A device that produces electricity by tr 1 ezm+v(.9 xxqik8ggaansforming chemical energy into electrica+89ke1axi.gx v mg qz(l energy is called a

  A car battery

  The total amount of charge that passes through a wiremertj. z x,r,zl8nnhta +v)3- ix q02w's full cross section at any point per unit of ti i-8t 0wn3e)vhn+2a.lzj,xmq ,rtz rxme is referred to as

  The direction of convention current is taken to be jf 1 g0hp0s)(mx4g 5r6qlkahathe direction that

  A coulomb per second is the same asiljd6f +;z1xlt8 5o/ wn ap2cl

  Car batteries are rated in "amp-hours." 2c4c olaet+-o This is a measure of their

  The resistance of a wire is definedgxvje79 c.-o lbl64uw as

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

  The resistance of a wire isoql:k 6l;l9xr

  The resistivity of a2 7qcex j*w*u*k,wa5y+ do hxt wire depends on

  Which conducting material has the lowupj/ ;jk2qnff m+j 2+yzc-- djest resistivity value?

  Consider two copper wires. One has twice the length of the otqr; uyh24+/lcyxt/br 2f s: :*jtrk qfher. How do the resistivitie4syl/rxf *t/t u:r22h;kjq c+rf y:b qs of these two wires compare?

  Consider two copper wires. One has twice the length of the othe 5dflllgm dd e5e58lnfg*; ngi*:5x x.r. How do the reslxgd5 5gx dd l.l* :g*eim5nfn58;le fistances of these two wires compare?

  Consider two copper wires. One has twice the cross-sectional area ofaw+ naojm 020vz3+rs w the other. How do the resistances of these two wires compare am+ zwnv0as02or+jw3?

  Consider two copper wires. One has tpe2)y*5d hof) eg oqruqvtco0 4d-j68wice the length and twice the cross-sectional area of the other. How do t46 or e5-)*u vgdt)d2 pqjcohfoe 0qy8he resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor does o7ko.jk h+in(0gip8 tthe resistancto+7. o8k gjkinip0h( e change?

  How much more resistance d;0roylzxfel7b tp 4w, xg7+,q7zk, aw oes a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the same m rbx zg0lp,wl4yo,;7kt7,z7wfa +e xqaterial?

  The resistivity of most cr 6yee /k t 1lie 0bpsqvivn .ux2b+2u7v:d73wommon metals

  Negative temperatureg /6k * d.*dgoooglce l.apt), coefficients of resistivity

  What is 1 W equivalent tz x.rtp2q5kg8 o?

  A kilowatt-hour is equivalent t.3 e - aco(-jxk*pxdpso

  If the resistance in a constant rnf/qa;l : fc,xy+5 (zme8 lkyvoltage circuit is doubled, the power dissipated by tha5ky, qrn(+flmfza exl/yc 8:;t circuit will

  If the voltage across a circuit of constant resistah 1a 8 i sxfs8q,l;ufma n*a6,niym2)znce is doubled, the power dissipated by that circuinz q18i8,i, *m fhsxya6af;2 sn)uma lt will

  If the resistance in a circuit with constant current flowing is vpib(k.+z l )x+wdx 1udoubled, the power dissipated b w1ulzxbp.)+vdxk +(iy that circuit will

  If the current flowing through a circuit of constant resistance is doubled, th shg gnkmep+ h-rpt*g0;db +2:u6kqp *e power dissipated by that circuit wil*n ppt qubs gdge r6hm*0:g;k+2+- hpkl

  During a power demand, the voltage output is reduced by 5.0%. By what perceng 1p;ia-3-bor e.nojntage is the power on p3be; ia- 1g-ro.j onna resistor affected?

  A current that is sinusoidal with respi pkvh+6avo7 ,bgt e34est;k y- ci*j 8jv(c2oect to time is referred to as

  Consider two copper wires each carrying a current of 3.0x9 24 dvm t)xsluo/lc u/hdw5/ 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 diamewcxm slx t )/29 4/hl5uu/dvdoter wire is

  Materials in which the resistivity becomes essentially zero p av2rfp;: livxc 5.xxb8:(2yzmrr/xat very low temperatures are referrfa :byp r:8 x;2zc/x5rrm2(.pvlivx x ed to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 sh9ctew u2b* 4n?

  A charge of 12 C passes through an electropl0rcomh gn8t(-n2 :sgaating apparatus in 2.0 min. What is 2r-snc om0g8hg:(tn a the average current?

  How much charge must pnhw*rbeq q m6,/ enw1/ass 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 if olz dk8f/+3r)na4jo f$4.0 \times 10^{16} \; electrons$ 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. ;zic le qjua2 ..f 8.afhvk2n1What is the net number of electrons that have passed through the coffee makefk.uf qaieh;8 a.n2c12vzl. j r?

  In an electroplating process, it is desired to depou5 6nkdvp) i)bsit 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 cha) kbip6d)5nu vrged, and the atomic weight of silver is 108.)

  What potential difference is re5uu c a9gw4qq.quired to cause 4.00 A to flow through a resistance ouq ugq945acw.f 330 W?

  What is the voltage 9;awpxrx 5 34ivdzr4dacross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. Wh:gchgbz.*kn cd+y w7+at current will flow?

