A device that produces electricity by transforming chemical energy/kr* wgz/ odd4 into electrical energydz/4d*w kg/ or is called a

  A car battery

  The total amount of charge that passes through a wire's full cr)dx8c9lcs91z0z6cg gzo */ fekiw/e soss section at any point per unit of te6l0 zs1iw/fx *ksg8g99c)cco ezd / zime is referred to as

  The direction of convention current is taken vppb4 h+f 0mu/5q2my.zeq6x cto be the direction that

  A coulomb per second is the kh wf0 h)kmkujymr: 9hx.pi )1 s75b6wsame as

  Car batteries are rated in "amp-hour93d*ujqf/x:hwsl zl4xti0e3 )0 mt lrs." This is a measure of their

  The resistance of a wire is d/ ulhyg2:z tm0qr ;:myefined as

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

  The resistance of a wire seo )wmarlu( 7z+t22kkgm 41his

  The resistivity of auou hk7b0 (oql2e.-re wire depends on

  Which conducting mate 5xpm1vj p2uju*:.s7zo7zygt rial has the lowest resistivity value?

  Consider two copper wires. One has twice k014 11dn*rcn a7lqgyfmz v 1tthe length of the other. How do the resistivities of thesrgl41nv 11nmy c t1f d*q7zak0e two wires compare?

  Consider two copper wires. u8uy g+sazptj-q02qc7u flq.,9 +l agOne has twice the length of the other. How do the resistances of 0ju -,a puqay+llqg.9s u7+ ctgf8qz2these two wires compare?

  Consider two copper wires. One has twice the cross-sectionalc)v , q4iqvsl qk-1*nc area of the other. How do the resistances of these two wires comp vq * )cc1kniv,sqlq-4are?

  Consider two copper wires. One has twice the length and k;nmn: f en.:.;nmqi 4mre9hztwice the cross-sectional area of the otkm.9;::qenr nmhn.ef4 im;n zher. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled.i19(cli2ehu bu-o2em nh ,f (e By what factor does the resi c2 2 fme-h((lo bui1ieuehn,9stance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm dito)+ 9ek d;(o 9xadwftameter rod of do9+dwea k)tft9 o(;xthe same length and made of the same material?

  The resistivity of most common me qq;(cbc 4v3pmtals

  Negative temperature coefficients of resistiv( 2ryunv.p od8 h .3uri8xkx-rity

  What is 1 W equivalent toaxr;hdo7 2e x2hv36i8wt)plcf+ qp.v?

  A kilowatt-hour is equivalent ,y+kt )46tckk++g)qxuyfla; pf psc.to

  If the resistance in a constant voltage circuit is doubled, the 4im0f hmmci/hv/ rbu2 e;u6v/power dissipated by that circuu;/ h 4m2vr6mihiev u/0f /cbmit will

  If the voltage across a circuit of constant resistance is doubled,o51 dyhnq 27k)rm9wxb the power dissipated by thk9qnw hyo172 r)5d bmxat circuit will

  If the resistance in a circuit with constant current flowinsfj ;lus/v9 w21ravs:kog 4g6g is doubled, the power dis4g; sogsf/ vu2k9vwlra1s :j6sipated by that circuit will

  If the current flowing through a circuit of constant resistance is dm0:r. vtn(hmv; w 1afdoubled, the power di mvhw0 r;(1:.mfan tvdssipated by that circuit will

  During a power demand, the voltage out hy:asj(wi+moq;, db+put is reduced by 5.0%. By what percentage is the power on a resistor +i js;(md qy:wh+, obaaffected?

  A current that is sinusoidal with respect to time is referred ed x+eurk .49sto as

  Consider two copper wires each carrying a cb8e03p.xxvr 7n 9i )pgjerbb9 urrent of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in t j8.bein pbr3x7)b9 rxpv9e0g he smaller diameter wire to that in the larger diameter wire is

  Materials in which the rej.3tyq vi7cjj7gcm /5 sistivity becomes essentially zero at very low temperatures are referred jcv/j g 7c t5y.mj37iqto as

  What current is flowing if 0.67 C of charge paee-pvifo /g(f:y e11w ss a point in 0.30 s?

  A charge of 12 C passes through an electroplati6s*.b ;im ciu7. wbvrl5x +jyxng apparatus in 2.0 min. What is the aveb um jir6ws+vy.x *xc 7bli5;.rage current?

  How much charge must.qbxx +nh/kma4u5;tbw fr1b5 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 flowe1 kw1 ,6r9t4c:kq6eo hnkvicwiy*2w ing 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 current, has been 5w-q vj2pz: ,jqjsjays(h 16c left on for 10 min. What is the net number of electrons that have passed througj:cw- sqqj,15aysjjhz vp2(6 h the coffee maker?

  In an electroplating process, it is desiren17e l/tas ts.ahox o)+z4gs+d 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 to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 1a4+eogtzs +7ss)hn.xt/ 1 loa 08.)

  What potential difference is required to cause 4.00 A to flow/h xt-v)r*(z ybt,0sq 0zxxje through a resistance of qxhb x t syjxvz(tz-/0)e0r,* 330 W?

  What is the voltage across a 5.0-W resistor if the current through it is ;hph - ,cy7mvtt6nv*5xl gai+5.0 A?

  A 4000-W resistor is connected across 220 1ud.91 n0ou7syqwi + hwjy5j)vjr p0n V. What current will flow?

