A device that produces electric:mhms v*j ,n*pity by transforming chemical energy into electrical en:p** sjh,mmv nergy is called a

  A car battery

  The total amount of charge that passes through a wire's full cross sectio ag,wuj2e/dqwbr7f9(./l ak i n at any point per unit of time i g72de au,wj la.i/w(rf9bq/ks referred to as

  The direction of convention curreb gyj)nt:)g : depr092qt fg1ynt is taken to be the direction that

  A coulomb per second is theivod*mkyv.2o-s6 + b9n2uejy same as

  Car batteries are rated in "amp-hours." This is a measure of t0+oa 6e. jnp/ itdftbc -gwftw5/ )mv4heir

  The resistance of a wire is7:qsz0f kp7yif uu6 hl 2vy(dvxa jm l-;:r)5c defined as

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

  The resistance of a wire isn nxxzoyjd:*63zd*tt z;0ek/

  The resistivity of a :ru.tuiy .w60 psg.g kwire depends on

  Which conducting material has the lowestm.0d0 zc1g /7v+c7lzbufya nk resistivity value?

  Consider two copper wires. One has twice the length of th4 b b .op1ufh(r6f-lm2q(kzuqe other. How do the resistivitiekfbm42.o1h q6r f-p(q u uzl(bs of these two wires compare?

  Consider two copper wires. One has twice yt yie, s7th 7m)5loq7the length of the other. How do the resistances of these two wires q 7i, e ms5y7)oytlht7compare?

  Consider two copper wires. One has twice the crossgvrhcewp vl.38 i,+ :k-sectional area of the other. How do the resistances of these two wires cv8 reic3 pgl.v:,w k+hompare?

  Consider two copper n8e-nkovt0t8puh +:zrcm 9 (gwires. One has twice the length and twice the cross-sectionkt mz:vn h (uc -er0+8n89pgtoal area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubrix zb l:jnrq5oo/cku1. 69b9 led. By what factor does the resi:.oizob69 q 5/1r k9 lxncrujbstance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.05 g2 5h9.xdjntwsxp+ /ytnja0 cm di+t/t5.gp jsdj n xyw0nh5x9a 2ameter rod of the same length and made of the same material?

  The resistivity of most common metalsxkz6kqp9 7,m .jdigd 0+b8cn s

  Negative temperature coefficients of re(abvdy3 (s 1jlsistivity

  What is 1 W equivalent tojvazm4 cws)*vyx +8s.ce0a8z ?

  A kilowatt-hour is equiva ;*d7fn-lt2wjm ieb1 rlent to

  If the resistance in a constant voltage ct3p)o9qa o 4-+iib s ;9sccxvpircuit is doubled, the power dissipated by that circui-opa+b994) c tq;xi iovscp3st will

  If the voltage across a cbzt)k dmpckk z;((a.-ircuit of constant resistance is doubled, the power dis pzk;ba .zkm((-k)t cdsipated by that circuit will

  If the resistance in a circuit with constant current flowing is doubled, the pod4g n bvme5o 6b7il2p/wer dissgnp5 mv76b boi2e4 ld/ipated by that circuit will

  If the current flowinu:jixo2sm-b)n5 nh8x 7ln q7xg through a circuit of constant resistance is doubled, the power dissipated by that cir qlonx hbn5)ns2 7x87uxi:jm-cuit will

  During a power demand, the voltage output is rc h) we3(wlql1p70izi3t th/ keduced by 5.0%. By what percentage is the power on a resistow q10lkwih3t3e7lhcz p(i/t ) r affected?

  A current that is sinusoidal with respect to time is referred tdh/1 0udb9zl.i ra;xto as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twice xi2t pam eaxx1t,x0s8*sr5 j:the diameter of the other. The ratio of the drift velocity in the smaller dia apxxxi12s,je5:m8 a 0st*tx rmeter wire to that in the larger diameter wire is

  Materials in which the resistivity +qn* l1qg 6phnaaf)y:becomes essentially zero at very low temperatures are refern:*a6)qgl apqhf n+1yred to as

  What current is flowing if 0.67 C of- oeu -3lm*zgszd:r1d charge pass a point in 0.30 s?

  A charge of 12 C passes through an electr;;h 2engcb c:q bg5tva(c*q 6aoplating apparatus in 2.0 min. What is the average v ta;:gacqn;c(hb bc625*eq gcurrent?

  How much charge must pass by a point in 10 s for the current to b.8r/- doyewjo (ay1are 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 flowing if g (a84quyu( b.ho4 ungxjsa*, $4.0 \times 10^{16} \; electrons$ 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 drakrn onl+52yx;nl do5 ,ws 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have paso5n+2ol5 rnk, d;ynx lsed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 3e f+ kwf783lix 7gtjnmg of silver on a metal part by using a current of 2.0 A. How long must the current be allowenf3k wl7+ixjfe8gt 73d to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resisnxotbj/m9z ,t( 3;ojogbwi. 2tance /b,oijt ow.92oxzm ;bgj3nt(of 330 W?

