A device that produces ele p9z(*h nv uq5cs qoixq3;-r3gctricity by transforming chemical energy into electrical energy is calle9n c-3hzpuv3q;*i5 gq( osrxqd a

  A car battery

  The total amount of charge that passes through a wire's full cross m8kmza-r :u2v section at any point per unit of time is referr-m2 :v umzra8ked to as

  The direction of convention curradpkh+ds7ma w4jz,x.7m67y 7ij a +y ient is taken to be the direction that

  A coulomb per second l so4 lc+js1zm0ebq fu0*m0e7is the same as

  Car batteries are rated in "amp-hours." This is n+l2v shv*e-u 8x5pz za measure of their

  The resistance of a d3r6 kzoq l5/f-m6 tsiwire is defined as

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

  The resistance of a wire i3)jda0e3 80 js.i kmabg0trmt o,7brqs

  The resistivity of aokc+opm7p v/2gv ue zlk3 *my9ch7*3g wire depends on

  Which conducting material has the lowest a*kdncn .akc;9 dv3-r resistivity value?

  Consider two copper wires. One has twice the length of the on0 uc (q1 rns-))eba; bhfunc6ther. How do the resise u)s )uf0;1c bra c6q-n(hbnntivities of these two wires compare?

  Consider two copper wires. One has twice t f0kuxj08vleyb8h/b5yl6 5fn he length of the other. How do the resistances of these two wires compare 50y 8fj0 lef6/xnbu8vlby hk5?

  Consider two copper wires. One has twice the cross-sectional area of)z ipl (*65q *zgved*jck7fqw the other. How do the resistances oiz*qz(qkplfe7d) * j5* w6vcg f these two wires compare?

  Consider two copper wires. On9ht-jmpn/3j,kh e iq5 g7lz ;je has twice the length and twice the cross-sectional area of the other. How do the resistances of these twoi5hj q kj;,z/etmgj 7p-9hln3 wires compare?

  The length of a wire is doubled and the radius is doubled. By what factokx3 oy wqo,3 w3g51t-b x;krx8.fvqwims mw 74r does the resista; w1s q.3,mkowwx3ogkmty b 3i5x-f7xwv q84rnce change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm diuagr073v: ; siw znm-bameter rod of the sam br0zu;agm -73w:visne length and made of the same material?

  The resistivity of most c,drg1l97pt u7p6ycjcommon metals

  Negative temperature co*os9 qp0w 5y3 aefm6ylefficients of resistivity

  What is 1 W equivalent to dqfob 412f 66jsuu.qq qy+:ji?

  A kilowatt-hour is equ bv21+lvw 3khdivalent to

  If the resistance in a constant voltage circuit is doubplp z h2 dop;35.kss(x vdsq2,led, the power dissipated by that circus.q2sd po, 3dvh 2pz;xs(k5plit will

  If the voltage across a circuit of constant resistansyhj8. z0t :bnce is doubled, the power dissipated by thzy.n :j0s b8that circuit will

  If the resistance in 3k+jfuyp - e 4ru6dxo:a circuit with constant current flowing is doubled, the power dissipadkr p4xuoje-:6u y +3fted by that circuit will

  If the current flowing through a circuit of constant resistancr3+ fsxgs727(q*lcew0ui nz h7, r tqse is doubled, the power dissipat*lnrx sqr( u,s2+s 77iz0gh wtf73e qced by that circuit will

  During a power demand, the voltage output is reduced by 5.0w2yxvf gk/c*5 %. By what percentage is thex*k5 f y2/gcwv power on a resistor affected?

  A current that is sinusoidal with respect to ti4cfa-b/iod q /c7zu6t 8gf -thme is referred to as

  Consider two copper wires each carrying a 6yy.1s7jum 9i-f gb tkcurrent of 3.0 A. One wire has twice the diameter of the other. The ras7i ykg91.by mjuf-6ttio 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 temp1 mc+x8 9 :6bjgvftd-+tcvkh yeratures are referred tob8t9+6yhvc :1g-jt +kdc vfx m as

  What current is flowing if 0.67 C of /tdz.:e+et3 nhqxybo)c;o. p charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus i,m8l)a+x*gzj c,da x in 2.0 min. What is the average curx +,)gjli *ad8mc xa,zrent?

  How much charge must pass by a point in 10 0f6iz8enn3doo0wjw ;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 flow;10a cw mlji.aing 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 curre/vajgmq/8 a5y nt, has been left on for 10 min. What is the net number of electrons that/ 5v/ jqayagm8 have passed through the coffee maker?

  In an electroplating process, it is desired to depf n893j o*n ce;iqgfw1osit 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? (Thejg nf39iq;1c8*fn ewo 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, nl+wy ,qys(i3xf6c:n(lhefv , 2qzd a resistance of 3l(i+3x c ,2zlynefv hfdsn6( qyw,:,q 30 W?

  What is the voltage across a 5.0-W resistor if the currenb he**f)mos8 a up4bu6t through it is 5.0 A?

