A device that produces elecu lc xsgk5+bzw(--+ 5wzj-1/vki voy4 fev5gwtricity by transforming chemical energy into electrical enscb w5 wgf--o4z -ez1i +/wv yuk( +x5jkvlvg5ergy is called a

  A car battery

  The total amount of charge that passes through a wire's full cross(4 ;slt.esfxz section at any point per unit of time is res;te(x .l4z sfferred to as

  The direction of convention current is taken to be the directi/ m wz; v7fsscq(;bva63q6bccon that

  A coulomb per second is the s7o;rj2z(u +za /e rhiwame as

  Car batteries are rated in "amp-hours." This is ar- e -u22gieiq measure of their

  The resistance of a wire is definw0xfrt(p 6f1oa;vj wd : ,zw)xed as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wiresi--b;rg* uobn .h; ts:tc7 lm is

  The resistivity of a wire dggd,jw;lda;io,u6 *v epends on

  Which conducting material has the lowest ; kiuk7 k91c gchh8a.m5u( gbbresistivity value?

  Consider two copper wires. One has twice the length of the other. Hoon x6+1y0 8zi b):mw+l6ubcgyqzq6 bow do the resistivities of these two wires compare?1y y+z)iu bg6c8 wb+06mq qo nxb6l:zo

  Consider two copper wires. One has twice the length of the other. How do snns) ,rk(v 4gthe resistances of th,gsn r)s vkn4(ese two wires compare?

  Consider two copper wires. One has twice the crounwy5b qg 3,ot: ;r8unss-sectional area of the other. How do the resistanu83 r,gwt y5q;bn u:onces of these two wires compare?

  Consider two copper wires. One ji,1*svj vzi6 b,n oe qgx8l)3has twice the length and twice the cross-sectional area of the other1i i36g vnv,qj8s,*zjlb)xeo . How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what facton45xhgy ah(kjlbea :lm 9 a442r does the resistance change b2(l a4hxm:54kl4j gyna9ahe?

  How much more resistance does a 1.0 cm diam vbsd(:5n 8mk kqpn92y19kka oeter rod have compared to a 2.0 cm diameter rod of the same leyq12 k5knn s(98bkkop9mvd a:ngth and made of the same material?

  The resistivity of most c u3qd4 d,,.c6tccgoxqfdeu )c qwj;t 1 p50q)bommon metals

  Negative temperature coefficients of reslz t2-f-ecjb 6icu2e,va,i k lue:)-h istivity

  What is 1 W equivalent toe9nsw2p q mw(+?

  A kilowatt-hour is equivalenhh *dm3ot4;o qt to

  If the resistance in a constant voltage circuit is doubled, the powezy(wo2) iezqrf0,h 9v im8ns1r dissipated by thayz( 1fm2orzsi 8 v ehn09)qwi,t circuit will

  If the voltage across a circuit oik25wzki2 gl vu*es9ik +zy ;,f constant resistance is doubled, the power dissipated ;iz2zl 95kei+v*wku2,gsiyk by that circuit will

  If the resistance in a circuit with constante,pli5)kbd1w b y r1v3 current flowing is doubled, the power dissipated by tyw)ikr bv15 de l,b13phat circuit will

  If the current flowing through a circuit of constant resistance is do*n+q mdeq*ye* ubled, the power dissipated e **d+m*yen qqby that circuit will

  During a power demand, the voltage output is reduced b8qmf obg15+pg y 5.0%. By what percentage is the power on a resistor afmo85+1 gqpbgffected?

  A current that is sinusoidal with respect to time is referred 8 gd:nnqj2 nva9o u-g,p(ge5 rto as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twice :xe r)lqkv1ljap:mho9 (3 q2u the diameter of the other. The ratio of the drift 9oule31 kxr:qjl ( ) vh:a2mpqvelocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low tnys lair/rdikh8.0.u y*b r7;rfa 98 jemperatures are refe0 i8nbsd alh /u*y .87.rjfiarkrr ;y9rred to as

  What current is flowing if 0.67 C of charge pass a poin3o b7mp ;(zbttt in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. Wh /g8zwoywe8r h-.w*omat is the average cu/ oyoh-e*mz gw88w.rwrrent?

  How much charge must pass by a point in 10 s for the j6j79usm 78mu1v+ax6ehuc cqcurrent to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flow:z biw3h.:+e:/x dgo vkbgje.ing if $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of current, has been left on for 10 min. y3jyj2af 72lnvsd sjki05g/ 7What is the net numyj ksinls7ag2dj fj7yv23 5/ 0ber of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of(* g ;+cuyu:hr xz4wbj silver on a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of c xu+wubgz;yh*j4( r:silver is 108.)

  What potential difference is required to cause 4.00 A to flow)i7dy1 v 7jrkt through a resistance of 330 W? dt ri7yj)k17v

  What is the voltage across a 5.0-W resistor if the current throu,)t *vojv3 yw nj2duv9gh it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curj skttwru(.sqz47gddzg1 d2d04 4 3-dioa b:e rent will flow?

