A device that produces electricity by transforming chemical 0lbp/)f/k i1k,) ucotkta7y 2+xiuf+cld* bo energy into electrical energy f t7bdlic l+)21u+b/utk apc fx)k/0o,*iyo kis called a

  A car battery

  The total amount of charge that passes through a wire's full cross se* )2shk+e )ca4h0igay.td yewction at any pwiyehd4)cas.ak0+g2t e hy)*oint per unit of time is referred to as

  The direction of convention current is take b:ppr yrx/f7*n to be the direction that

  A coulomb per second is the sambsy f;- -hm b98zo/ykme as

  Car batteries are rated )aia,i,e 8fxein "amp-hours." This is a measure of their

  The resistance of a wire1qj -pwsba /y(n u.jg6q 3rka( is defined as

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

  The resistance of a wjhfr 8i s dx)8btw6/7f.2yvjqire is

  The resistivity of a wire f0 1j .mz u. 8qn-ye9dcoczw1idepends on

  Which conducting material has the loweswq*o6kro *e,9p2wxhz;sh (y+c0sr jtt resistivity value?

  Consider two copper wires. One has twice the length of the other. pnc pd x15 yif-2z4sh)How do the resizc2h y 45fsnp-dxi 1)pstivities of these two wires compare?

  Consider two copper wires. One has twice the lengtdms),o:ppsr s-r98e s h of the other. How do the resistances of these two9prom s:s8dsp,)r-es wires compare?

  Consider two copper wires. One has twice the cross-sectional area of t l6b* vsebc*u+he other. How do the resistances of these t*elb+*u vcbs 6wo wires compare?

  Consider two copper wires. One has t/rfyy7.b-p u(f ar wu.wice the length and twice the cross-sectiona(y7 .-/f prbufruay.w l area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By usqepy qguul7h*-k8by-:55 g what factor does theku- 5gh-pyublg 87y*5q :qsue resistance change?

  How much more resistance does a 1.0 cm dih81a 0k yw9l. 1hzji2f7obxmiameter rod have compared to a 2.0 cm diameter rod of the same length and made of wyljf h1i8om .1 hx20 kazbi97the same material?

  The resistivity of most common mq ,( l+ttu;dkc6daqi1 etals

  Negative temperature coeffi v/yu*qe*yb p3ogk8e o /y(y7acients of resistivity

  What is 1 W equivalent -sv -9l1kzayp to?

  A kilowatt-hour is equi1dr5ezn 92r3e v8pge jvalent to

  If the resistance in a constant voltage circuit is doubled, theoi44r; bhsd04bg4f id power dissipated by that 0fhdb4i4r bo;sg44idcircuit will

  If the voltage across a circuit of constant rd f;x:tjygv ;-yl;li.:bn+zc esistance is doubled, the power dissipated by that circuit ;y-c +f :.b;jdlv ;liyn:zxtgwill

  If the resistance in a circuit with constant current flowing is dy1e)dx3. xc44l bwiid 0ghv b7oubled, the power dissipa3xx 0 vhl.1i4wyd 4id b)gebc7ted by that circuit will

  If the current flowing through a circ7dig p n8l;c2vuit of constant resistance is doubled, the power dissipated by that cirn278; lpcig dvcuit will

  During a power demand, the voltage output is reduced by 5.0%. By what percenx chg65k6o 6wj7z,ofg tage is the power on a h7o6jwoxfg6 c6g5,k zresistor affected?

  A current that is sinusoidal with respect to tit1 z jgw-)liq0lpull- -or*8wpq 8m j:me is referred to as

  Consider two copper wiresaw34cjp8 pv 4n each carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the driftvp ajw4p4n38c velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivitb- gdp ijz 7p4zrkx9()y becomes essentially zero at very low temperatures are referrezikpjz )bg9(4rp 7-xdd to as

  What current is flowing if 0.67 C of charge pass a poi0h(qrwaad nn m*r 658ynt in 0.30 s?

  A charge of 12 C pas 9)gfqdvt)zsio +tb/.ses through an electroplating apparatus in 2.0 min. What is the average cu9+ )v.zsgt/d)fqb tiorrent?

  How much charge must pass by a point in 10 s for the 4g pc:tga4p) scurrent 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 d3u3-a yt7c blwxe1s: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 left r;tgt 74 w/ffm0bvs0 4zjey t9n ro59mon for 10 min. What is the net number of electrons that have passed through the cof; frrn 0 y v/9s9mgoe7tw5tbm tfzj404fee maker?

  In an electroplating process, it is desired to deposit 40qcrhk7q1hi x7voi me 4, w;b;: mg of silver on a metal part by using a current of 2c;qx1,i;7k7 4e :rbohvim qhw .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 108.)

  What potential difference is required to cause 4.0sn: gsb m1 7zji)z4hw10 A to flow through a resistance :zwmh)7z ib4n1jsg1sof 330 W?

  What is the voltage across a 5.0-W resistor if the curre mgd; /ktur/bg)jnv /)nt through it is 5.0 A?

