5znmm resistor has length L and radius 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 because o) z 7zm5nhm1prf this process?

  07.27: A junior Thomas Edison wants to make a ga hc;m) u fih9l0)2cmbrighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbf0gm9m2;)uia) hcc lhulb produce more light at a given voltage?

  16.07: Three cylindrical resistors are made of the same materi jfesyq wt8)6 31hvr9lomf r-;al. The length and radim-v ;lj8ehs1ftqw6o f3r )y9 rus 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:8u:guuv8pi m6(+b i1f 75zybh vb gkj of resistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connect :p+gy bzi7gf16 ivbkju:m( 5vu8ub8h ed 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 accompanyi8 vx8l lte5f1zce/-bang circuit diagram has internal resistance 10.0 kW and the a 8e a5e/bt1xvzl-f8lcmmeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most nearly:

  97.37: Consider the compound i5 q4(,jgt7 zj ln-jpvlq1q0u circuit shown to the right. The three bulbs 1, 2, and p(7jnzqqj5 l140vgu-q,itjl3 - 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 simpl 3u/vsubhz87 ;w 1y.4nogohcpe electrical circuit at the right. If the current in all three resistors is eqw1z 7 vo/4yuhg3hopuc;n8b . sual, which of the following statements must be true?

  99.37: The diagram at right represents a simple ele w / )ujg6.:llszir29q/aihfuctric circuit composed of 5 identical light bulbs and 2 fz/ih: /9luqgf2u.s 6)irwajllashlight cells. Which bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the following statementsix240dc 4bpqxi.vdl ) is NOT true concerning the simple circuit shown where resistors R1, R2 anpdx4c2 b i)id4.0lqvxd R3 are have equal resistances?

  17.29: Two lightbulbs X andY are connected in series to a battery. Bulb X is brimpuimz2( 6 y+hghter 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 zmpm2(y+6h iu choices best represents what is observed?

  06.34: How many coulombs will pass through thejh,jttyv*vdn -ljr;4puv 7 16 identified resistor in 5 sj6vpunv 14j;h y*,d-vttr 7ljeconds once the circuit was closed?

  00.23: If all of the;9sb/hqzn3 zz resistors in the following simple circuit have the same resistance, which would dissipate the grbz; z3/zqs9hn eatest power?

  98.34: In the accompanying ci:nvzgbtpwnjyj tx3 247b 72a2kbv,2w- f0 xg qrcuit diagram, the current through the 6.0 Ω resistor btjq,pw7axvv2j 2024- gb3zkynn:tgf7wb 2 x is 1.0 A. What is the power supply voltage V?

  97.27: Three resistors R1, R2, and R3 are connected in seriesn;5bpw +jk y1y to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 Wjbk + w;nyy51p of power. What is the voltage across R3?

  99.40: Three different resistors R1, R2 andR3 are connected in paralle bohporg l3-fo mt08()l to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the culmor3 -tgb) 8oof 0(hprrent in R3?

  99.13: A heating coil is rated 1200 watts and 120 voltssuf er) *o,*ta jn82lz2k c/ck. What is the maximum value of the current under 22 crfzetk*,nls k/*j)uo8c athese conditions?

  99.23: What is the resistance of a 60 watt lightbulb designed to operate at 12usr*/s t( tv7z0 volts?zttu(r sv7 */s

  03.09: How much current flows through a 4 ohm resistor5 + pv;gxbmhkb;-aa. u that is dissipating 36 watts of power.bam-v ; +xh; pk5ugab?

  05.21: A household iron used to press clothes is marked "120 volt,gv+7sw- g3uk u 600 watt.” In normal use+kg7 u3v-w sug, the current in it is

  01.05: Which of the following resistances could NOT be produced by a bg 1y0oeqw7cr3 gu:h)circuit containing only three i hew7r:30yu1)bqgcogdentical 6Ω resistors?

  94.37: You are given three 1.0 Ω resistors. Which of the following equivalei6if u(infx 67z0kw6.vl).lhb(l h zsnt resistances CANNOT be produced ufvh0lwz i ) 6.(l7ih bzxl6k. i6ns(ufsing all three resistors?

  02.06: Three resistors of different values can be . u /l,+)zdppt+n7c*ptskoloconnected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistancpz.sn/ to k+d p+u)t7co*,plle can be produced?

