16.09: In the circuit shown, an elj9tt/l;s (ty wectric current exists in the metal resistor connected to the battery. Which one of the follow( /y9stwt;ltjing 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 paralleymz6* r5 u 0m2ytv:hymwk5 mk+l, the_________each resistor iswk2ymrymvz05 tm*u:ym +6 hk5 the same.

  06.33: A current through thgp v642cj u1g2 xlq.04wzam xve thin filament wire of a lightbulb causes the filament to become white hot, while theml j42 6gz14. vuxvw02xqg pca larger wires connected to the lightbulb remain much cooler. This happens because

  13.08: Some standard household lights are being ry:x4 s )2:pn md1xnep1mw la 4g5zj:w-t+aafseplaced with LEDs. LED is the acronym for which one of the following choeg1:: l1 m-5an4xzp+s2w4anwjsfatym:dx p)ices?

  05.16: A cylindrical grapmx lr)yb9:z9 shite resistor has length L and cross-sectional 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 t9rsmzx:y lb9)he ratio of the new resistivity to the old resistivity of the cylindrical resistor?

  98.20: Wire I and wire II are made cuch;s9 d/; 8x c5cuesof the same material. Wire II has twice the diameter and twice thsc cd;e c859huux; cs/e length of I. If I has resistance R, II has resistance

  99.31: Wire Y is made of the same material but has twice the diameter and g(49yntzm zyv1krh9nn md9/5half the length of wire X. If wire X has a resistance of R then wire Y wozgmy9(d4 5h1n9mk9v zty rnn /uld have a resistance of

  03.23: A cylindrical resistor has length L and radius r. This piece of materia(eqnif(p)juk-l 6q y.1qn e0c l is then drawn so that it is a cylinder with new length 2L. What happens to the resistaee.6qc1 uq 0iqj -((pkn)yflnnce of this material because of this process?

  07.27: A junior Thomas Edison wants to make.b,2c 3v 76zal lvkdly a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more light at v bzl7.,vy3lkalc6d2 a given voltage?

  16.07: Three cylindrical resistors are made of the same material. The lengtdbo 4o p)j nhk oo-t88(dg5 jsxn*;j*jh and radius of each resistor i;5ohjsn*j(*b8o o-np t gkx8dojdj4)s:
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 battery :o3tt -q bq/gdin the following way: “Two resistors are connected in series. This combination of two resistors is connectedq tgtq3:b/o -d 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 acc0up 7k3qbltjl 60sm*5 ;fimcrompanying circuit diagram has internal resistance 10.0 kW and the ammeterbl5fqu 7* 6i 0rk3mt;lsmp0j c 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 right. The thrxf tp.2z+jir ,ee bulbs 1, 2, and 3 - represented as resistors in the fzrt.pji,x 2+ 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 c):i.cuqwcnuf+nw 4 vdd9v;aln+pgn q 1q147at the right. If the current in all three resistors is equall1dqcw1w)cgvn cn .da4 u4n++v ui9nq ;: fp7q, which of the following statements must be true?

  99.37: The diagram at right reu7caa9u c.oj4ye0 a 6ipresents a simple electric circuit composed of 5 identicaac4796yuj ceaao 0.iul light bulbs and 2 flashlight cells. Which bulb (or bulbs)
would you expect to be the brightest?

  00.03: Which of the following statementsjuz1d4wdy,c d* ,t-a c is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have equala 41zd d,u,dyc *w-ctj resistances?

  17.29: Two lightbulbs X andY are connected in series to a battery. Bul5m)fp,ufs m *oxh2a-8 gs(huob X is brig8gouupms, am sx5(hh 2* f)-fohter 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 observed?

  06.34: How many coulombs will pass through the identifiedo5t qz0esyhga 3+p5 .q resistor in 5 seconds once the circuit was q.zs0h5y5t 3o aeg+pq closed?

  00.23: If all of the resistors in 9zx3eae72 f dd8nxow)the following simple circuit have the same resistanceo7 xad f x8nz92)3ewde, which would dissipate the greatest power?

  98.34: In the accompanying circuit diagram, th/ :n5i3ieivgn ji i-s/e current through the 6.0 Ω resistor is 1.0 A. What is the ni-:/ 3iij esv/gii5npower supply voltage V?

  97.27: Three resistorsx* vr6zo6 6q rj azr6v1uipq02 R1, R2, and R3 are connected in series to a battery. Suppose R1 carries a current1 rzqv iux6jp6602avrzqor6* 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 connected in parallell0m,ouz zi oaqcf+2) vi-)* pj to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 flijo 2-zvpu)i c0z,+q)*ao mW. What is the current in R3?

  99.13: A heating coil is rated 1200 watts and 120 volt)g8vvxa)d)n v,c m5 -vn.qahu58be7jx6gz pts. What is the maximum value of the curre8gjcha )mxxvn8gu )6t,-qp7 vbv dz n a55ve.)nt under these conditions?

  99.23: What is the resistance of a 60 watt lightbulb designka** -y.ld+hypwku+uv4v)ddw qv+o 8ed to operate at 120 volts?8a. d+dqywku -u*+o)dv4*vkphl y+ wv

  03.09: How much current flows through a 4 ohm resistor that is dissipatind k9tox9 id4+lg 36 watts of poltk i9d+4 dx9ower?

