16.09: In the circuit shown, an electric current existsc31l5l;9 za- sc hmv byf)da6f 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 resistora;h-mzba s956d) ffly1 cc3l v?

  98.06: When any four resistors are connected in parallel, the_________eachvdudm wkg9q;vh2 -bu7.kj9 250xak8bkxk n h. resistor is the same. dvm.akk9kx58-wv ; kxuh9b d0n2hk u.qgb7j2

  06.33: A current through the thin filament wire of a pz3426c ueaecb688uaqh 8v yrlightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain m avb3p4ur8q6 c h6uy8e 2aezc8uch cooler. This happens because

  13.08: Some standard household lights are being req34 my+mqm8d j+ka gn3placed with LEDs. LED is the acronym for which one4n8g3mqdy+a 3kqj +m m of the following choices?

  05.16: A cylindrical graphite resistor has length L a: glo)k)gcha yux/c3u so:,opz 1j l :gsay:+*nd cross-sectional area A. It is to be p:h ,jygo)s:sc3:oyagp az oc 1l)g +k:/xu*ul laced 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 to the old resistivity of the cylindrical resistor?

  98.20: Wire I and wire II are made of thka*hjsb*iw4 i95rwr 8e same material. Wire II has twice the diameter and twice the length of I. If I has as hb9w *ii8w*r 54jkrresistance R, II has resistance

  99.31: Wire Y is made of the same material but has twice the diameter and half t+n/dbe asqoj,m8xg y;tix)ygw-8 *0phe length of wire X. If wire X has a resistance of R then wire Y would 8 gqxngtdmj*ye,oi;x+ wp0 )-s8y/bahave a resistance of

  03.23: A cylindrical resistor has length L and rs 7in(,8ln z 9eyk9fv3 d;rz2mpoi-x radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens dp 3krl8iz- ( ,n sfve; irnx972ymz9oto the resistance of this material because of this process?

  07.27: A junior Thomas Edison wants to make a brighter light blx 1fr4( zodt l+;gwu4ulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more ligxoud4f rz;w4t(+g1l lht at a given voltage?

  16.07: Three cylindrical resis:kq7+ g6(yc bn- gi5y1 abqhmktors are made of the same material. The length and radius of each resistor is:mk(yk g gc qhy:a-7b6i5+bq1n
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 cos pkn59v(sumly o2g; ;nnected to 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.” What is the equivalent resistance of this arrk5;vousgm s2l 9;(ny pangement of four resistors?

  95.35: The voltmeter in the accompanying circuit diagram has internal glgstbb; vjg7c;7 /-5zowo l,resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most n bw-,/7ljz ; tog57ggcl;vbos early:

  97.37: Consider the compound circuit sl av ,)tez r2n-gxcm5dikb1tv * +*j3hhown to the right. The three bulbs 1, 2, and 3 - representedcrg,v*t mvka3bx+lhni ze1 -2 d5j *)t 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 right. If the current in all w o:ruq(6/sj s:(svvx three resistors is equal, which of the following statements musru (:q 6s(wovjsvsx/:t be true?

  99.37: The diagram at right,m/zyfcvn)oe5(hx s9 a2 v8ad represents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or 9(cos ,av8h2vzmney / f)5 dxabulbs)
would you expect to be the brightest?

  00.03: Which of the following statements is NOT true concerning the simp2iy,agm bj r,0le circuit shown where res ,0gjmabi2y,ristors R1, R2 and R3 are have equal resistances?

  17.29: Two lightbulbs X andY are connylh8 xux.0x *hected 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 th0ulxyxh8x .h*e same battery, which one of the following choices best represents what is observed?

  06.34: How many coulombs will pass through the identified res/ydqms8/9z5-jgx k zgistor in 5 seconds once the cizjzm89-ks5/ d q/xg ygrcuit was closed?

  00.23: If all of the resistors in the following simple circuit h6q-k 9twvzl)o wvu8w+l:tl -s0t ud6cave the same resistance, whichc k6tl)wvo+u-w 60su tvq9z:-wd lt 8l would dissipate the greatest power?

  98.34: In the accompanying circuit dis(zi x.p9 v1cjagram, the current through the 6.0 Ω resistor is 1.0 A. What is the pow v(9c .j1zpsxier supply voltage V?

  97.27: Three resistors R1, R2, and R3 are connect kpu8r h-j h5:4ooo/,z i4uozted in series to a battery. Suppose R1 carrie pkoou5oo:z jh4-zuhr t,4 i/8s 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 andR3 are+m(ba (pc j)nm connected in parallel to a battery. Suppose R1 has 2V acrossm)j( n +c(abpm it, R2 = 4Ω, 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 thd4f (:ze ile4me maximum value of the current under these conditiz de(e:4m4fi lons?

  99.23: What is the resistance of a 60 watt lightbulb designed to operate at 120 k /a )n;r+(9tqpj3dzaatd )4mb+po rb b tdk+ mdbo(qaaar;p/ t)rpz4)nj9+3 volts?

