16.09: In the circuit shown, an electric 3k29eszpibie)z- e1h current exists in the metal resistor connected to the battery. Which one ee1s 9zzek-3hibip2 ) 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 dq bcoe9lq90b3a8-( ;gn(o t k7hpe imparallel, the_________each resistor is the samkd( -qec eobt0qpig 9l7b89;oa (mh n3e.

  06.33: A current through the thinjgy+ zii xs,.5 ota2o- filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happy-igaztisj5. 2 oxo, +ens because

  13.08: Some standard honmy( c(ome- 3-lzt6j mm)7 rfkusehold lights are being replaced with LEDs. LED is the a( eo(7fm6k) 3jnc- rm -mzmytlcronym for which one of the following choices?

  05.16: A cylindrical graphite resistor has length L and cross-sectional a9do9ydt m+( r spg1h0vrea 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 the ratio of the new resistivity to the old resistivity of the cylindrical d +rpmd9 ghs1v0o(y9t resistor?

  98.20: Wire I and wire II are made of the same matewoa qqm6 81r0or0 qb9erial. Wire II has twice the diameter and twice the length of 0r eo61mwbqa90 roqq8I. If I has resistance R, II has resistance

  99.31: Wire Y is made of the same material but has twice the diameter and halfxr3 kay u5ob,, the length of wire X. If wire X has a resista5uar y3 box,k,nce of R then wire Y would have a resistance of

  03.23: A cylindrical resistor has length L a3wcwp zl8o w-2nd radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happe-wow8w2czp l 3ns to the resistance of this material because of this process?

  07.27: A junior Thomas E/:eu)g;(o cssm 5ff mydison wants to make a brighter light bulb. He decides to modify the filament. How should the filamen(; ugfmf )c:eo5y/msst of a lightbulb be modified in order to make the lightbulb produce more light at a given voltage?

  16.07: Three cylindrical resiy;0rzha+bf q,wd -l -eaum e:(stors are made of the same material. The length and radius of eachz:-rha+ (yq e0 -wufeld;amb , 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 of resistance R, are connected to a batter;65q w tskeby; a.zsm1y 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 arrange;s1 ; tmzqy6a sb.ew5kment of four resistors?

  95.35: The voltmeter in the accompanying circuit y 5 qcyry2egp-w* zs9(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 reading is myr9ezp5 2yw qygc*(-s ost nearly:

  97.37: Consider the compound circuit sho;3bo3c9k )yu: satzh twn to the right. The three bulbs 1, 2, and 3 - represent syo hat3tkbu;3c):z9ed 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 h,(/5efr8l2 icwdpzp three resistors is equal, which pz frihce(l2/,8 w5 pdof the following statements must be true?

  99.37: The diagram at right represents a simple electric circuit composedfn,g0ai /d*im4m g s4g of 5 identical light bulbs and 2 flashlight cells. Which bulb ( g/gd i0g m,4*naf4ismor bulbs)
would you expect to be the brightest?

  00.03: Which of the folloaop-ffa pp ;l ,/l7ji9wing statements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have equa a,9f ll-ppij;a7opf/l resistances?

  17.29: Two lightbulbs X andY are connected in series to a batesh eo dtc eet. aqx s*j93-b7o8:g2*btery. 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 ba 8qh97 d 2.oe3beo-ts*ct: *jge sexbattery, which one of the following choices best represents what is observed?

  06.34: How many coulombs will pass through ;vy4qpvw6 8rc the identified resistor in c4vp;rv6w qy85 seconds once the circuit was closed?

  00.23: If all of the resistors in the following simple circuit have 4y15 l8zj p j6xnd ixb3xwuph5jf2-j;uq4)crthe same resistance, which would dissipate the greatyzupx)jjb8j 6f4n 54q hrx wuij-l15 c p2;d3xest power?

  98.34: In the accompanying circuit diagram, the c 1 arxae4vuxck;s;, e5urrent through the 6.0 Ω resistor is 1.0 A. What is the xxc1a;;ek5 ra ,v ues4power supply voltage V?

  97.27: Three resisto1( kv x( 0cvjtv:2hhnlrs R1, R2, and R3 are connected in series to a battery. Suppose R1 carries a current of 2.0v((hk 20nhjc:vlxv1t 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 pay8rl,k n4f vz6e 9lq8brallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the cur6kylnbv,98l4 r zefq8rent in R3?

  99.13: A heating coil is rated 1200 watts and aix hmrg8h5ps (a :-qnws64 r(120 volts. What is the maximum value qhmr4 (8apxas5w6( :shi-gn rof the current under these conditions?

