A device that produces electricity by transf) iqa2uw8e+ dgu /xiz/orming chemical energy into electrical energy is ca/dgz8+ /xweq2u) iai ulled a

  A car battery

  The total amount of charge that passes thr;wefzj6((v n)z25vwf jedu 4vfk) ii+ough a wire's full cross section at any 6() e5wjjf(wd2z nfe ;kf)iv+uv v4 zipoint per unit of time is referred to as

  The direction of conventi9qck5lr;qiy dc,/ a, ron current is taken to be the direction that

  A coulomb per second is t0leb)i 0;z90qs rq dhthe same as

  Car batteries are rated in "amp-hours." This is a measure sg7* 9 avaih(k7fiddo+30qx m of their

  The resistance of a wire is dewn+qbr 8lqji+ e00qh7 fined as

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

  The resistance of a wir9sdfp1/zezr6 e is

  The resistivity of a wire depen0 )tewyfi5 rt5b 6jrw6ds on

  Which conducting material has the lowest re,raa jv ;v35kcq: c4cisistivity value?

  Consider two copper wires.: wy uavy dm7qoqafr:03,w16l One has twice the length of the other. How do the resistivitieswy 07:1 aulwom6r ydavq:,q3f of these two wires compare?

  Consider two copper wirzxmd,)5 te5fxl ;:asaes. One has twice the length of the other. How do the resiet 5: damzafsx); 5,lxstances of these two wires compare?

  Consider two copper wires. One has twice the cro rm k+1, nexzb/7zeo6u75cpat ss-sectional area of the other. How do the resistances of these two wires comez6,e+ kmo7 /ux17 b5ctpnzar pare?

  Consider two copper wi-pn jldhd59,yi :7vzsres. One has twice the length and twice the cross-sectional area of the other. How do the resistances o h7zl, ds5-y:n9i jvpdf these two wires compare?

  The length of a wire is doubled and the radius is doublh h(*bji4vd2fkajkh./5fg ,x ed. By what factor does the resistance change?2/ xkgk fjb. 5hfd4jh(*v,ia h

  How much more resistance does a 1.0 cm diameter rod have compared u0 qhvjv m p;0q:1ob+uto a 2.0 cm diameter rod of the same length and made ofq+uhvj01 vq:u;m0p bo the same material?

  The resistivity of most com s 0dxegs2hht6.yb/o/ mon metals

  Negative temperature coefficients ovbhy /),oii *4dqfs;o5 tic4i+dg y,vf resistivity

  What is 1 W equivalent pxk +ik + /:zrvuha1p2to?

  A kilowatt-hour is equir.a xr2 -hl3cx;tkgx7 valent to

  If the resistance in a constant voltage circuit is doubled fcb(p. k,9 nhf5+qrvf, the power dissipated b,fcf.fkn5q r(9 ph+ vby that circuit will

  If the voltage across a cirtcqq(fb6 fh s0 bw,(;gcuit of constant resistance is doubled, the power dissipated bc0fqh g t;(f6b,(qs wby that circuit will

  If the resistance in a circuit with constant current+rkhem1 9lf zakg: /a 5ty-x4o flowing is doubled, the power dissipaeth5ak9m y1-:+ x/kf4zorla gted by that circuit will

  If the current flowing through a circuit of constant resistance is doubled,-dl/7i 3eb1v;w.neg1lkmjcg the power dij1/l-3l;mk.dev egnci71g w bssipated by that circuit will

  During a power demand, the voltage output is reduc kxr0wdt hv+e0o2)j4j ed by 5.0%. By what percentage is thj4 tj0ro0k2vhedx + )we power on a resistor affected?

  A current that is sinusoidal with respect to time is ro90ew892.xlne nap uh1zfic, eferred to as

  Consider two copper wires each carrying a current of 3.0 A. .eu *khdt2esr:7upef6+ j1owOne wire has twice thepo2.dt *uwe ruh:s71+ fej6 ke diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes e95x* fg oamsld(7 a;(aif ;kbdssentially zero at very low temperatures are referreg7a( s95iff;k m ddaox a(;l*bd to as

  What current is flowing if 0.w2 5xcurgdx (+7k qjd)67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplati08 nbnev gk,o8ng apparatus in 2.0 min. What is the averagn8ng,ovkb80 ee current?

  How much charge must pass by a point in 10 s for the currenum 0lu r;f( 2ybn;cb:ot 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 flowing if 7fj,2ourvp5 h. mx6cp1 a+js t$4.0 \times 10^{16} \; electrons$ 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.ys t,jb.ft(/+ w2uzd t What is the net number of electrons that ha+j zty2df/w ,(utbt. sve passed through the coffee maker?

