A device that produces electricity by tran 6xfi4;s.qqs )xgf( l-jrmwl:sforming chemical energy into electrical eslq6);fwq.(- iljg:rmxx4 s f nergy is called a

  A car battery

  The total amount of charge that pas)qqj xs* z+j+dses through a wire's full cross section at any point per unit of time is refes x*jq+z)j+qdrred to as

  The direction of convention current is ta,hec.kv pocp( 1,d6z (mluahfv8 d ,7hken to be the direction that

  A coulomb per second isy0f,+9r4 wtyjj1 2;yb xnd bge the same as

  Car batteries are rated in "amp-hours." This is a measure of th/2 va3eb l-ot;pra /eceir

  The resistance of a wire isy 4 vnkfb((:erdgvh 79 defined as

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

  The resistance of a wir 4x sh;rwm5i0dh9l 3ju.cvu1se is

  The resistivity of a wire dix9rxn7y. , ufepends on

  Which conducting matetwgyuy)v )4 t4rial has the lowest resistivity value?

  Consider two copper wires. One has twice t2 u8yqqy+wb:.+ tw2qdfo-0 egq ;oeo q0tns- vhe length of the other. How do the resistivities of these two wires compare?-qq:q8go +yt- .0qvfy2qu twsow2e db;0+eno

  Consider two copper wires. One has 0r- ku+ft 7kz5vz9m kytwice the length of the other. How do the resistances of these two wires c+ymz59 k f ru0tz7kkv-ompare?

  Consider two copper wi1.x*t tahlu6d res. One has twice the cross-sectional area of the other. How do the resistances of these two wires comp6au.ht1 d* xltare?

  Consider two copper wires. 91 n:zjkn/gn ,b :kikb One has twice the length and twice the cross-sectional area of the other. How do the resistances of these two wires conjb:n g:k 9/1znkkib, mpare?

  The length of a wire is doube02d s+9wg(kjh vyu0 aled and the radius is doubled. By what factor does the resistance changh0 jw+2kya g0u 9(vsede?

  How much more resistance does a 1.0 cm diameter rod have co(q9 l nvcqs83jmpared to a 2.0 cm diameter rod of tqlnq( 8j9 c3svhe same length and made of the same material?

  The resistivity of most comtb cn37uj; kuxx h30a,mon metals

  Negative temperature coefficients of resic: fmu:gn1 1ajusl p 0vvd4x94stivity

  What is 1 W equivalenb46n5c*b j nq/cca ex;t to?

  A kilowatt-hour is equival(ajjtb y bt ;.d3gqk7-ent to

  If the resistance in a constant voltage circuit is gd :sn3+ga )aew y36lydoubled, the power dissipated by that circuit3a gwy +sdn)e36g:aly will

  If the voltage across a circuit of constant re js56(8noz kcck 1u.p nwo:m8(:safiiwt8:casistance is doubled, the power dissipated fu5:zaocm88isj :nc1k wc((6:i wpnotsk.a 8 by that circuit will

  If the resistance in a circuit with constant cu: 3rb-pbzr)d mrrent flowing is doubled, the power dissipated by that circuit -3:bmzrrpdb )will

  If the current flowing through a circuit of constant resistance is doubled, th0gt*qd nt 31gq9w)a swe power dissipated qq gndtw1*tg0w9a 3) sby that circuit will

  During a power demanx):3futgak 2e/0qu q yd, the voltage output is reduced by 5.0%. By what percentage is the power on a ruyu x3q q2 gket)f0:/aesistor affected?

  A current that is sinusoidal with respece2* scl5* 0w1hhymbxy t to time is referred to as

  Consider two copper wires e soa5wzq 2c;780fpqdbt1) rlyach carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diametrcqlwzp8 t q0)dfoa1s y 72b5;er wire is

  Materials in which the resistivity becomes essentially zero at very low5zn e bpgd* 4/jt-yze* temperatures zbep - dy*genz4j*/t5are referred to as

  What current is flowing if 0.67 C9mf5y w, 5tybwdq+viq 9ewh17 of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating ap*p0r / ij39bdf 2l w/sqr-hho 8ah7gg2(yxf zvparatus in 2.0 min. What is the averaoldsa2y fh8hzrh j(ipgg rq*bfvx/0w3 -729/ ge current?

  How much charge must pass by a point in 10 s fj ox55 -3x;)mdxkhse ur6 g7lpor 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 iflv bk5eqdf, 30 .l+qvq $4.0 \times 10^{16} \; electrons$ 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. / .d3 hi,f3z7ywk qzmn What is the net number of electrons that have passed through the coffee m7mh k3nz3qd,/zy. wf iaker?

  In an electroplating process, it is desired to deg u+3q/tcvz5 hposit 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? ( v+cgqt35hz/ uThe 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 ,/g1x (mvhvujresistance of 330 v ghmvx1,ju /(W?