  A light bulb operatin 0hb m+r(ism*bblx2 -jg at 110 V draws 1.40 A of current. What is its resistancemj*l-x r0bhm(b +ib s2?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow throubhy3f6ig0l p .gh the3p6bi gh fyl.0 wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The z9ee), rzq6.rl dh tkf(/x)jq resistivity of cfk/).z ,zrth e9qrjqex l )6(dopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diamet d g;pv-z/twb(v;u2brer and 45 m long, if the resistivit;;(gu pwdvtbv 2zrb/- y is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper r q ,u1/lyqm- 8pckvq3atv45t wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivij-2.q zqhknn,ty $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.040:m: pm9qhrpg. ohms. What is its resistivity?

  Calculate the current through /jh6 yxz(towd;j 8zf p +ex2*ca 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V jjpet(+z8 wyo6 / x2d *;xhfczbattery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0 83q/ s1jfw9 5bnik; kek( vvcecm. What is the voltage drop along its length when it carries 4000 A? (The re5;ev9 s k f38bvkwk/icj e1(nqsistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mm and a resistivit ,l 4,prrkc mezdq*e13s4r ds-y of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire (resistivid:k9iubdkx9x8 e1/hw ty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance of-srd8/af t1 (inoi/l j $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefficient of resistivity o.c vx+(ap1hh4din eo6f platinum is $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to qmqj0)g4ukxrdot ++9 ( yryp4determine the melting point of indium. The resistancdt+r kxyu ( 4q0jo9p4mgqry)+e of the platinum wire is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing throug*8lfh0drw9ok *qkn1 wh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What22 b/mw(kyvke current will it draw?

  A 150-W light bulb running on 110 V draws e26edvk ekc 7oi )g7j-how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used ;xhx1kf8y pe56 4ooja r75bbg in a 120-V circf6kr1h 5jbo7og5 8p;4x xabeyuit?

  A toaster is rated 800 W at 120 V8oc9 c(icjim ,. What is the resistance of its heating element c9im,co8j(ci ?

  A 200-W resistor is rat)7zjmq9d lw.+ub.n aded at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r(p2hnu 7k+e ;u 9ojhn1dteh y)ated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used a8t nc*cxaed,(8k + oa6aqk s8pt 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its r(ch8d5 u:w3kpte qgwe 7dis)8esistance?

  A 25-W soldering iron runs on 110 V. What is its resik 0-y gzzjz4h.stance?

  How much does it cost to operate a 25-W soldering iron for 8.0mbqzoc+ 37hyrz*2/ h8+ux mbe hours, if energy m z+*hox+2/qbec8z 7r y3mhbucosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 ho/ 6)gry -t0s grrlqsh3urs?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat energ:c+n k3rgqrnz8 5qz+m1nd,uby izr cd,mqnq8+k+ n3z5g1n r:u bs produced?

  A battery is rated at 12 V and 160 A-h. How mrgqydz,8c7 4 )ta),wdq 0cz iouch energy does the battery store?aot,dq 4z yz0ci7cw ) ,rqgd)8

  How much energy does a 25-W soldering iron use inu2cyq2dbf7j . 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assumi m:u ,*tcqb;lb8ikj5 nng the power company chqc8ikb j :;*lmn,5btuarges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours y0,33ppsio xmper day. If electricity costs 10 cents per kWh, how mox3 3ppm,y 0siuch does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central ovvywcb k-0k9 sg;/v9 air-conditioning unit for 9skvvvy; 0wc 9k-/bg o2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates heat1 gyr pk 3r0yjk,l;e-6v *phej at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) -,pkevjkp 30ry;hl*j gery6 1 What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows through wx;y:3krg8 bpp6tnvte )m 6q 1$8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs e*hf e (w-q-uh$1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work ay f.ztms3wg x1m)8p e*t the rate of 2.0 hp has 60% efficiency. How much current does it draw from z p.3wgtys)mf*ex18 ma 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms cu ,ict oi/o0tl)huz; x(rrent flows through this dev/uo0o( tixtc ;l)z,i hice?

  A 500-W device is connected to a 120-V ac pow0ei o,w qjm*c,i)z w3der source. What peak current flows throu cjwm),o,0izq* wdie3gh this device?

  A 500-W device is connectedc x4or-bqb; ylnr+:pz)6 p6d n to a 120-V ac power source. What is the peak voltage across trno4 r;-)y qxdl6:zppbn+6c bhis device?

  The diameter of a copper wire is 0.081 inch. The maximum safe curre6-bztw.3kc(pc8rj:apu irbk ug e,6 4nt it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter:g jb.ai4-p,zwcr(3r ep bucku k t866 of copper is $8.5 \times 10^{22}$.)