  What is the voltage across a 5.0-W resistor if the current throuxqbo-6-, (edx 4o nuizgh it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will fl)/adqy npd wq-wz 0pl..zhpbd.7v.( yow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resisv. bbovwjzmqnpq )2whzp): x* 2(8dn:tancepw8vb z(.x:bpdzo2*j)hvnw2nm : qq )?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow thr9.u3as ti eavi3; otm k9tyd:qe.;-upough the wire .ky3- u ;:etuat. 9qvadt;p3i9mie s oin
1.0 min?

  What is the resistance of 1.0 m copper wirfh7f b17nvn.rj svo60gb( t9oe of diameter 0.40 inch? (The resistivityr fo(bho77ntvj6fv9.sg1n 0 b of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance o7+:wcbic 7ly:d srx2r f a circular rod 1.0 cm in diameter and 45 m long, if the resirsl:w+r cd i7cy72b:x stivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper b+x:ci1gn5w3zu9 i te2 v7d0ptm4 pk nwire (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 wireyyrk)dj ,-qbt c9+ q0k (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measu;/6b; (w 7i,xzjja ju:arhzb kres 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) bmpc)54z zg6o nichrome wire if it is connected to a 12.0-V battery. (The r5mzz46go)pb c esistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectang3zstn 8d-d d83csofrj., zi+f ular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length wi ssdzrj,o+8d- .zt8f3cdf3nhen it carries 4000 A? (The resistivity 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 resistie 6 pi 2w,gvk7qe).w/9 ppcx gcw5ioh)vity 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 (resistivix7lv ; - 4x6/xhdfsemjty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance o ec): gco1y7:i dj-hwqf $18 \Omega$ 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 rrqt:*gzc*7ld *e* z p llgy19gesistivity of 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 determine the melting point of indium. The resistanc+gpfhset/ ,o4e of the gpt o /,efh4+splatinum 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 throu c58kt-qqd +w phm,z1rz g9m*pgh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it dra7vl)p0 cc3k bfig* rkhq /d(e*w?

  A 150-W light bulb rkmck 1ha: d- z m7tfq)8k*uxw0unning on 110 V draws how much current?

  What is the nominal resistance of a 1cnsbi d 3m;)*s00-W light bulb designed to be used in a 120-V circui;smbn) * i3sdct?

  A toaster is rated 800 W at 120 V. What is the resistance of its heatingzyx1) d 6hf0ru elemenzu)r0yh 1dx f6t?

  A 200-W resistor is rated axp9glbam;h34 t $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratedzr 3),l .ciwa.0uiqgp5ro o.w3gp ;gn at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulyt.oayp c*+y7y, wpjd2 1jdj- b. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, wh,tt5h-z-c 0em+u x qctat is its resistance?

  A 25-W soldering iron r sw:lfo3r,mc e/ :tab3t (-xepuns on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron formyjq 1mxol*f-6r89v:7e lkj f 8.0 hours, if energy fk:e yf*8lmq9j ovj 71 lm6r-xcosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8uog,mf/e ,qs( .0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hwjr0 xx8w.tg)ours. How much heat energy is prowg x8)tr.xw0j duced?

  A battery is rated at 12 V an0w *qt0f+un ynfw f*4nd 160 A-h. How much energy does the battery store?*+0nqtw*n 4fnuwy f 0f

  How much energy does a 2i 5zyu4xp2p)g 5-W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power compan:(:n:w.i xdy ;wz awsly charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cos::xww. liza:dsn; w y(t to operate the bulb.

  A 400-W computer (computer pvz s; udu,oi)7lus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to)vdu, ;zi su7o run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central air-c6hrae4z( )pn* mc: wpdonditioning unit for 2.0 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.n(wcpa)p4: erhz6d m *0 cents per kWh?

  The heating element in an electn2xm n0bhn j/- pb0b4yric drier operates on 240 V and generates heat 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.)4h-ynpjnnbb2 0 bx 0/m What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throughwlve m6j,.)a g7k0u31mibqn x $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs p (1.si;ycj xsh*(d5 4ay rsvv$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 at ta ajrxa+s7eh6w* m4i,,,qpuihe rate of 2.0 hp has 60% efficiency. How much current does,,w,m p a6iea7uaqi+*4hsjr x it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V /8nnm;n+v s 8,kjitr gac power source. What rms current flows through ,r t k n8/gin;v8mj+snthis device?

  A 500-W device is connected to a 120-V ac power:4g jxc9kow -d3n l896mw azo7oz3bk r source. What peak current flows through this dev6-d :79koz 4ljzw9gc3o8 abkxwor 3mnice?

  A 500-W device is connected to auzch2 ,h)kvwun- y,*w 120-V ac power source. What is the peak voltage across this devi) kw,uu*vychz n,-hw2ce?

  The diameter of a copper wire is 0.081 inch. The maximum safe current0tni/dd 7 r3je it can carry (in order to prevent fire danger in jr3/n70ed di tbuilding construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)