A device that produces electricity by transfew.,45p mq5zvw6hn zt orming chemical energy into electrical energyw5z,q6vp m n45.e tzwh is called a

  A car battery

  The total amount of charge tk + gul( 2fm/f7,iswxu4f+si o ((qmrmhat passes through a wire's full cross section at any point per unit of time is referred to 42 s 7msgmxuumrfli iffq(,++((/owkas

  The direction of conventi 8v2h ;zm)hkhkuju,yi/5.lkz on current is taken to be the direction that

  A coulomb per second is the same a oxzcwz3lvnt (j:g+642cmy7)r j ;iycs

  Car batteries are rated in "amp-houlk4sa*84s3laoow x8e /-qcib jnc:n*rs." This is a measure of their

  The resistance of a wire is defined8smn ym*l/e jq arw;(1u3mzp; as

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

  The resistance of a wl: vpjj /-l/iyr :d3yhire is

  The resistivity of a wir p )33bvel:zcne depends on

  Which conducting material has the lowest resistivity vwi :hd .,ynthz/8ia4oalue?

  Consider two copper wires. One has twice the length oflo0c*nrv n79-7(sfacw ;8qdsv; om kt the other. How do the resistivitsnnva wtc;0d;-r vfc *qo 7(9km7l8osies of these two wires compare?

  Consider two copper wires. One has twice the length of the other. How do the(z8iz)iqy/ f ;h9c:kesf ss1r resistances of these two wi: r(q1e szcz;/)f 9ysisi8hkf res compare?

  Consider two copper wii-9/3 du i n,* mhjxk484bv/aeofcbtsres. One has twice the cross-sectional area of the other. How do the resistances of these two wixts-fjhida9mbvok c8 4e/b u n 3*/i4,res compare?

  Consider two copper wires. O)pqx 67efqjfwr/ d*i0ne has twice the length and twice the cross-sectional area of the othd xi/06w7ffp*r )eqj qer. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factorozwidwv/t5 fb *dsg/ g 2(2v(v does the resistance changv//5g(vwbs od2 wf ( gtv*dz2ie?

  How much more resistance does a 1.0 cm diam4jbjr9ae/yh5orc l uw 232 bq7eter rod have compared to a 2.0 cm diameter2 cerj yuw4ajo hl5b97q2/ b3r rod of the same length and made of the same material?

  The resistivity of most comm3 ; vgh izxaj:0 32 ol.nayf40eou:5rxusl1uxon metals

  Negative temperature coefficients o:*uw2 u,yr*9bhxcbl qf resistivity

  What is 1 W equivalent tom-t.5 esp7vvk+phx/r ?

  A kilowatt-hour is equivpc7cm +d.c )fdalent to

  If the resistance in a constant voltage circuit is do8qaph ;kl(7zjubled, the power dissipated by that circuit will7;8jalk(z pq h

  If the voltage across a circuit of constant resistance is doubled, the power dzw i)fvvvxp)r8b)gdhbq3 2.m 6+c w0cissipated by that cbq +wc2 rz)fm0hvg6 xwd3cbv)).vi8pircuit will

  If the resistance in a circuit with constant current flowing is doubled, tb4g2:pz3f) etvsh0 tzhe powe3ht:2spfbz) 4ztv 0e gr dissipated by that circuit will

  If the current flowing thros6/p p ,yu:fmcwz twe,n-7uj 2ugh a circuit of constant resistance is doubled, the power dissipatu,m:t z/ u6-wsjc7,wpynepf 2ed by that circuit will

  During a power deman cbezpl9+p s(i gsn2rk1v*n9/ d, the voltage output is reduced by 5.0%. By what percentage is the power on a resistor af1p+blgi* c rkz9v2ss/n9n( e pfected?

  A current that is sinusoidal with respect to time is8qt qb . 0ale 9s/8kaq-)a*kxniwwiq 8 referred to as

  Consider two copper wires each carrying a current of tbw )da-5lzd bl4+a 0dn7szq13.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to t+d n0z 7 1sw daa5-zlbtqb4ld)hat in the larger diameter wire is

  Materials in which the resistivityw0st+:92sa40bnh yiflqow4f becomes essentially zero at very low temperatures are referred to 4tab0s :24 fnihwo09wsl+fqy as

  What current is flowing if 0k mza9r.o/dv6pow (j2.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes ths/wyx4s1 fj 2xrough an electroplating apparatus in 2.0 min. What is the f2xyxw /s41jsaverage current?

  How much charge must pass by a point in 10 s for the current to be 0udku9yd(pm c ss4 3w s:4,ro+l.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 wf, :+jdctisl( v1d19gf:i ifsmh/8 w$4.0 \times 10^{16} \; electrons$ 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, hbjjclnk7e ;8s8ir, mvfv3t 65as been left on for 10 min. What is the net number of electrons thnvs6, iecjv b 75t;rl88m jfk3at have passed through the coffee maker?

  In an electroplating proczrg3 q1of.oe7ruv8 53s6,wlwg /oycqess, it is 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 to deposit this much silver? (The silver ions are singly charged, and thg,3rwrzq73w/ e.g65qoo1luv c 8s oyfe atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow thro,t*c t ;sopwaxc7 z1 c:fj5g2fugh a resistance c1p;wfx2ogct5sf*t z: c 7a,jof 330 W?

