A device that produces electricity by ts5k5tv *nxhnzdrstt; l 6,h38 a3qv 1vransforming chemical energy into electrical energy t8zn5hxtr;ltks3nq5 v 1*d3,vsah v6is called a

  A car battery

  The total amount of charge that passes through a wire's full cross sectiog20zc x2 :hto07zm vxralzk4(n at any point per unit of 0k(o70 h z2l g2xa:r4xtz cvzmtime is referred to as

  The direction of convention current is taken to be the9 ph(yo-jc)gi direction that

  A coulomb per second is the same aq 2zee me7)ll3s

  Car batteries are rated in "amp-hours." This is a measure ofxitrwb g/2e-u ,m hi7*)aoeg. their

  The resistance of a wire is defined ajf0*giixog5/67 ci3s itop 4o s

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

  The resistance of a wirev i7mr +27vdkz-o0uakm6q9i h is

  The resistivity of a wire depends on)uye5fyy tb;1lmj *2* uk0dy n

  Which conducting material has the lowest resistivity value- .jyxnudu9 r lt5a-n3?

  Consider two copper wires. One hasm.p. u tx fwj/:q784kaddv/ec twice the length of the other. How do the resistivitiesw: fmv/cqd.a4pk8u e/ xd.jt7 of these two wires compare?

  Consider two copper wires. One has twice the length of sk7l a4b t-3cgf6g di7the other. How do the resistances c i6gbf-3a7 4g7 kdtslof these two wires compare?

  Consider two copper wires. f 1s)+ikjpku0f d36 kaOne has twice the cross-sectional area of the other. Hua d)f jk6kfs1k+ 3p0iow do the resistances of these two wires compare?

  Consider two copper wires. One has t v6oll27u j j/uxm(s4qwice the length and twice the cross-sectional area of the other. How do the resistances of these mqosv76 j/2ulj4x (lutwo wires compare?

  The length of a wire is doubled and the radius is doubled. By( h1 yuhbwzv8fvl-07eyf6cjqo rs1x12w* so1 what factor does the resistance chayvwl7 1o-e8oc1(bqfuj1x* hsy2f 0 zv wr1hs6nge?

  How much more resistance does a 1.0 cm diameter rod have compared to .laareq0 4s;xa 2.0 cm diameter rod of the same length and made of the s4 eqr.a;0xsla ame material?

  The resistivity of most d,zp2odv b-3y imiud )pstz:f)lt7 c+.jq, y ;common metals

  Negative temperature coefficients of res2 jyfmth+djt +d9 r7l,istivity

  What is 1 W equivalewbsk1 vxr7qqb2iw o(;cc;o 66nt to?

  A kilowatt-hour is equivkhv,zvj)si2k+ j .skvit 69kod6 o56valent to

  If the resistance in a c.y .uii-vi z0amm *e4hdsyt/6onstant voltage circuit is doubled, the power dissipated by that circuit i-*i 0z4e miytv. 6s.hmud/ay will

  If the voltage across a circuit of ft 5rx1)p 3neeconstant resistance is doubled, the power dissipated by that circux)fe15e3p rt nit will

  If the resistance in a circuit wik9c wfohl- ,0 r cmz0p4ptmh(2/hef x,th constant current flowing is doubled, the power dissipated by that circu,9 mfhphpce, 40t(k-/hor x wzm2c0fl it will

  If the current flowing through a circuit ol9p 5yy9makw /f constant resistance is doubled, the power dkma5/y9wl 9 pyissipated by that circuit will

  During a power demand, the voltage output is re13y3 fpyyxk s7p9i/ yfduced by 5.0%. By what percentage ip71p fx3iyy/k9f 3yyss the power on a resistor affected?

  A current that is sinusoiw+/ad6u **xif9i c(gtf t0trqdal with respect to time is referred to as

  Consider two copper w7a2jt2c.r c9vf uw( f4di+y pvires each carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratiop9.jvdt 4fv f wu2cyraci2 +7( of 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 low temphbtvcg t9 2a: 7s;1phheratures are referre pg7vatch hs2: b;ht19d to as

  What current is flowing if 0.67 C of charo .k1e licu2e)ge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. Whlai 3gnko)li-.cddvr4 m )3o :at is the average curren aml i))-c:doln o vidg343r.kt?

  How much charge must wooe sjvs, (as6af a a 7*s/afl1*bb,w+dir ++pass by a point in 10 s for the 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 flowing ,xe 1ge(xc4l32z v nzmif $4.0 \times 10^{16} \; electrons$ 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 drac.n k50r x6rk17o.im xt1p ctgws 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have passed through the co.xn 0r5.gr m67tki1pccx t1 okffee maker?

  In an electroplating process, it -bn(5dq- hew cis 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 tqc --d ehwnb(5o deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause5ez)hi 5 str1p-(rgg n 4.00 A to flow through a resistant -1n5 shirrze 5g)pg(ce of 330 W?

  What is the voltage az owqogo2b ()ys5)at9cross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curs. n/b5ale tk1rent will flow?

