A device that produces electricity by transforming chemical energy into 630tc8yf z(+quvmuk felectricaluyzqvt(m uf8k +c360 f energy is called a

  A car battery

  The total amount of charg nd,uc(bzsv:r4t zr21e that passes through a wire's full cross section at any point per unit of time is revn zu2tdr (:,r1zc4bsferred to as

  The direction of convention current is taken to be the dir0qf4tyy jwe0 d4/agb2ection that

  A coulomb per second is the same afjtwdwp 7afil( d cr(+58aj83s

  Car batteries are rated in "amp-hou5yx;69wyy6l tzdr.o z/ jpp f2rs." This is a measure of their

  The resistance of a wirgp sb7trd8) ax5tvut:c z 0v5( p:ib*le is defined as

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

  The resistance of a weh fn4/jlpb0k++ b,st y,8 vkiire is

  The resistivity of a wi 86i*htbn0av4(huib+lq5 vh ire depends on

  Which conducting material has the lowest resistiv7br,ghkuf ltxh09 .3o ity value?

  Consider two copper wires. One has twice the length of the oth(s p2/kbce)(yk il2gpnh:.r : bsb7h aer. How do the resistivities of t.g (:7 ps:)khlan2/ribp2(y hbeskcb hese two wires compare?

  Consider two copper wires. One has twice the length of the other. How 3 +q;gtk ;0dgjob:j zfdo the resistances of these two w;q3o jg+dzk0g ;bjft: ires compare?

  Consider two copper wireqc-ql0l lwl:1u,x z. ns. One has twice the cross-sectional area of the other. How do the resistances of-0 xl lull q.qn:w,1cz these two wires compare?

  Consider two copper wires. One has twic fny dl-3iw *l kh8ibgqs6:+3ce the length and twice the cross-sectional area of the other. H * k:3ig6dhnliys8- qfbwlc3+ow do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubledzb 6 i+xczwd)ydm0 *u:. By what factor does the resistance changu *d iz+ :)mwy6zcxdb0e?

  How much more resistance does a 1.0 cm diameter rod have compar j(u*n3 edzh92qupd)hed to a 2.0 cm diameter u2 zqu9 hdjh*)(ep3nd rod of the same length and made of the same material?

  The resistivity of most common meto+ +jecc05kvv+b hc1oals

  Negative temperature coefficients of re uz2p4 xvsy mng0gt81109ie pt5ft8gqsistivity

  What is 1 W equivale zus* -n2,z,,ti kwynl.k uh/gnt to?

  A kilowatt-hour is equivalent tg*5 m9e;b19faz qjiuio

  If the resistance in a constant voltage circuit is doubled, the power dissipaw.xgzk(k:y y:ted by:xywg(.yz :kk that circuit will

  If the voltage across a circuit of constant resistance is doubled, t v lg2b1bgx:y;+n t1amm 7cje:he power dissipated by that circug;ebanjv 17 2 xl1:byct g+mm:it will

  If the resistance in a cu pqqb, u6 ): 0kwksx2uxut*-1wybe6 qircuit with constant current flowing is doubled, the power dissipated by that circsu-b6 qx 2qku1b:6qwxwku p y,*e 0)tuuit will

  If the current flowing through a circuit ofruewx) 6e5;v oa -us*k constant resistance is doubled, the power dissipated byu v-uxw*ar6;)koe 5es that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By249un 9zzxfmc go3t 4d what percentage is the power on ucdno24zg 39f9 tz4xma resistor affected?

  A current that is sinusoidal w vr 4xfn.gc1h8ith respect to time is referred to as

  Consider two copper wires each ca z( ld2kqwc/6o,zjq47 reow 6crrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the 6c , 2q jw rzlzko/od(we4cq76drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity be9i gkn*lwh0;lok w3s86ngaq 7qz g u+(comes essentially zero at very low temperatures are referred q 6 s;3 gi+gn8k9hk0 l(waowgu7zqnl*to as

  What current is flowing if 0.67 C o6;(jlw vhgjo wci r835c7)kwktw 3cc t2edu3 2f charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating :,okk du t9+o,kjls,.kf2rc u apparatus in 2.0 min. What isl u okoc.2,rf,k,+ kkjds9ut: the average current?

  How much charge must pass by a point in bc6zpm3ecy (er 9i a3 ilo1a*yk6z)3jcf. q;l10 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 9ku0f85v8- 3q o-lkz ttbodroif $4.0 \times 10^{16} \; electrons$ 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 lehfyo )mmlo6 *5, 2fobfft on for 10 min. What is the net number of electronmob,h256*l) ffmy foos that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of si ;fkj/9hp8i8 c50 r, eqsrfioulver on a metal part by using a current of 2.0 A. How long must the current b9 ;rrp8q0f fu5sj8ochik e/, ie allowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential differencedb pu8sixz ;a1c+3 9um is required to cause 4.00 A to flow through a resistance of 330 Wdbap; usm9u 1cz 8+xi3?