  05.21: A household iron used to press clothes i(gs q3al jri,u2;fa6c9dt; kt*g ky+ ss marked "120 volt, 600 watt.” In normal use, c(rs+*ai 9f uyt qg,kd;g;slkj23t6 athe current in it is

  01.05: Which of the following resistances could NOT be produced by a circuo+s vd htaopmj5iz+o);vs ,2tcy9,6v it containing only three identical+ ooo6ds;saytvt jh),vi52,+z mc9vp 6Ω resistors?

  94.37: You are given three 1.0 Ω resistors. Which of the following) e :ss(zc;umr equivalent resistances CANNOT be produced using all ths )(zrec: m;suree resistors?

  02.06: Three resistors of different values can be connected together insdz8mcn wr t:9+k *e6a different configurations. If all three* n+mtdrsea :96kc z8w resistors are used in a circuit, how many different values of total resistance can be produced?

  97.35: When a single resiqz 05bstvo 40bstor is connected to a battery, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connecz b0 tv0bso4q5ted in series using the same battery? Assume the internal resistance of the battery is zero.

  96.16: When two resistors, having resistancqqk8xw0 gyk r4*u e7,ae R1 and R2, are connected in parallel, the equivalent resistance of thxqk,*e a0uwq4yk 78 gre combination is 5Ω . Which of the following statements about the resistances is correct?

  02.46: A hotplate is designed such thu)s /cx5+bc*j ikhdmc6:x u1*5 vsipyat it has a resistance of 12Ω when operating at 120 volts. What is the minimi/* kb*5xyh1)mcs65vip+ cc :xsu dj uum 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 through a 4hpb+-e9 t- yt/lpd wi+ ohm resistor that is dissipating 36 watts oftpwb +hlp9t+di-y/ e- power?

  01.24: An electric heater draws 13 amper 42dda d7peu.9uis6yces of current when connected to 120 volts. If the price of uiu.c ad79 p64 e2ddyselectricity is $0.10/kWh, what would be the approximate cost of running the heater for 8 hours?

  08.05 Approximately how much would it cz.yk.du/qzqt)1bgv.6 c /ido ost to keep a 100W lightbulb lit continuously for 1 year at a rate b/z./v1.ug)q6o . idyczq dtkof $0.10/(kW.hr) ?

  12.09: A constant current of 4.00 A through a lightbulb results inlf ,2id 9d0pdh a power of 24.0 W associated with thel9 pd0dhf,i2d bulb. Which one of the following choices best represents the resistance of the lightbulb?

  01.10: Each member of a fo)*sunwvqili zky x2o-92 n+:amily 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 on )vonw2*2 oi:9i-qz yu+ slxkperating at the sametime?

  03.16: A 9-volt battery is connected to four resistors to form a simplf:p:0(h8t: *5 luf kcbmh5a ihd84 jglivr7j me circuit as shown to the rightmj50h jha:ilgpm 4f d*k lh(b8 :fiu:t8v5rc7.
How would the current through the 2 ohm resistor compare to the current through the 4 ohm resistor?

  03.17: A 9-volt battery p3cmdw / ig5y*u90 efwis connected to four resistors to form a simple circuit as sho305*ywg9d p w uec/imfwn to the 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 three resz7 2t+e4s kiisistors are connected as shown. With the si7s 4sk2 it+ezwitch 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 svs b* 1u05m 5jjxed-6ede,rrdwitch and three resistors are connect*jd re x0e,1der 5-m v6b5sdjued as shown. 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 ideal ammeter, a switch and three r8ic:x ma5v/lsuz wl*q zrcl37 6 y2mi mfz:+3mesistors are connected as shown. With the switch open as shown in the diagram cm:5r*mclqml zi2yl:xz7wfm u/ z833iv6as+ 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 hbas//ye / j)r )gacg;the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors heh bs/ag;aj)cy)r/ g/ave identical resistance R.

  09.07: The equivalent resista28 ukx-fo4*hng6 yzw unce of the circuit shown to the right with resistanceoy826fuku-n *4xg h wzs $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram below shows five identical resistors connected in a combinaep1fo/jz/ u k2tion series ojf1 e k2up/z/and parallel circuit to a voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below shows five identf6100gwaim n5sg m3wjical resistors connected in a combination series and parallel circuit to a voltage source.3m0fns160wj ga g5miw
Which resistor(s) have the greatest rate of energy dissipation?

  07.29: In the circuit dif1p9.o: v ezh 8uogvb;agram, all of the bulbs are identical. Which bulb will be the brightest? ;gb.zo u:f981v oph ve

  02.21: An ideal battery,eg jhz3,a4bj*)i7es8b wjpb 7 an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the sb3b),j webjh z4a 7*e8i7p gjdiagram 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 co8qcm knp 0 wygbb;(:-dnn-8gnw b (; bmcqpy0dk:ected as shown. 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 ideal ammeter, a swivkm bj2 :hwg78 e,tfdxo* jgbad)+2k5tch and three resistors are connected as shown: 8,2tf7dbmk5)ge*dhojg 2k jb+wx va. 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?