  A 4000-W resistor is connectedrnrneb: 34t, rpd8)h x across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistancn9r(zk9o03qp da sr5h)h mse1e5mnd(rpq0 99he 3 1)rsakozhs?

  A 12-V battery is connected to a 1+.if, tn k z,7epi 0obg)kl,sg00-W resistor. How many electrons flow through the wirez,n e0) gb,gof.li skpi7 k,t+ in
1.0 min?

  What is the resistance of 1.0 m copper wire of dgtxp(dsy 6l- 8iameter 0.40 inch? (The resistivityy8-td(g x6slp of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a rnp gi;0;xb8 ; rjb(nkant.o+circular rod 1.0 cm in diameter and 45 m long, if the resistivity t8n;no ip;(x gabjr+;.b0 krn is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resn ,svk 4rn(i o5+bovm7istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wireea5i iq5b; .nk/jki2l (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, measdcmt80q/xhl hq0 5k.+v 8qib xm0cyo (aq4q2 tures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 2l5ore ,fj. xo22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-rool2x.e, f5 jV battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and b0kfp9sp 4((hwf hh+ lof rectangular cross-section, 1.0 cm x 2.0 cm. What is the vlh0ks 4f( bpfh+ph w9(oltage 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 069xi)zsh jh dh5uf flvg2*b*ty 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 :(og; -cdholrwire (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 resistl a9dw db)/45s p2t.bno4cfvq ance 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 coefficienmekce/rceh 35:*qs2i2yw w gc+ ja4(rt of resistivity 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 indiuen: bija 2)m.bm. The resistance of the platinum wirej: bebi .2n)ma 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 thr clv10uy5gca -ough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rat;jz:-,it:ctffbq tfk;r qbf.+ aj(v1ed at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much cub.c4h4ixz2 gvk-:a ha rrent?

  What is the nominal resistance of a 100-W llf32w:w(d-mk ew n;bbight bulb designed to be used in a 120-V circuwflm(k2e 3;dn-w b:bw it?

  A toaster is rated 800 W at 120 V. What is the resistance of 2th,iy ywz; p9)4)gy emdjpv*its heating elementv,) i2pj4yywdh p)tg ymz;e *9?

  A 200-W resistor is r 9 t teran3m:/aam(l7cated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rate 9n5rt0n ueuxipod30j /v:53d7aqm ra d at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is4ydv xn l9x3gz ze-x-; used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, whatll2(o9dt27,x qegq 9s,phsyj 7 b scxd (kos8, is its resistance?

  A 25-W soldering iron runs on 110 V. sx8j:iig ;rw0What is its resistance?

  How much does it cost to operate a 25-W solderi;ufdx 4( + ,8;pgwjevq5unan7hiw x+ung iron for 8.0 hours, if energy costxwnn8jd u+(4+ ahgpiv5uq7w;u e; ,xfs $0.08/kWh?

  How much energy does a 100-W bvj+ -nkj*7res :kh j09n1lhm light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat-w/sorx968 zt-pba f1t-q(hxy. vyyo energy is pt1 o(yyo6y -rwv qhz sbfxxa- -p9t/.8roduced?

  A battery is rated at 12 V anvle zi 3t6 hc fo)q242vzbk(c6d 160 A-h. How much energy does the battery store?ozb62tfvzqc 3 v(ec l26k)4 ih

  How much energy does a 25-W soldering iron use ee9e5 gbox+9bin 8.0 hours?

  A 100-W driveway light bulb is on 10 hours 7:f v5h,nabh*)d vsnuper day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, ea,: 7dvvsb )nhu5f*nhstimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If e0 :,6kkx ffjs 5;uc9kf )agfyllectricity costs 10 cents per kWh, how much does it cost to run the6x;fc5l9kk)y: sfk gf0,j f ua computer annually?

  The monthly (30 days) electric bill included the cost of runningvy *byub).8b z a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 zbb*)yby8 v.u 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 generater)80 ns ib5k9l o wzxc--9sfpzs 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 trzco-0iz bp)sf8 995 lkw sx-nemperature 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 flowzw3s cjlwruk.c35kkd/ b3+b9 s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsfq10y ,wj e6w2nn7tht $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 ofb) /fvj (iv(6erqn3jc 2.0 hp has 60% efficiency. How much current/3ijfjvvreb((6cn ) q 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. Wha;e4egx :ar p:rt rms current flows throx: r4;ee:gar pugh this device?

  A 500-W device is connected to a 120-V ac power source. What peak current floo,wa s 4n0,jnq-d +(n q*,n3k odlrbknws through thiakbwd 0- 3k l* (d o,,njqq4,rnnn+noss device?

  A 500-W device is connected to a 120-V ac power source. What is j5xbu+p/7py mnnm6f,tg/ y0ythe peak voltage across this dnu7y / tn+6 mjp/5y,bf pmyg0xevice?

  The diameter of a copper wire is 0.081 inch. The maximum safe current i j1kc08m y-lndt can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of th01lnd 8y-cmk je electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)