  A 4000-W resistor is conne3qe:tzguo2pa qc.:y hf 9g 05qcted across 220 V. What current will flow?

  A light bulb operating ag1huv t/)l4s pt 110 V draws 1.40 A of current. What is its resistance?ts4v l/pg)u1h

  A 12-V battery is connected to a 100-W resistorpmes5p4fm 0w9q tjp4n;3 1ttr. How many electrons flow through thpftttn;pq p 44j 3r195 mmew0se wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (15t4wzd, uor ;l:2 ykm5 rjmfsThe resistivity of cop15 :jlk ,f 5rodym t4m2zrsuw;per is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.u1 wwiu 8+ jo7fjzfl09; hew4y0 cm in diameter and 45 m long, if the resistivjow81u ju eh 4z7i+ww 9f0fly;ity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wi 6kkosp:1f3;ebuh 0eu;bd 2us re (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 wire77;i34njid1 memfd er (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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. Whazz67 ce0f8b szt is its resistivity?

  Calculate the current through a 10.0-m lon: 2erpqr). jsw6; r fx4wghk4ug 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. w q4rh 2j:fs4kwe6rurg x);.p(The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular 8 u5o)+,ethxbgtna; ncross-section, 1.0 cm x 2.0 cm. What is the vobgn th ,xa8)+ou5 e;tnltage 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 radius of 0.50 mm and a resistivi e:vpcpgve)1 ;;8lfid.i k8fuh99 ocmty 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 (resistivij1 hvcj 31naet2edp1 ./ddha 3ty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance ofs/aai* 2n 2x.mr4mii d $18 \Omega$ 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 resistivi(i8 7ghs8iyicty 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 ofm:b/l.atbtp 6yl-3 a1b zgrq* indium. The resistance of the p/m.:al6lbg y -rbt*3qtba1z 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 through apf.asbpt 6 (74d5 goqln $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200rk.:7 rfb o 2kxeu6:8uj // jxkerxux/ W. What current will it draw?

  A 150-W light bulb running on 110 V dradxq)g 9oly 2s5ws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used im1 z2 8 dsqdc8r0mt9yln a 120-V c1sc9qzm8 dlmr8 t0y d2ircuit?

  A toaster is rated 800 W at 120 V. What is the rh:u3mi4+np h lesistance of its heating elementl4u+ 3nmp h:hi?

  A 200-W resistor is rateda :r7l*wu8at. /rkb -2iol+arbhu7 ar at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rx*gmic6/ ;ry b8jc7 px4fkpi2ated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 12 z- sdey;42hla0 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what i0zkxb/-kvb x6 s its resistance?

  A 25-W soldering iron runs on 110 V. What izhu skv) 1(vg* 3cqg*1uc j3fws its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if energy iua+ la,7e/r3pzle6it2u q9a costs arq7e3u 9u+ai ltie ,z/a p6l2$0.08/kWh?

  How much energy does a 100-W light bulb usek55zeztr/k/saxz k53 in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat entyvj*:9: nw4al l5 tvqergy is p lw:*45l tvtaqj 9ny:vroduced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery st2ax68 7dnkeha*sor- tore?ethxo* 6r7k-aan 8ds2

  How much energy does a 25qjgsc0;u7pi 1 -W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power csjr;eoi+u/kgndn6t z)-+d// bx mjs.ompany charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bnb+ dd nr-ks);/tmz 6gi e/ s/ju.+xojulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours uf, ,dprg5 -frper day. If electricity costs 10 cents per kWh, how much does it cost to run the computer anfu 5gr, -drp,fnually?

  The monthly (30 days) electric bill included the cost of running a ceytpb. 9 rwtj kt9:co*f6ynoa,,nu ;7entral air-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. How9r pjy kwu9cty.,nfa,t oe7b:ot*;n6 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 elecjq a. b.e//tgntric drier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and,gqt//e a.n.jb 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 repair have on the power dissipated in the heating element?

  14 A of current flows thzqp/m-zn hy 85rough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost;5gn,oj-go3 qnh 6b j gal0n;aj,x6vqs $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 hasx ;;abtef mg:w9+jx/ n 60% efficiency. How much current does it draw from a 120-V line? x : gf9wtmax b/n+je;; ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power s37jsu f9xomg-g: 3fdlt hpw* 0ource. What rms current flows through this deog lwd037x*hm -gp 9u3ftsj:f vice?

  A 500-W device is connected to a 120-V ac power source. What peak cu lq y0r9 l6c6ypny*fu(rrent flows through this dy6yu pr*l9q6 l( cfny0evice?

  A 500-W device is connected to a 120-V ac power source. What w. 8k:qw *nendis the peak voltagnknww qe8:.d* e across this device?

  The diameter of a copper wire is 0.081 inch. The maximuul( vvzvg-o.;m safe current it can carry (in order to prevent fire danger in buildin-l;v ozvu.v( gg 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 $8.5 \times 10^{22}$.)