  A light bulb operating at rcpdr )1sm9 l,/d-m5vrw q5bc g*v6)sn+xrxx110 V draws 1.40 A of current. What is its resistance?s-d rx6)5mr ,n)s5gc+mpvv d9 c1lx*qwrb /rx

  A 12-V battery is connected to a 100-W resistor. How manyly l*)(8+ekgm :u strb0 tzzv1 electrons flow through thesl egl (zv0zr)tm:*bt 1 +uk8y wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of oyu3,9pk*oaqd sf c 9oru/6u6vhv5 v:diameter 0.40 inch? (The resistivity of coppdy,qcoru9hv: s p/ u59au6v3v*o6o fker is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, if o. 7wx, /uvuipr594wc*lzsb cthe resistivity *sc/px5i uuvwl4 b, ozr7c.9wis $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wirhykf1tm7b2w *jac*/h e (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 (resist;mcnf. g em8lq6*2p gos,dksyk7;u c.ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measurez-nnfbgpfd-xz7od;pi7+7 sd-:v gi ( s 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gaugeut2.ctnc- wi+ d jsj.* (the radius is 0.321 mm) nichrome wire if it is connected to2i*c .dtc-s.tn jj+uw a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm lir3w5/o q;s rq4q0/w.vbjh pj ong and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (Thp;/ oq0h 4q3w.q/5w jrsrbjvie resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius dn(eg 2.)eb:unapn/u 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 wireyxt2 ja1ui u;138f * (ul adnmw97sdif (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 resistanmwvxc) sra7uy4,ce3fyu + 8l(ce 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 resisf7zynj;2ryq7b)xu :hf9(.2 xhb jr q ptivity 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. The resista3 kcpfb) :4xxpnce of the platinum wire iscf kxb4)3px:p $2.000 \; \Omega$ 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 throu1 ofnd.tl hb8g -qc.sca*4xd1 gh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at /u 5y/h+ayqu-h++dv6tkdzq w1200 W. What current will it draw?

  A 150-W light bulb running on 110 V d(ysa6 agwg o3: *m: d+runtdvg5jug ()raws how much current?

  What is the nominal resistance of a 100-W light bulb designed to b-ga)g ip* f6ice used in a 120-V circuit?-gc*a p6)if gi

  A toaster is rated 800 W at 120 V. What is the resistance of its heatiijd +(h8y q3 9nqtsg+xng elementg + jsqi(q3y 9hx8ntd+?

  A 200-W resistor is rated at h a94kb2arq+;zdu,.yvwz4ez , 8szcn$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated vw 28t i1s8g:lrqkw;ldk 51sc at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, wh(sk k +tz.mw5eat current does it draw?

  A lamp uses a 150-W bulb. wkgms 9971otq If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resi8u: ).qhb v5o gi ;uh-*r xrdxc;(cpafstance?

  How much does it cost to operate a 25-W soldering iron for 8oo9(mml8(m,u .objld- y qaq/.0 hours, if energy co8/(qq b m mo.( o,-ajudoll9mysts $0.08/kWh?

  How much energy does a 100-W light bulb use in can-6 xbcsn.it.r. x,yl)b+c 8.0 hours?

  A 1500-W heater is connected to a 120-V line fom2 ,gs- g na2xhu2yqc-r 2.0 hours. How much heat energxc -a2qg22h ng-sm ,yuy is produced?

  A battery is rated at 12 V and 160 A-h. How much energy does thxrb4* d 9sl+fjeqe/:pr o- i6lb,ht 6ne battery store?xhei4b+/*-:,le t pron fbq6dls9 6rj

  How much energy does a 25-W soldering iron us; :/n- a6,4eho; bqmy6dzati 6rwcuvne in 8.0 hours?

  A 100-W driveway light bulb is oj cc5jdj5kkdb6; c,k-n 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, -dccjkj6j5kbd,; k5 c estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If eleec* wp ,p)zbuf2 lub;o7*mcf -ctriu)w, -f* eml b*bpuo7;2fpcczcity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included *+ rs kw9yse-wbz+87j,u:yf xfz if8athe cost of running a central air-conditionyb-w: ef,xsf+zk+8ui *sr za 9w7jyf8ing unit for 2.0 hr/day at 5000 W, and a series 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 electric drixa h8n; d96nwier 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 ba8inh 9nwx6;dy 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 throug *3szl:c cgb5oh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsj*kse2x1k b+8b a 8qkp $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 ral ve26w,dp+/afusm lh qep+z5* y92sr te of 2.0 hp has 60% efficiency. How much current does it draw from a 1l2 *fw5 ruqp2ezas ed 9s/l+v ymh+6p,20-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power sourtw8r,08et werh x3:qpk g.8sdce. What rms current flows through this de0k8h88rrw. x3,etd:q sgwt pevice?

  A 500-W device is connected to a 120-V ac )tz2g -qwxpg3 power source. What peak current flows throuqxw32ztp)-g ggh this device?

  A 500-W device is connected to a 120-V acjw/x*4fcc.d:ioflx+ s)v 1rh power source. What is the peak voltag.:vx +h xocwlfs) f r14ji*cd/e across this device?

  The diameter of a copper wire is 0.081 inch. l77,szf86h xacd 3kka 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 drift velocity of the electrons? (The numbf 68k7k sd,xza 7lcah3er of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)