  What is the voltage across a 5.0-W resistor if t*dd +*kv:gy/ q ce5t 4or1ycnuhe current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curnye70orz pl( 0llv9)s0u 7cexrent will flow?

  A light bulb operating at 110 V draws 1.40 A of current. 7iyxl9 f,3fcj What is its resistance?f,ic l9f3y x7j

  A 12-V battery is connected to a 100-W resistor. How many electroj,x8itc3+rxvk2 gr b ,ns flow through the rtg,kbc8+jv 3x,xi2r wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter d95)ubzeq .s s4e0o yuch ,)jc0.40 inch? (The resistivit9co 4us )jbe5yed .chq z,s0u)y of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1 q93sr x8xrq9ok) un;qhr/h2o.0 cm in diameter and 45 m long, if the r r8 r2kornshux;q9x)9/hqq o3esistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper *e*5mj8h qpp owire (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 u:+px p( s3yck(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. What is its re:5*a*yprgg llkvmw 1cqq5wg;9j if9 +sistivity?

  Calculate the current qlqt* 7e*xulhw *6q5 0qs3j jb-- vc.f,tteokthrough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of ni*3k*l-v uwqttsc5*eh-o qt7j,flq 06xjebq . chrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cros;twt+dmngg 0 0s-section, 1.0 cm x 2.0 cm. What is+;wg0 dttm0ng 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 radius of 0.50 mm and a resistivity ofhrh ss:5kzm /3c6w5a)6 kh apw $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire v6qjw3 f ati,2w2 tx/o(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 db:pk9 1p5cg24uk kppa mx9d4 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 resistivity of plarig9-fobjgx-8 s4m :d7x)gl v tinum 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 awhh2f+gub0 c.2homv0bzf b -7u ;xe*the melting point of indium. The resistance of the platihe.b;+w 0b 7-b* 2ofu0xcgv2 hazfmhunum 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 :uas0cxt0mmrq3 ( xyp4( sd5nan $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cur7 x.gag(s md(e3gs,aj(ipxgvn( 4zu i .;on:lrent will it draw?

  A 150-W light bulb running on 110 V draws how muc v+re2e(n,uyp4u)f e rh current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a ccm6 d q7 8kjf:e+zdw:120-V circue8f d7+wczkd: 6 mcq:jit?

  A toaster is rated 8r jp)ziaw0bl2/cil 9q+k)a 64g-nb kc00 W at 120 V. What is the resistance of its heating element? q)nz4 g )bairl9+62b 0/i-kkpcjw acl

  A 200-W resistor is rated at ,j4(y;kywd-h( fzc4k+ benvd$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rat*l xvj/n.bv rx tcb*j6+wd xc7zfr030 ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 ,r;eqpw+d:cs V, what current does it draw?

  A lamp uses a 150-W bulb. If it is us8l0u npci1y m9whaysbp zl;l)) j;6 (led at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its rluvn)ps0jrsb38z2l65 4:trlm-n p6 pv qf e9tesistance?

  How much does it cost to opera* a.a 6scu14b r tc/lgogvo+4kte a 25-W soldering iron for 8.0 hours, if energy coso1 44sg+bklr t*oaa/6.gvc cuts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 h 7r-hqi190pjenn-) too3kdjo6*ea tjours?

  A 1500-W heater is connected to a 120-V line for 2- on e2c5noio2.0 hours. How much heat energy ic2oo-i25 enno s produced?

  A battery is rated at 12 V and 160 A-h.p8abdp+ )5:eew9 ndg;qest7 h How much energy does the battery store?:;9 te8dn5+ dagbpqee)wh 7sp

  How much energy does a 25-W soldering iron use in 8n4ix7na*f-t7l xka+c .0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the poweru*aq mc2.m04o4nr c e7,yysok company charges 10 cents for each kcy anqk .oyrs44ec*u7,2om0milowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. 0hrv-qmk*p-/krnt0h/3sz6uelh b2 o If electrics l*b3 vz h0nu/kpor m0eq-6 h-2htrk/ity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the co4d hhjzb( l86:tey3t ust of running a central 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. How much did theseu z83 ejb6h:dhlty4(t items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in1 2p-u.ukmrfo an electric 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 km2fp -.1ouurthe repair have on the power dissipated in the heating element?

  14 A of current flows throughc nu7,5c; 2-dpzepzcaa-zawd5 d)8s p $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs 4k:uj 1aq6h /z wo r6t yg)a;y(vjagf*$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 djwo06z of -v;much current does it draw from a 120-V line? (z 6-v;djwofo0$1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power sobe;)c mm4j2(3t87 vy qzma xtuurce. What rms current flows throug)tz;t ba7yqm jmvx83ucem( 42h this device?

  A 500-W device is connected tl g(f- jwv -36lsreem:hul0, yo a 120-V ac power source. What peak current flows through this :l slvj6lg hu3f-( emew 0y-,rdevice?

  A 500-W device is connected to a 12xp-sda7 b)x 8xu;+ ;fcuj rbk,fle6b4 0-V ac power source. What is the peak voltage fd-;+blcsx7x8j;p6k 4beub ) ,faurx across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it caio45 5*hhvw7qjf ;sr tn carry (in order to prevent fire danger in building cof*jio 54;hqt7 vwr5sh nstruction) 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 $8.5 \times 10^{22}$.)