A device that produces electricity by transforming chemical enerjsqof4agu,)4mwe8i;9 i 7qw o gy into electricals gouqjaiq m4we8 9fi;)4ow7, energy is called a

  A car battery

  The total amount of charge that passes through a wire's full crk bzw8 rg8a8ek(y:1(h /g f awr*c:bdzoss section at any poic: 8fbw 1ewz8g/(:k(kga*8byz r hdar nt per unit of time is referred to as

  The direction of convention current is taken to be the directioet6krkmq0(j. n that

  A coulomb per second is the dl)*ugiv 8s3rr;sw/.6 ujkv k ym5+wgsame as

  Car batteries are rated in "amp-hours." Th4v(, ofgzd;jrv6oeixt4 : .hv is is a measure of their

  The resistance of a wi slq:q2 u,ea*dre is defined as

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

  The resistance of a wire isb45. :mhp9er hh2j nlz(r9rjn

  The resistivity of a wire dependf 3mg vhhw :q8+++x p7dke+vnss on

  Which conducting material has the lowest resistiv0t r6nv-9 hgqaity value?

  Consider two copper wires. One has t,er p0.6(vcs ,2brzbll,jhwm wice the length of the other. How do the resisti,r ,6 vzp,clws2 mbl (r0bhje.vities of these two wires compare?

  Consider two copper wires. One has twice the length of the other. How dohh+y 6xqsmd0. the resistances of these two wirh. +q6ysxhdm0es compare?

  Consider two copper wires. One has twice the cross-sectional area ofpku c08azxhs talp66uw23id r2+ea* 4 the other. How do the resistances of these tw2za3+ka0i 4alpe*6 wtc dxr6s8hup2 uo wires compare?

  Consider two copper wires. Oned:0:au il7(v/zx417w g 5fiqj7cl pr qpde)dn has twice the length and twice the cross-sectional area of the other. How do the resistances of these t5ae(7: l):47dw fp/izxq dviu1j0drlpg7nc qwo wires compare?

  The length of a wire is doubled and the radius is doubled. By what facto2s.myuw-pt ya:a c9j2 r does th yys -jpt a2u9m2:a.wce resistance change?

  How much more resistance does a 1bkqa d8uhnj ,.sb q8+au;.to 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the s8q; aukhq. 8+ot. ua n,sjbb1dame length and made of the same material?

  The resistivity of movr4ft58 lvx 8ist common metals

  Negative temperature coefficientss8hy dmy8qiw+ 3 e36qz of resistivity

  What is 1 W equivaleng.wnjf(w2 dgf 4m t:.yo.5duk t to?

  A kilowatt-hour is equivalq v,st-rxh zf8-3t5;fhc;jy -vqwm j,ent to

  If the resistance in a constant voltage circuit iso:a(f)w3plcw.r co fmn 6 p499t0uxce doubled, the power dissipated by that circf0) wuexoc ( 4 p6tofal3m.9cw prc:n9uit will

  If the voltage across a circuit of co(0 )kwz rf;o/y,ib/rg gfjwv08 8z skpnstant resistance is doubled, the power dissipated by that circuit wi;z8o(pyf/ )kib8z r0kwgj/vs 0r gw,fll

  If the resistance in a circuit with constant current flowing is doubled, c 9nh,dr2 l.wb8nloqdw ((ix/the power dissipati/2bxq8h nr loclw,wd(( 9dn.ed by that circuit will

  If the current flowing through a circuit :)7a8 xzd fvbwof constant resistance is doubled, the power dissipat xv)b dzfa:w87ed by that circuit will

  During a power demand, the voltage output is9(bu oj0el5dj reduced by 5.0%. By what percentage is the power on a resistor9 5dlje0jub( o affected?

  A current that is sinusoidal with respect to time is referred to as2zg0eik pla9/

  Consider two copper wires each carrying a current of 3.0 A. One wire has twiceu0ncm572d zaogurj1 m6.r rx- the diameter of the other. The ratio of the drift velodc j5oaxmu.gu nzr21 0r7-rm6city in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially z5e;y tn zwp 9st9zsl/) x(pb9xero at very low temperatures 9psent9zs / txwl5 )p(zb9 ;yxare referred to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 wl87gus1yz6c).bv mis?

  A charge of 12 C passes through an electroplatinvi v,i:3,k/ej 3j*m y3n7d8vaash offg apparatus in 2.0 min. What is the average jo, as, e 3v/3 vd8mvk7yh:i3njfafi*current?

  How much charge must pass by a point in 10 s for the current to be 0.50 A?kw(:a;z2:4 ;kq svr; fkqb pmc

  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+; y ceattdzxbp, 1*w. $4.0 \times 10^{16} \; electrons$ 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 beea dp.ey sb(g3:n left on for 10 min. What is the net number of electrog:deb3s (.ypans that have passed through the coffee maker?

  In an electroplating process, it is desired to dep 1e mysvbr ;./twtyy7l-16q sci;y4ofosit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the cuyq-o ; tm.1/vfwyry;ss4el 1 6biytc7rrent be allowed 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 re.,kqb 2 xhbwe0 tve vck..h4a5quired to cause 4.00 A to flow through a resistance o.b axe 0hbtve.q2v4,c hk5k w.f 330 W?