  In an electroplating process, it is desired to deposi hleib (a8f.c5)hrb4x0f x4ent 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 silver? (The silver ions4bflrhcf0( en85.h e)baxi x4 are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to /0h flx/h x0ieflow through a resistance of 330 W?/hh x0i/ 0fxel

  What is the voltage across a 5.0-W resistorpdtp gzgy;m2r6y w+ xy -m71bzy*np3: if the current through it is 5.0 A?

  A 4000-W resistor is connected across 22usg ly)ym9 3jor51mr ;hlvm56k4pw7s 0 V. What current will flow?

  A light bulb operating at 110 V drawxb9mt( ks+8e ns 1.40 A of current. What is its resistancee(mxns t9kb8+?

  A 12-V battery is connected to a 100-W resistorir*;qy4toy q wy7 a0l2. How many electrons flow through theor7 ytqiylyq ;04a2w* wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The ref. vgvuh 0ili7k6 na//sistivity offi/v70k.hu lv6ina/g copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diame7j gh t0h1m5y -rhmc7mter and 45 m long, if the resistivity1mhh0 7cj7 ygh- mtrm5 is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire5;( : igxjvlen (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 (resistivi,rg)(pirip8;a br- pwty $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 dwu pc8. :gm8*nwqx8u ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the w a ftp.qay06ik69u-eradius is 0.321 mm) nic6t 69.yufpakae-i q0w hrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-sectnbd5wh/w/x;1 as9 p qcion, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (T cdnqsa5w/ p9wb/;xh 1he 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 andi);n 0gijjm ,y.8/a k*pln yjv 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 (resistiv6al8s e+oolu 5ity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor hak0j, oi062 kepruqpkl(vv72 5nlup)ws 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 platihap9/e.jvi 2znum 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 s p3.; rsgqajqg8f407q .cek fresistance of the g s0sja7qfeqg84. q3;prf k.cplatinum 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 th)6,x7yp c ghq(q8r gnsrough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current wil48 cqg/ar xhc: (;brkxl it draw?

  A 150-W light bulb running on 110 V draws how much cur(7ug muo4 i(1j keold7rent?

  What is the nominal resistance of a 100-W light bulb designed1g l8ps :qf*ef to be used in a 120-V lg1sf * :8qefpcircuit?

  A toaster is rated 800 W at 120 V. Wha-(21pi,oe p:z:g.lwfaez tw st is the resistance of its heating elementopt-wl.pfzg:z, we2e( a1is :?

  A 200-W resistor is rate46 f4uon:jmh ama;hp; d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated a (p.*lbf 8mlstt $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it dr-kneu7zmp 4+.gsml: aaw?

  A lamp uses a 150-W bulb. If it is used cpn djc777p e:bswl0va50w;zat 120 V, what is its resistance?

  A 25-W soldering iron runs onn6da 4qsxo1g2)b sjpu 9;*vgn 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hgcre 3e (muarko0i3 06ours, if energy ee(rcr 3a 60m0kig ou3costs $0.08/kWh?

  How much energy does a 100).+ xbm fu cm;qfnu6bvw76dm5-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to aq,s odn2onl+*6 wbf k; 120-V line for 2.0 hours. How much heat energy is prowqs ,o+bodn;2nflk6* duced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery sto 3gabz b.j pcy8*51cfgre?b zycapc 5b3gf j.1g8*

  How much energy does a 25-W sxxiamvr..q , xw5tc9mk sfn5 u2ko:2/ c02l vkoldering iron use in 8.0 hours?

  A 100-W driveway light 8c(( x hnokhri6ca1lr7q fr6 .bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operxlrh8oc 6(fq 1.an7 crr6k(hi ate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. hvp,n/h pf*6 os8b m3q)sxs9lIf electricity costs 10 cf)h986*xslsohp m3q/n s pv,bents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electricbz* p jz;.e2 1wfi mbz2t9rl;iuhn1l7 bill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series1f zz9etl;imwzb.b2h ;rn p2ui* l17j 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 ou+2l gw8dx7 4mc u,uoin an electric 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 mol7u wc+824dxg,uou wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows f4q (ob( vatuy)lu) 6bthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost slwhug/ 4tmshai(97 6o 6mq/hs $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 worvm eum4k/,l0k k at the rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line/40m, lekumvk? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flo99;s u vof 8d6tg8ebjxws through this sxdj v9t8fuo 68eg;b9device?

  A 500-W device is connected to a 120-V ac power source. What pexe*lhn( : ju(pak current flows througx ul*he(np:j (h this device?

  A 500-W device is connected to a 120-V ac power source. Whaioa6b+ dw;x-1tdnl( suwn 2vor.+z i2t is the peak voltage across this devicez ;2-t6nr i+bnvduad2is( l.ow x+wo1 ?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it cd p;jdyki20/wmd x)jdw6* n1 nan 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 o0ndy)w n;dkx d 1 2/wd*6pijmjf copper is $8.5 \times 10^{22}$.)