  03.09: How much current flows through app/2rw4cn+qnbaix h2z26zm( rp 0v9j 4 ohm resistor that is dissipating 36 wattsnzxjp 9+qrbvr22ipphc 0aw4/nz (6 m2 of power?

  05.21: A household iron used to press clothes is marked "120 o.-aos/e+2 j y3p ftqxkl:-xqvolt, 600 watt.” In normal use, the pf:. yk+ls-xq/ooqtx ej2 -3acurrent in it is

  01.05: Which of the following resistances could ko4e.hko)mo6l h9.8rj qbq jt+ 6 2ukrNOT be produced by a circuit containing only three identical 6Ω resist 9ru)qro b6ho+q j6ktke.j.8 o4khml 2ors?

  94.37: You are given three 1.0 Ω resistors. Which of the followingr6wq(g jqz-; ylmy5r 3 equivalent resistances CANNOT be produced using all three q65zgw (jl;-rqy 3rmyresistors?

  02.06: Three resistors of diff)e1)1tntazsx4fy.ah): 0x rernf bb )v5oh(jerent values can be connected together in different conf br.ht41e 1:hersx) jv5) atza)(yo0bnfxf)n igurations. If all three resistors are used in a circuit, how many different values of total resistance can be produced?

  97.35: When a single resistor is conne7/70agk qo)oqjtyo 9*l amcg0cted to a battery, a total power P is dissipatedo 7) 0jt0o9gkmgayq/lq7*aco 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 resistoe.wtg2eu w6dx.-t mx .rs, having resistance R1 and R2, are connected in parallel, the equivalent res. tgue d2xxw.6. e-wmtistance of the combination is 5Ω . Which of the following statements about the resistances is correct?

  02.46: A hotplate is designed suchqlb/3 iiw +kk4 that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.4b4iw k q/k3l+i5 kg of water from $15^{\circ}C$ to$85^{\circ}C$?

  03.09: How much current flows through a 4 ohm resistor that is dis1qi p-7fv e.vssipating 36 watts of power?f-17ivqep s.v

  01.24: An electric heater draws 13 ampa w bfclg3x q7;+n(3hderes of current when connected to 120 volts. If the price of ef3h+;dcwq x 7bganl( 3lectricity 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 lightbulx17m*xj oqn.lxf sz2tn);, swpw4ua.b lit continuously for 1 year at a raxu q.znxs;tlwjw*.p1 n2x,4 ) s fom7ate of $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A thy wnhz78 2.g 4okf+bcrrough a lightbulb results in a power of 24.0 W associated with the bulb. Which on n7hogf r.2 +wkcz84bye of the following choices best represents the resistance of the lightbulb?

  01.10: Each member of a famild-id 5 xs1qqf7x2q1eky 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 a 20 ampere fuse, what is the maximum number of the computers can be operating axk517xe d21 f- sdiqqqt the sametime?

  03.16: A 9-volt battery is connected to four resistors to form a simple cir:ts s9m 911wrq- fs-hqnurke9cuit as show9ktr enr9u qs1m- ws1-:sq9fh n to 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 to four resistors to form a simple ci:t4db* jd k 7fczzj:d3rcuit as shown to the rf:z:dtb47dczdkj * 3 jight.
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 d)xg9q7qv l46 x: 7kkouwp1jlo(bs 1iswitch and three resistors are connected as shown. Witg4vu1 xoq k6p lbjs l1)i9x:q dw7o7k(h 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 ideal ammeter,ea)e +zyv;p z5xd5q mmnjh ,:7 a switch and three resistors are connected as shown. With the switch open as shown in the diagram t zen+y)z qaem7h;vj:5px5m ,dhe 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 switn7kw/ . s:d/h6c9lkv n3krd ylch and three resistors are connected as sh y9d:nvh .7k/ k3wc/6nlskldrown. 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 t yj:3 /ycg*pc6g-aba yhe right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resi-3gay : acgb*c/yp j6ystance, and all three resistors have identical resistance R.

  09.07: The equivalent resistance of the circuit shown to the right with res9i8 ;*tyi3pl h mvuz0tistantvp 0tml39iz; hiy8u *ces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below shows five identical resistors connectefmg/am wzs16u xu7;s/d in a combination series s msuzgw7mf1au//6x; and parallel circuit to a voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows five c 8 6qqrvj jc+86nve(a9e1tjjidentical resistors connected in a combination series and paralle vj6+qan 81eve9qj (6jjcrc8t l circuit to a voltage source.
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit diagram, all of the buneu;sndf 8 ,l,lbs are identical. Which bulb will be the b f8un, sn,ed;lrightest?

  02.21: An ideal batteryw54ha af3fdec0dgl mea )t08;d;dx0q, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diaghf5;d;d qlt 8 x 0e4maaew)adfg3 0dc0ram 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 idealnv (p co-f4f(m ammeter, a switch and three resistors are connected as shoc-fp n(m of4(vwn. With 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 ide9+ y*ealjb74f9o: ;natwk l .8ts ffeaal ammeter, a switch and three resistors are connected as shown. With the switch open as shownf74b*+o;nf 9e9sayf .tlakt8:jale w in the diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?