  What is the voltage acrosb;ocg pmyi0rdr yve1)o0q(w t6;c4/ ds a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curu 7n67 vt8;crnnglbwd-y3 55zgc muq65zcr 5qrent will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its r:* nv tjx7ol9 e 7n4 k2hwvgzz5tg.dw+esistance.xv 5z g:ewkjghdnt *77o 9l+vz4wn 2t?

  A 12-V battery is connected to a 100-W resistor. How many s8)tjfwk/m gdlh/ w-b- l+f u(electrons flow through the wir/-b8g(whm +/tfu s )- kfldwlje in
1.0 min?

  What is the resistance of 1.0 m copper wire of diametmu3 u;.mfo7 11dn mt0z/aw.s ssuy :efer 0.40 inch? (The resistivity of copp ta1um u013. yufodmwem.sn/: 7s sf;zer is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a cpj)jb 1*, f1nc ww qjqfq)k9w)ircular rod 1.0 cm in diameter and 45 m long, if the cqw) 1w9b ,pj)kqfjw) qj1fn*resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper r *nb0 u 70nc+jt1bnojwire (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 (resistixj jyjnkq3.rog ( zmis)1 c8oj2pr6 rb65y/,fvity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ( azj,utd)uo8oem c8/resistivity?

  Calculate the current thro.zbv;pa+ycr o8: +gihugh a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected tr +oa:8ygzvb.+ chp i;o a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm 4hx.f -ye* ewxlong and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length whe .hexe*y-xwf4n it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wir9x s52z0mkvte e has a radius of 0.50 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 (ru)c p,bl2l u 67w)aq*gugh ox-esistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistan /*uy ; ogo5emwq8d*xvce 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 ry xfa;dpb4di ai36:t; esistivity 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. Th 2ogk 6-v bsoc6 t0ryg*z: lp)aq7uol7e resistance of the platinum wire is:qsgprl7la0-zb7o6kvo c6 o 2)g *y ut $2.000 \; \Omega$ 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 through6 k(b3;graxn o an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at iseix:7n a4kbp+lhr (9yh :z*1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much currenta wk+ru9gn:b; ?

  What is the nominal re b fx)yv2is:)ysistance of a 100-W light bulb designed to be used in a 120-V circuitxfy:viby2) s) ?

  A toaster is rated 800 W at 120 V. What is the resistance of its hea(.dumg3en/fjufiaxjskk m,8u 9, op-q.30 goting elemeng9e0d-mkfps(xji.,n./ kq u8ofgam uuo 3 ,3jt?

  A 200-W resistor is ranx9 bz;es kao*2x gu9*z9rz 9jted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratedz /*t4)vgnkm m at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what cwbw-;f qmw9(j urrent does it draw?

  A lamp uses a 150-W bul:+vgzb6 c hfl.2h7falb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on y8/n5e b/evpwgjgpkg 06+ x yc;kd-u*110 V. What is its resistance?

  How much does it cost to operate a 25-W solderin+7/pt.n n3 :cbj+vltit8 ltqyg iron for 8.0 hours, if energy costs +y7t+bnj8 ll: /nitt3t cqp. v$0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours9vvmf74ho 0,hhfc zxw,t +bep ydl35:?

  A 1500-W heater is connected to a 120-V line for 2.0 herua n:c p8b1xbs62*7ac9l z cours. How much heat energy is produce2 *bc:lc71p8zcb9 6r anue xsad?

  A battery is rated at 12 V and 160 A-h. How muchxpcm r*z 7g/95vmc7c ehru6t( energy does the battery store?9/v*uec6pcr7 t(hcrm 5mxz g 7

  How much energy does a 25-W solderiysqz1k 3 (yon4ng iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the powexps5jd );tz 4xr company charges 10 cents for each kilowatt-hour of exz)tx; pd4s 5jlectricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (comput(a w dx tj;2v2g-wrif)er plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annua)wvjdra2; (xtwf-g i 2lly?

  The monthly (30 days) electric bill included the cost of running a central ai1ze)5adr59z gk4mmg ( jox5emu;woq , r-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs ka9mgegm m1 xq(),e 5d5zw zjoro4u;5 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 ope- ;q1ftk txwxag; :v0yrates 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 ona w ;1k;tyxfvg:0 -tqx its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flowww ,5bl/ habtu8zs0 w(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 costsl(s) /- n9cb pvnxr;vf $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 1fsuu 5yi7+qk the rate of 2.0 hp has 60% efficiency. How much current does iti7uq1fk 5us+ y draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rmsyu3/.w k,hcnrb ubjl(0q7x 8 n current flows through this de8 bbyr,ju/l knx 7hq3.ucn0w( vice?

  A 500-W device is connected to a 120-V ac power s+g3 k7 unvdpdq;4xs3fource. What peak current flows through this device4p 33v sun 7dfdq+xkg;?

  A 500-W device is connecjz8r+sw( , nerted to a 120-V ac power source. What is the peak voltage across this rs+n ,ew(jrz 8device?

  The diameter of a copper wire is 0.081 i) ntly c z722l7vnkge7hccsl5*9w7t xnch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drifkzc 7wyn2l9ntx5 )77 gectv l*cl2s7h t velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)