  97.35: When a single resistor is connected to jcs 2uti7iv3c84q 8svk kk: 8na battery, a total 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 7nikqc: 8v8sjsi4t3 k82 vuk csame battery? Assume the internal resistance of the battery is zero.

  96.16: When two resistors, having resistance R1 and R2, are conne+ qk2icbx5rm6vqfmm ;.uo5 gk)g9da+cted in parallel, the equivalent resistance of the bdx;9iauo vmf5r62qqg.kmmc ) kg + 5+combination is 5Ω . Which of the following statements about the resistances is correct?

  02.46: A hotplate is designed such that it has a r8f 8jiy8uxax*g te)q 6esistance of 12Ω when operating at 120 volts.*u6eytgj88iqfa8) xx What is the minimum 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 througxf3,v4p d7xv m(ufdv+r mzy8.h a 4 ohm resistor that is dissipating 36 watts of pow73.p,d m xzx8vryv+fmf dvu4(er?

  01.24: An electric heater draws 13 amperes of current when connee2x3lwh6p4 /6r rnueq j+60jw1k yvfdcted to 120 volts. If the price of d wrj xe13+k wl40 /fquh26r6n6 pyjevelectricity is $0.10/kWh, what would be the approximate cost of running the heater for 8 hours?

  08.05 Approximately how much wo(lieiyqh sds 245z: f lfl25+vuld it cost to keep a 100W lightbulb lit continuously5 h q:2(4 e5+z liysl2sdvlfif for 1 year at a rate of $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A throughn- bn m x;z;o6k6aoz3g a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represa- n6z3bkn; ;gomx zo6ents the resistance of the lightbulb?

  01.10: Each member of a family :pxgqwi6b p+ dofr 7mm/+n.t* of six owns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by qgo+. fi+pm:wmd*bt7 nr6xp/ 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 resistors to form a simple circu4hjwp:d m*l96 5u;,a fzgyxglit as shown to the rightwlm uflz,g5jdgh 6a;y : 4px*9.
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 avn,i6j.ykqhfq8 hiv24; nn 3kzg, r6to four resistors to form a simple circuit as shown to the right 8knj4i;6fi .gr3qz2vny,q6 khh, n va.
What would be the potential at point B with respect to point C in the above circuit?

  02.21: An ideal battery, an ideal3tbk*s ap qs a* vicl83 x)us7gebgrb.,)y2z) ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammetbir3qtsu e.g k)l28,*b)x 3s*pa yzc7)gb vs aer 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 t*rz 4q ft8q+oeapjl v*0ve -g6hree resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 6glr8tjv0 avf-qz e *p4+ o*eqamperes.
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 resistors armia yd41unm/+e connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperey+1mi/um 4an ds.
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 resistance? j.9u+rpz;zr*o h wvy 4 Assume that all wires 9*r jyzhow.;4 zvru+pare ideal, the battery has no internal resistance, and all three resistors have identical resistance R.

  09.07: The equivalent resistance of the circuit shown to the right wixfwndii r9b(o8 ay,)ekk/ q-0 th resistanc 0ixdon/ kbiqa(fr, y-9 wk)e8es $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram beloxb ucawl3bb;; idx6g55a4w;z w shows five identical resistors connected in a combination series and parallel circuit to a voltage sobx wi;ubala3zw;6x b d55g;c4urce.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows five identical resistors conn ):w5qyciwq w2ected in a combination series and parallel circuit to a voltwwiqwc52 yq) :age source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit diagram, all of-c5pdmh*ai i2a2/ voy the bulbs are identical. Which bulb will be the -ma2 ciy 52*dpo av/hibrightest?

  02.21: An ideal battery, an ideal ammeter, a switch and three resistors are connzrt5tlo 2 )ckxc)cuj 6*w9pp :ected as shown. With the switch open as shown in thepw2kc:x*pcur)co6 9jt 5)t zl 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 swi afvaq46l9c k.tch and three resistors are connected as shown. With the switch open as shown in the diagraqlvc6. fk9a4am 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 anjtqwjvk8q 4bji(1k /cn9wb2u0op8 4sd three resistors are connected as shown. With the switch open as shown in tsb/jk4jqb(9icvow t 2 k1nj40 p8 wuq8he diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?