A device that produces electricity by transforming chemical energy into electric8*4wi-mu reqb al ener4wm 8 q*bie-urgy is called a

  A car battery

  The total amount of charge that passes through a wire's full cross vmjj:ov+:a*h7 6aro psection at any porhm:jv+v o*o 7: pa6ajint per unit of time is referred to as

  The direction of convention current is taken to be the direction thah(21hj e24wief d -ghct

  A coulomb per second is thetkry /eg2j gk ,)qxkcbl ,d)20 same as

  Car batteries are rated in "amp-hours." This is be/rltfy 0suh(7 *d63ia qhd u,h+y u3a measure of their

  The resistance of a wire 8c(bqnx 8+ 7 6p4xjbm hv4nxahis defined as

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

  The resistance of a s+5;0dlyr *ikg1pl.w v u0wnvwire is

  The resistivity of a wire depenjlge)x(aqh;4q m7l ;4j5dt oads on

  Which conducting material has the lowest resistivity lqi,omb t0s) 80uz1wn value?

  Consider two copper wires. Onevjw0:bh j ne41 has twice the length of the other. How do the resistivities of these two wires compar1e h0j nbv:wj4e?

  Consider two copper wires. One has twice the length of the other. How do the l(emf)61wccg w :usjdb36 4df resistances of thes) c6bdjgm43dlef: (w ucf61wse two wires compare?

  Consider two copper wires. One hax i 1vsm,es/xrlrvrb07lc6;/s twice the cross-sectional area of the other. How do the resist /rllx0xc6 7m1,bsvri/ rvs ;eances of these two wires compare?

  Consider two copper wires. One has twi zu:y ;;s uh9epzv+c6bce the length and twice the cross-sectional area of the up6;z bu;v:s 9hz+ ecyother. How do the resistances of these two wires compare?

  The length of a wire is doubled andn45xn 5* hl.tylkyy,u the radius is doubled. By what factor does the resistance chang ly ,nt5yu*y .klx4n5he?

  How much more resistance does a 1.0 cm diameter rod have compared t3errr0e 7 0xpjnw6ck hh (n6c7o a 2.0 cm diameter rod of the same length and made of the same m0knne3hr( c0eprw76cjh6 rx7 aterial?

  The resistivity of most c)83/elhft try myf( 2mommon metals

  Negative temperature2,awhjk7c9h u coefficients of resistivity

  What is 1 W equivalen4yzsmla;k k ,0ahv2 e;t to?

  A kilowatt-hour is equiva3m;dun0oy8h alent to

  If the resistance in a constant voltage circuit is doubled, the power diguz:c- e3 er/fssipated by that circuit willcr3/fz :guee-

  If the voltage across a circuit of constant resistance is dod*pny 7kf*;ydp*r 2 foubled, the power dissipated by that circonff7p*dy d;*y2pr* kuit will

  If the resistance in a circuit with constant current flods q7q693 u sqholwq;eq65r5zwing is doubled, the power dissipated by that circuit wil 3wr9 sh q5qq65qsdl6ueqz7o; l

  If the current flowing through a circuit of constant resistance is 5 do01pvhxi(a oc7 pm4p,,tnrdoubled, the power dissipated by that circ, ia o4r(mp1d, nptpxvhc 5o07uit will

  During a power demand, thya--0w86su4itqu w +s4tjexhe voltage output is reduced by 5.0%. By what percentage is the power on a i4-y 6+txu8es sjqw wu h0a-4tresistor affected?

  A current that is sinusoidal with respect to time is referre((x ,scmakweete)e,sfc+0y w a 5x o-vnk7w.5d to as

  Consider two copper wires each carrying a curr am,r5lcu y9w: cbn*t9ent of 3.0 A. One wire has twice the diameter of the other. The ratio of ycu5tba:lc 9mwr,*9 n the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very jb-d (lb3rk pn8 9po5hlow temperatures are refer-b5(3 hp bjl8n9rpodk red to as

  What current is flowing if 0.67 C of charge pass a px6l g9tkd 4w,aoint in 0.30 s?

  A charge of 12 C passes through an electroplabhmxo(+m d 00 cpz0j-rting apparatus in 2.0 min. What is t0pxr 0(zmoj-hbdc+ 0 mhe average current?

  How much charge must pass by a point in 10 s for thp37vkg/a4xk-6 y;mk3aiks ae e current 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 flownz ;d0wgkzs :*57ga diing 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 mp+ld8. w 44h vmx3dmfzin. What is the net number of electrons that havl .84m3hx+w fmp4dd zve passed through the coffee maker?

  In an electroplating w x6brs l1k0(mprocess, it is desired to deposit 40 mg of 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 silvs w(1rbkxm 6l0er? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A tewza bf exa*)w,,n m22o flow through a resistanz baa)2em xe2w*w n,,fce of 330 W?

  What is the voltage across a 5.0-W resistor if the cuwmg0moq*/goms9- ut; rrent through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What currenz2cigpg6 k3elp s,/ ,at will flow?