  What is the voltage across a 5.0bh7py klrl:)8j x;uv1 -W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What : mvytwp pn8 h i;ckkog9(-gen/f3w75current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. W3zlzqs wm1wb lal,9.7vt fm48 hat is its resistance zt3mlwmv41.7,s8a zfw qll9b?

  A 12-V battery is connected to a2gi;*: zljpds 100-W resistor. How many electrons flow through t:2zs j lid;gp*he wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (Th1w pvhht: x:5ck2y ve(e resistivity :y5t(ve x:kpwc1 hhv 2of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circula*u2uhovr b : q4thg**,u 3ifq4lruo/r r rod 1.0 cm in diameter and 45 m long, if the/ug q3i*rq2:l *vu , otr*hb4uuo 4frh resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resise3* uztt0dbv /tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivi7..hlczl05+0zrd gm ei fwfl;v 2j(ubty $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resistivity?uz2d59jxvo7 r: fsq5l

  Calculate the current through a 10.0-mvfq.,58bdfe o t8:bhvhj vr.- long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nichrome it: bf.b vrf8e,q5dvj.h 8oh v-s $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0 cigb(vr o/1a v/3 d7jism. What is the voltage drop along its length when i/v3ai 7jrdsg ib( o/1vt 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 rafwrj y;js15yw:.z2ea dius 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 (resibkw a 3 s1s9p+e)fyxj)stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor hac0ol 2fri/ed. s 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 resistivisb (vm 4r67g oyim2svswu+kk8)l6(ttty 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 pointd:nk eqfs ,ju6891a/g wrf2(wzu rkz.u7 /oxp of indium. The resistance :u/u ,q/o.znu( zgs97wr8efa x6k2dp1 krwfjof the platinum 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 througxm;o : jkfuk,:q f8;gpmgc 9*nh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What curhw1coo0tpeg.,*etkzx*dg f v+17 y . rrent will it draw?

  A 150-W light bulb running on 110 Vci48m t*ownu r*uo+g tdqx9ln /g1o6n1(gah * draws how much current?

  What is the nominal resistance of a 100-W light bueav2dyjdj7u 9 9,lny)5oojd( lb designed to be used in a 120-V circuit?yuj9y2ad d)vej5(nolo7 9dj,

  A toaster is rated 800 W at 120 V. What is the resistance ob -hcw7if r.0pf its heating element?ri7cp b -.0whf

  A 200-W resistor is ratz43i dn3i.gvuw0ce0-ec vpt 9fl8 x/oed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is vutt9 . f/y /elbwi69brated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what c(uu9/ qky /h.wj pb,gdr2o/qmv m ;8ocurrent does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is+ b ciy upv6;tp+z u)jz;zri-, its resistance?

  A 25-W soldering iron runs oni6u g2 ccf.homaz3s;. 110 V. What is its resistance?

  How much does it cost to operate a s nlx d;;i+uo:25-W soldering iron for 8.0 hours, if energy costsx +:oisuld;;n $0.08/kWh?

  How much energy does a 100-W light bulb use in 8 y-egwojbj (+2.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hourm),cebv aja lqtp1 1o9po)bb/41lzd7s. How much heat energy ma) zco1 ,btvl1l bp b9qd4paj1/oe7)is produced?

  A battery is rated at 12 V and 160 A-h. How much energy does thee2g9zefkx+44v - hqdw battery store?g4hw - d k+zefe92xvq4

  How much energy does a 25-W soldexa42s gx q p4p1l(emw7ring iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hourg- .(e:tv6tfnhfm zp:5sdn3vs per day. Assuming the power company charges 10 cents for each kilowatt-hour of elecn: thvvmns-d6 z:ge fp5 3(t.ftricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day.q+ygg-li57v*h q v5e+ak keo5 If electricity costs g-qoa7k5vqelv+* 5 yikg 5he+10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric nr3*f gl*ataere 6c.ba)c4-yz4bx n2bill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a serif2reaa* *c gnnl3xa.-4eby6rb t)zc4 es 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 in an ele3z/ ayo+l)r0k /pazi m eq:aw,ctric 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.) What effect will the ,l3mz/ozp +a :k)ia0/w eaqy rrepair have on the power dissipated in the heating element?

  14 A of current flows tued u+jf)0om,f tmy9(8h8 pt nhrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costpcjq.rjl2ywxz5fu: e *fw5)led8 n ,0s $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 much cur 0q )f1dl5prhgt.gr2irenp5f rirl)d0 t.1hgg q2t does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flwp /a2 hef;)a h;4brgtows through this devia/)ewpt4;h; rfg2b ha ce?

  A 500-W device is connectel(spkoq-8 +dy7s*x c vd to a 120-V ac power source. What peak current flows through thisx +k 78qylv(*c-osdps device?

  A 500-W device is connected to a 120-V ac power source. What is the peak voltag/bnk(ta eflmv2pexa);fb05( e across thk(x2m/af) pva bbne; ft5l(0eis device?

  The diameter of a copper wire is bg8 s2n-cee8d0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building c8ngeb 2ed c8s-onstruction) 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 $8.5 \times 10^{22}$.)