  99.23: What is the resistanl kv9k3 ebty5n m.e t9,wa12ugce of a 60 watt lightbulb designed to operate at 120 voltsgek 5u.9kvtl 9, 23enbt1wm ya?

  03.09: How much current flows through a 4 ohm r vl dv n7drsne02( n7,fnz+co1esistor that is dissipating 36 wattsn l7sr(21 o+v7zn efn,cn d0vd of power?

  05.21: A household irgxs:)vg6 qgz n89d xz.on used to press clothes is marked "120 volt, 600 watt.” In normal use, the current i8sv 9zdn) g x.x6gg:qzn it is

  01.05: Which of the following resistances could NOT be produced by a fqif)/pj6to0(q 1h6r pied:o circuit containing only three ide)di q(qr 6th joff:p1 e/6i0opntical 6Ω resistors?

  94.37: You are given three 1.0 Ω resistors. Which of the following equivalenu*h y rgpvv *6y3;(*xyssqq. occ/wq;t resistances CANNOT be proq.yy3 yqu gqxsosv ;c*(/*hv*;6rwp cduced using all three resistors?

  02.06: Three resistors of dirm ,p:l9q 5niluiqco47m 1a 8cfferent values can be connected together in different configupu ncm1 ia 9m8:qr,5l c7io4lqrations. 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 connected tody4b: q 9fiks.1,ajpo 6osk/qs5p* oh a battery, a total power P is dissipatedp/*59b6 ,o kay: q fososjs .k4ph1dqi 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, having resistance R1 and R2, are connected in pcz w8 spgfo:+amsv0ebgo/7 tj; m 590garallel, the eq:b0 +gog f5c9/msazeo87gvp smw;j 0tuivalent 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 resistance of 14smq: xj2psr52Ω when operating at 120 volts. What is the minimum amount of time that it would take to warmj42pm:sx s5 rq 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 dihk2:pcf a8s+xq,.: zg zk /apassipating 36 watqkphg.x:+k , fpa:8 z /saa2czts of power?

  01.24: An electric heater draws 13 amperes of current when connected to 120 vthdq/5h 5bsxd3y7 j8volts. If the price o sxthh/7 d 583bqvjdy5f 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 lf u)xe .v*5toiightbulb lit continuously for 1 year*x. v5ei )fout at a rate of $0.10/(kW.hr) ?

  12.09: A constant curre1hy2b.0-xo*fbsckjs)hk sv (nt of 4.00 A through a lightbulb results in a power of 24.0 W*0syh.)1(b ksk2jo bvxfs hc- associated with the bulb. Which 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 500dqs rv7pmnfs/9: dj1 6 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by as 7/6:djmnf spd rq1v9 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 resi4xj:,zp0 fdstq/b3,jx(fw wwstors to form a simple circuit as p:t,/wbdw4xqj3, (xwjf zf 0 sshown 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 ivz1gudgqko8i-k /3 6 p )e2inps connected to four resistors to form a simple circuit as ip 8zgvog k-ei /2q)un361 dkpshown 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 resistors are p3 8;yg +lwzfsconnected as shown. With the switch open as shown in the diag;+sy f3g8p zwlram 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 batt7 p)) ljqkkwh1ery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram t1w)jk q)l7h pkhe 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,lx) w:;.vxv ymc/fg -q a switch and three resistors are connected as shown. With the switch ope) -xl vqfw;xg.vm :/cyn 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, what ieui d,5o, etp) hm-r7is the equivalent resistance? Assume that all wires are ideal, theph7uerod- i)t5iem,, 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 witxeg) p qie0a-p lvd ,4z d://(4ownpunh resistanc pw:d (enp4l i,g/ )v04pzq/ -oexnuades $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is

  04.20: The diagram belx ucaw8 83iat3si*nfta p-x*k :2 f3qkow shows five identical resistors connected in a combination series and para:t3aa s8ncu 8 ik2fpa3-kxtxi3* fw*qllel circuit to a voltage source.
Through which resistor(s) would there be the greatest current?

  04.21: The diagram below s hozb (m4yx:p)hows five identical resistors connected in a combination serie :(ybzm)xp4h os 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,w r prq k:aa*5-9gkgu bulbs are identical. Which bulb will be the bri9 5* a arkp-:g,gkruqwghtest?

  02.21: An ideal battery, fjx4x4( 5j o)x3qo qz*vtsyn/ an ideal ammeter, a switch and three resistors are connected as shown. With thn 5*(xqx3oxvqyzjj4 fso t4/ )e 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 ideawuk3qd t8.5 3uomd,cd l ammeter, a switch and three resistors are connected as sh w,8mtk dq.d3 uo3du5cown. 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 resispt.3ec scy 6q+5pp7 autors are connected as shown. +t5c yq6p7uapepsc .3 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?