  What is the voltage across a 5.0-W resistor if t,iofyvz3f1 cb zd5bxin * ;f8z24zif6he current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will 6ud j.gk**goegn2 5il flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is itsxe:6j8 b,y-wxa* wd rj resistance?:bxxjw8 ray- je6d* w,

  A 12-V battery is connected to a 100-W resistv(hks7n6el l zus/:p9or. How many electrons flow throug:(es67lpsk9u z nv h/lh the wire in
1.0 min?

  What is the resistance y)e**+tez n hwof 1.0 m copper wire of diameter 0.40 inch? (The resistivity of co+*w hzy n)e*tepper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm v0rbta786coj*gvs6 lin diameter and 45 m long, if the resistibv6o jt7cgr806l*s vavity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resisti;w3 lldhvd3 e0vity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivz- jq bwvc5, wn6fq/g+ity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ohm ;i63+pb*cyuu:xhk z ds. What is its resistivity?

  Calculate the current through a 10.0))r;ws1 rqd0vit1 sop -m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-1vt) qoir;s1spd 0w r)V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm/9vxi enhi9khq2*d8 p long 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? (The resid9*hhxiq i8 np/9kve2stivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a ra5fd2q g- n f7+pdib0ofdius 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 *(wv 4 hqu0xx kpg+i-cwire (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 svm ;6wvr;y k a92q.knresistance 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 resistrhoo bsen:3tj ,9)im5ivity 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 detd( nhxgued6ovf1n,.ocyp .59ermine the melting point of indium. The resistance of the platinum v,c n5d o16d. 9f.upgh e(xyonwire 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 an )p/ i6-bdgclahb ayii69vcf 6p8p ./ r$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer ispdr4 (ni5wwz rjeyku.c,r4 83 rated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much currena6k lsy6q,ga /k eb5n,mmlbd8wk4)2kt?

  What is the nominal resistance of a 100-W light bulb designedxbud q6;n3l2ih1hgr* to be used in a 120132 qih d*rh6;bnxgul-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating hq3vvg(w -yhc6d i3c2 elemenhc idvw-ghq2 3 (cy63vt?

  A 200-W resistor is rated a roo.jplk( iqu000ps fuq a ya1wc2.)8t $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratvrcs w-*fp,i 1ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does ibr 7*qgjn+j l3t draw?

  A lamp uses a 150-W bulb. If icpx wbwkc(v8:tg0iu j.8fc9*t is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 g 7 usxow;s2(rV. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hoursj0.n jdqfu u*1, if energy costs0j.1j*du nfu q $0.08/kWh?

  How much energy does a 100-W light bulqz6ywxe a8ravr*8k7 ;b use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 08b2m gwaa*xsb2 j p0mhop6u(hours. How much heat energy isu s86*w 02hapxp(o ambbm02gj produced?

  A battery is rated at 12 V and 160 A-h. How much energy doesnl:7rg1gt 3wz4-bp*-mefqob.:w a bm the battery store?:b3bemgz41wql 7gp:wmt -r ab-. *nof

  How much energy does a 25-5d*+pz x3l skd28rrce W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the powetf9gthdr-2fy.- s, w lr company charges 10 cents for each k, -ff2 .wttysghr-dl9 ilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitoxl k-x+6f dfv7ox2 wy.s /ofb6r) is turned on 8.0 hours per day. If electricity costs 16fdfbxf ysx6ox-2wl /v .k +o70 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the coe ci0,lb03 opz ,k;awgst of running a central air-conditioning unit boep 0g3 w aizk,,;cl0for 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 3-pu s bo5jin5an 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 Nichj o3bnu-55sp irome 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 flowsxi mu*- ihehqitp)1su3(;a* o through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs 5i4 85z4wsmuy) bymup $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 oq /cfc kuf 6i97,pa(onf 2.0 hp has 60% efficiency. How much current does it draw fr 6qnf fcoc9/ uap7,(kiom a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is co1x;t h vgd2x:*mee+ jennected to a 120-V ac power source. What rms current flows throutv1 jhmedex: ;x+*g2egh this device?

  A 500-W device is connectedu85):nue unv k to a 120-V ac power source. What peak current flows through this dk u:nue)8un v5evice?

  A 500-W device is connected to a 120-V a+btq)vz( 5a p g7paak(c power source. What is the peak voltage acrob pg)5(p(va zkaqt a7+ss this device?

  The diameter of a copper wirbs: cfz3c6q-fy mik21e 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 the drift velocity of the electrons? (The nui c 1-3fqc6 2ksfy:mzbmber of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)