  A light bulb operating at 110 V draws 1.40 A of current:gno)); jk.* ge mkgdsfew.u:. What is its resistance?:m ekj )g*g)sdf.kg uwn:.eo;

  A 12-V battery is connxh cx1 gysujm xd qn*m0;blm:ox24(1 /79gdrx ected to a 100-W resistor. How many electrons flow through tmm/gj 1y19;x dxm:2* nqo l d0gxhsb4c(xurx7he wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of cz1 (o ud5v 2x9)j zdwhr+9kq47tmjjs diameter 0.40 inch? (The resistivity of copper is j14cs rk+ x2td jm )uvj9ohzqw5z9( 7d$1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular h jw )cq6bo*6f9ypby +rod 1.0 cm in diameter and 45 m long, if the resistivity is qfybco 6wjb)*y h p+69$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistf ,ne5okp3zf m(lzt;n h.ci5havj .60ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resi)4 o: avf du29dmgd+w t/b2drnstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, me ,3kb- fo gs.j-v qocf9w40wcsasures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 m . cu-n16awrbcm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrome in cwa1bur c6.-s $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular coh5bpvic+)eu8) 7rd e ross-section, 1.0 cm x 2.0 cm. i))8bh vrpe o5 e+u7dcWhat is the voltage drop along its length when 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 lpyr+kzf3 g0) ctqc78radius 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 copyzslt ;5htb51 *-czqqf+c ;aq0uhz3 cper wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resisc)3f, y4h4c tz1b wusntance 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 o6zl4 aa3ekj5yc5t(d 6exsur*f resistivity 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 melosf* 1r3-hmczting point of indium. The resistance of the platinum wir1h*os rc 3fmz-e 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 through as:tpb 4.) qkhrn $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer i/-uhntov ;:arcxu xwk;63ex4 * p;juws rated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how muc33 k5bia8 u ry/c6v,aqg7kv:j:jav cph current?

  What is the nominal resistance of a 100-W light bulb dpwpi)4evx*df om odz*o6/c4- r6 kas-esigned to be used in a 120-V cim zoer6ax p**- pdivf s6d ck)-o44/owrcuit?

  A toaster is rated 800 W at 120 V. What iset7. mglsjz 9y6yz 6+c the resistance of its heating elemeny mcg 7jy6tz.z6el9+st?

  A 200-W resistor is ra dp rpoh,17hag/qt37tted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated a 5dr 7g/gqs,mtt $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what rwv up;pj,;9u:pbti , current does it draw?

  A lamp uses a 150-W bulb. If it is uwq p9 (5vae9prsed at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110s-6mn-,rm 6ujt-yhcnr,i: br V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron fo00pba) ec:kf mr 8.0 hours, if energy cospm: eb k00fc)ats $0.08/kWh?

  How much energy does a 100-W light bulb use in era,i6,an6j ,a2ezb7e aq9bz 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.)mwrvp4 m mr-60 hours. How much heat energy is produced?mmpr mr4 )v6w-

  A battery is rated at 12 V and 160 A-h.b88*3y9rl0 iq /uo;tll(.jjvg*kbzd ex )jg i How much energy does the battery store?.uqo *r i8*8l/jgl3kxgb edb0t 9j v;y(zil)j

  How much energy does a 25-W soldering iron use i3x4s v vlfh4,t lj 4x/y0oqd)j(3jofqn 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power company cympe:0yp gozjapc.+(gjht 0py9 5 +r 7harges 10 cents for each kilowatt-hour of electricity usermcp( +7eo: t5yypazhp00.pgj9y+gjd, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours yrh2r+x 89:z; olsbno per day. If electricity costs 10 cents per kWh, how much does it c:2or9x lsnz +;o r8byhost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central air3 8b.cp3jmr)qb lg;rkwy2c/v-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. Hgc/ k2p8lcb .vryw3 );rqmj b3ow 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 g 4p 1.omt0tlfpenerates 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.) What effect will the re 1pl4mtp 0f.otpair have on the power dissipated in the heating element?

  14 A of current flows through( u2d6,udbjtw0 5trr 6k9jsoc $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costpy qrn dwx;/ij.8r ,lc;3,v wws $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% efficiency. How kngm1 l hidt.ynr//tfoh 6jf6/3c/.imuch current does it draw from a 12 tyjrchg f1/h nkf/66m3n/t/..dii lo 0-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 1n s,w8 u-ajy8xe p(1r cye50co20-V ac power source. What rms current flows through this desjcw (u nro8x5y, 1e0-cypea 8vice?

  A 500-W device is connected to a 120-V ac power source. What peak curr z.d87 sh9cerxent flows through this devicc exs7d 9h.rz8e?

  A 500-W device is connected to a 120-hc ui:1lq + tooe1s( b45yek+fV ac power source. What is the peak voltage acrsbt+1q4 ouo1(he:l5k+fie cy oss this device?

  The diameter of a copper wire is 0.081 inch. Th: *,j65cl5zwov nc*eqn5v it he maximum safe current it can carry (in order to prevent fire danger in building constructioznct 5e iqv* clo:jnv5h *6,w5n) 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 $8.5 \times 10^{22}$.)