  A light bulb operating at 11u,)tgut,qel 1pbpc/ 8p hr i6w4v) q+m0 V draws 1.40 A of current. What is its resistance?pi1tgcwh)+,burml4p)8 u / 6e q,ptqv

  A 12-V battery is connected to a 100-W resvh/ re*fn6n o xt n/;k.hv52),l iyagtistor. How many electrons flow throughox;v/k h6,l2y /a.vngfr ie)nt5 h *nt the wire in
1.0 min?

  What is the resistance of 1.0 m spgzc:d(xelo( ,smvvz2 v+ xp 9-60p+c 4pyrtcopper wire of diameter 0.40 inch? (The resistivityxgv+o sd+ps0cz9r:m (p 4z6-vvl e, t(cppxy2 of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, ia-f)q,pqx -p bf the resistp,)aq--qb xp fivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (rw/rk6 8qrwp3y u4u r3lesistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (reski09g- g,wha f /1yl f0ge-s3lry,ggaistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ohms. What is its resistiviab4(lgs 9v 1erty?

  Calculate the current through a 10.0-m long 22 gauge (the2,n/7cqocuen e) ucl5 radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (Thc nue )7o,2ulc5/nceqe 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 2b0n1i) co6;u5bjk kpsap ttry)a c+,2.0 cm. What is the voltage drop along its length whe;tut0)ckbsb aan,co r p i 6512p+)kyjn 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 b3 z,pzy c7 6fq6l+9rwhw xqk10.50 mm and a resistivity 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 (resac du: ja5d3nx9rj5ra 8 udg8:istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has4v m2jh9 cuj4t0x 6ves a resistance of $18 \Omega$ 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 of platinbcf hm0tc 54 spw-p)w:arz86ium 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 resi;85zwofk 0j fw 4myavp-nw ;k(stance of the platinum wire 48k;f5-waykz0 njm( fo;pwv w 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 throubjk a4g /lwj3yk15a:/ghfc /m:p2 t cbs2 tz/ogh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What currenv 6ndrtcc/o+;zqkuezj2 kp; 5jtr ,np k.7m2 ,t will it draw?

  A 150-W light bulb running on 110 V draws b .zpfs0e3u0f8nw 3sg how much current?

  What is the nominal resistance of a 100-W light bulb designed to be use 3p6t :3 au,aeiwg2/uw ythru2d in a 120-V circuit?uupew t2,aura3yg /3 6:hti2w

  A toaster is rated 800 W at 120 V. What is the resistance of its heating elemenx+vtgey8 yyqp)m*0 5bt?b)v*5 e0ytp qxmy+8y g

  A 200-W resistor is rated d.w4dk3i :g i .qozbr81q )obnat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rafq 7nr e ont7j7k0lqu-1 .1pnfted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at cwm25- j gy rcgvy0+snc8vl3;s3, xz x120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it i rps.k 2h8e.ans used at 120 V, what is its resistance?

  A 25-W soldering iron r iwxzi12yn jzb+6k rawf):d4o)*e8 gbuns on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, ifutto 3gal,(n v: p3yy58x5 z5 t9vzjpm energy cozn( 8tyyl5 avz9 u:3tpmtx,gv5oj3p 5sts $0.08/kWh?

  How much energy does a 100-W lii e3 la-5ont-u+q lo:rght bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V lir 5f9a7 pq,nqbiqb,4fq1imuez2p5 n2 ne for 2.0 hours. How much heat energy is producedf9 m5q in b2ziq5n,pq1q2,b7 pe4r ufa?

  A battery is rated at 12 V and 160 A-h7x-u le y8ff:qbi4: bs. How much energy does the battery store?qy8: xub7-fl e4b: ifs

  How much energy does a 25-W soldering iron use in 8.0r)skyam -r 7sr,w g 8h5vk81.md,y toy hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming *t2ti(psb n j( )bap7zthe power company charges 10 cents for each kilowatt-hour of electricity used, estimate the ann)jsia7 zp*tb( b (pt2nual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per d -4g.lyqr:b atay. If electricity costs 10 cents per kWh, how much does it.yr4b: -qla gt cost to run the computer annually?

  The monthly (30 days) electric bill includedxcx0;t acy p u;z7(q(z the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connectionzx(zutc;;0xq7c( pa y 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 24w:u(1wv )kfz t0 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 temperat1 tuwvw: (f)kzure.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flowlwms51s es0t-b f 5vl9muan5) s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs v nc)z vbe--2dg)oay4p)o3z nut(y/ e$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 the rate of 2.0 hp has 60% ef;uyu axo i9r4,o-s8d yficiency. How much current does it draw f8 9os r i;uo-d,uxyya4rom a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connectel2coyt l5pl* 6d to a 120-V ac power source. What rms current flows through t 2c y*lltl56pohis device?

  A 500-W device is connected to a 120-V ac power source- l-hx8j so(ye. What peak current flows through tj-e xslo8-hy (his device?

  A 500-W device is connected*xfh/z 6gl2ul4.cdbk *(f(qr eik*yt to a 120-V ac power source. What is the peak voltagetg c4krxh*bf(.y q z u/*2l(k il6*fde across this device?

  The diameter of a copper wire is vwk8ybl -. hq50.081 inch. The maximum safe current it can carry (in order to prevent fire danger in buildl8 -bvhyq5k .wing 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 $8.5 \times 10^{22}$.)