  A light bulb operating at 110 V +yv svc4bss01 draws 1.40 A of current. What is its resistance?yvb1vs s4c+0s

  A 12-V battery is connected to a 100-W resistor. hw1uyc :*o)(p+sq f7mcbos0a How many electrons flow through the wire incw)cs *p:hbq7 mf u(0 ao1os+y
1.0 min?

  What is the resistance of 1.0 m copper wire of diamete0uh4vht c -u0x06*z wrhhn rw(r 0.40 inch? (The resistivitvrx-nhhuw0 tzh*w0c(6 urh4 0y of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistanceax*z9.qvl l7 ci hx0o7 of a circular rod 1.0 cm in diameter and 45 m long, if the resistivity9 c o70zaqhxv li.l*7x is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivityh s4k u7(kxnz+ $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistjuh8iz5 syfk jsu0ca *9gv79 () vr(ffivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, me ;ujg a53b.)ezpa ifp*asures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) ni+dn00nm mjh 3mvtxm ne07oiatfe,a fh+h 7 84/chrome wire if it is connected to a 12.0-V battery. m7dmfm7fmnt,n 30hvi t8enje+ xh+o/0h4aa0(The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0 c0 374d euiwsplm. What is the voltage drop along its length whend e 3ilwup4s70 it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrom) hy ccsux0+ggi,(q. mqa qn zy72b3+je wire 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 (rn/erin* *lodi8c 8g( 3kqw kaz)8uu4e 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 resistance ofc m)5ltddj( 5w8v+s zy03lj3cxscb, e $18 \Omega$ 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 resiz*bv2hs,3vbtug-6k/l 7d3u;(i- mxe gxerqy stivity 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 d7y- cwh437 8vyml qrw/mz zyv)etermine the melting point of indium. The resistance of the platinum wire is -mz yvy7wvzq/w7l 8rym4)hc3 $2.000 \; \Omega$ 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 throughhi0cm5q5jxy32t f,z qu tr5.u an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it dr)fr dyvl3 hkg18gac( 7aw?

  A 150-W light bulb running on 110 V draws r(xf uupod ;2.fv- .yuhow much current?

  What is the nominal resistance of a 100-W light bulb designed to be used azfh- mdhplzy37vui8-6-+ smin a 12uidz- -ph-v+fz6 3 h syl7mam80-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating ele7bitbn2gcp4dcll/k-i a w w 2v3sa;72mentw v sw-;3b2n dlkci7a/4gbaitl27cp2 ?

  A 200-W resistor is ra8 p ya8w-f8tp*kpzl/jicphsg p b1-467re.ss ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rate 24-w+gjohrj dd at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is us6ecxetu9yt 4( fpt ,(h h)dn9hed at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. 4y).z3 ;mwig7qnio,rtiduhlx; 6h j 8 If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. b6i ;0jb1aojjrdwl 30l;t uq7 What is its resistance?

  How much does it cost to opev /ebm wh4nzc/m56a3frate a 25-W soldering iron for 8.0 hours, if energy costsb4m5zwmevn h63 af /c/ $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 houj t7e5vyunr:9rs?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much h*(q qyv. f gfd62b;epzeat energy is producf*eqq b;g2f6y vzd.(p ed?

  A battery is rated at 12 V and 160 dl/z8; qcdwgk8 sfgy-play r:m672/ rA-h. How much energy does the battery store?dgsy;d/q78-/g rr ykcfwlp6:8 2z lma

  How much energy does a 25-W soldering iron use in 8.0 hoy0uvfvx *h6u 1urs?

  A 100-W driveway light bulb is on 10 hours per day.lxy lr*p/b+j 2 Assuming the power company charges 10 cents blxr+*p2j y/lfor each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned oyl*b/ xi/xag:ce45a8+kw z dqn 8.0 hours per day. If electricity cos+ia w/5kd qe*bc8a/zly:g4x xts 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of run(jxdsh ( w7u:ining a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connecthw:((ujdis7 xion 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 drier operates on 240 V and generates h;;;iax:aec f0p ;g vu2j:9tl 6esxs aieat 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 repair9g6 sa0:tixv;j;:s e e2 fpilx;;uaca have on the power dissipated in the heating element?

  14 A of current flows througb r0ic,: i2qhqkv7/5o bgm)ct h $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs b)uw)m bzh+l ,*g45dk 5xk8a *vpgfyr $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 hphh87okmn ;qodsl:e (7 has 60% efficiency. How much current does it draw 7e( 8 mqs:ohhdl;7onkfrom a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms currel)zbjyjmpt w e h;g72tw4 a11.nt flows gwj1)lh .;12jzmpw4b t 7 eatythrough this device?

  A 500-W device is connected to a 120-V ac power source. Whatb.kx0 npi fe56te 2qezm 4qr::a;d j:b peak current flows throug 0r6e pm nfiqbbk 2:te5azd:x:;. j4qeh this device?

  A 500-W device is connected to a 120-V ac power k:i:s8xg1) byshsz9 tsource. What is the peak voltage across this devicesx: g):8 istbzs9 1yhk?

  The diameter of a copper w7-b vxg6pb(hz ire is 0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is t7g(-bx6phbvz he drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)