A device that produces elecjo8)2jh .w2cn i4nscttricity by transforming chemical energy into electrical energy is calledic ocjt82sh4 n)w j.n2 a

  A car battery

  The total amount of charge that passes through a wire'q;up20 m 0-w4mthrvt cs full cross section at any point per u ;mq4h r0pm2uvt 0tw-cnit of time is referred to as

  The direction of convention )1hlrby(y: (ct+/dk 5qaky rn current is taken to be the direction that

  A coulomb per second isot1k54pshnez 7 p6/vw8k* ly a the same as

  Car batteries are rated in "amp-hours."bnjrj 1gu7xm) jn 0x2.fo:lq8 This is a measure of their

  The resistance of a wire is defindvn: gm.7ws ;e+d t,ffed as

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

  The resistance of a wiw, s/suzh ))yy2t /1yea1edoere is

  The resistivity of a wire depi16cd)ei6 ta cends on

  Which conducting material has the lowesc)adt4 v8jn4td8p 0yx t resistivity value?

  Consider two copper wires. One has twice the length ofx l3lh*vw;m1i+i2 wvd the other. How do the resistivities of these two wires w3i+di2lx * 1mvwlv;h compare?

  Consider two copper wires. One has twice the length oko *6ivjo b)6ql3cfe k 9w1)xef the other. How do the resistances of thwq6v)3 19oljb6cee* f i) okxkese two wires compare?

  Consider two copper wirz8rh;c5 fkl t-es. One has twice the cross-sectional area of the other. How do the resistances of these t8k-t;hrzcl5f wo wires compare?

  Consider two copper wires. One has twice the length z q/rp67z0 1m8kylbz w;a nt)tand twice the cross-sectionalb/pat 1z; wqy7t8z r 0)kz6mln 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 what factor m cpz:sk:lg8-does the resistanclkcsm:8- z:pg e change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cmc)g jgs/ke .s 5m+jd xn0:ew1l diameter rod of the same length ankgc s.)e j 5n0/ :jsx1wmdgel+d made of the same material?

  The resistivity of most common x2hk nxn +(kb7 / doe;xuj1ng8metals

  Negative temperature coefficients of resisti.;il 8mrkm*a rvity

  What is 1 W equivalentorx w c 25a.0f1a.haxt to?

  A kilowatt-hour is equivalent nr b48 tw/g*;i tlbfg3gs*4fw to

  If the resistance in a constant voltage circk- o6jg ym*+epmj7z p2uit is doubled, the power dissipated by that cio7mp 6*jgpj +2ky zem-rcuit will

  If the voltage across a circuit of co0)-ta6,rhsn*bv bxp9 zkh x99 zm0bxonstant resistance is doubled, the power dissipated by that cirb0n*xxzh09m)zb ,obvhpk s9 ta-x 69rcuit will

  If the resistance in a cirdrsk nk2a a, 7q-phs86cuit with constant current flowing is doubled, the power dissipated by th d 8pshs6n-rqk7a2k ,aat circuit will

  If the current flowing through a cirf ge3qifvo8o*zo7l+ u.;m3 v ocuit of constant resistance is doubled, the power dissipated8 zgoqoi7evfuf+.*v;olm3 3 o by that circuit will

  During a power demand, the voltage output vey ggh/c(an f* *x15)i)dkhbp w4 ze)is reduced by 5.0%. By what percentage is the pow5 wev* dk)14he*gn py)c/zg bf(xiah)er on a resistor affected?

  A current that is sinu 9 ;a3h 6 yuuqma;ph(rc-hl2qhsoidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire hawfsj. a r:uh7*s twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wir*f.s:jw7 rahue to that in the larger diameter wire is

  Materials in which the resistivity behr1 n.(do s g-0*itlfrq1zi9tcomes essentially zero at very low temperatur *9n1 tfh(q rs g1ri-0litod.zes are referred to as

  What current is flowing *l7ehi /6erxg+ a/lwk if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes throurzik jb3z*t*+(a43kzq *xf dkgh an electroplating apparatus in 2.0 min. What is the average current?k*z*+ r( j ak3kqxf3i z*b4dtz

  How much charge must 1yyq p0vq;8zz(r :hvbpass 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 ih 34rng/z nsq8f $4.0 \times 10^{16} \; electrons$ 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 fo 4 ahibedmv) ojj6,(4wr 10 min. What is the net number of electrons that have passed through the cwi deha4j ( 6mov4,)jboffee maker?

  In an electroplating process, it is desired to depo 9vq)dzk,r r4esit 40 mg of silver on a metal part by usie4zrr9)qvk,d ng 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 108.)

  What potential difference is required to cause 4.00 A d+omad7lgv 02 to flow through a resistancmvd +o7l d20age of 330 W?

  What is the voltage across a 5.0-W resistor iwi 40ya decbiy;,;:o df the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. Whatb xgn ++(tgovc :vo);p current will flow?

  A light bulb operating at 110 V draws 1.40x nc99f+o5lm0d+ hatu:rpyz* A of current. What is its resistance?5:for n9ct9l*xmza0y+hpd+ u

  A 12-V battery is connected to a 100-W :jl*-.eiiwlztkrh 61 resistor. How many electrons flow through the wire.t i-:ler6*z ilw jkh1 in
1.0 min?

  What is the resistance w*qn4, 374oyy+senaht vq p l;of 1.0 m copper wire of diameter 0.40 inch? (The resistivity of coq v+wapy*qe7ho s34t4n ln,y;pper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a xn9: t qh nu/-zb )zo:jt0v2spcircular rod 1.0 cm in diameter and 45 m long, if the resis n2uh/ bp-:0vqz txnojt :)z9stivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wir+1p06g q d*.gz 6gg6lvnvljkre (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 (resisttjf 3s1+5kpb (ew9ks kiuv 66aivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resistivity:i ;zw3 +gfwwt+f: xjb?

  Calculate the current through a )v mwtls 8a0.k10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it ist)l vm0w. a8sk connected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangula.*, ck(tb9nzyfd3 utcr cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its ltz9cdyknu *3 .f,(bct ength 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 xnst k x 5rai;vk/c/8+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 wiru;g s- orgs7a+f oqv,p ri)5q(e (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 rl ntb2f is9( (qpqbq//esistance 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 coeffdsqcq1 e438q fqp 8ha6icient 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 indiuqq 3z lz)x8bvs-c po(du3xo62m. The resistance)zxcupo lq82zv s- dqb6 xo(33 of the platinum 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 euia fuh- /3nng8:9cbs)*vqq an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 12shh((q +f43la slist +00 W. What current will it draw?

  A 150-W light bulb runnib: vg:g6h wm*rx3z hv (s2cf0png on 110 V draws how much current?

  What is the nominal resistance of a 106e5 mhcsbzk32 0-W light bulb designed to be used in a 120-V ck 2bsc 53zhe6mircuit?

  A toaster is rated 800 W 0wlcjtr 4/ufjp;m7+so+2byb at 120 V. What is the resistance of its heating elemenuf+l74ybt20 o/j+sw br;cjp mt?

  A 200-W resistor is rated ) f99g jzqbpr/at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is raicxpwcq1g4o6 so8suh:a97 fzc j6p 0 5ted 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 it drh ux k.1t+w7 .yqqu/0r hv4ltmaw?

  A lamp uses a 150-W bulb. If it is)j h/ z1 p7df v;j2cc eu4xvv:8nu3yrk used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V.0:b(haxr z.m k What is its resistance?

  How much does it cost to operate a 25-W sold +y3y au2*b vl5:3dpxiytw(gb ering iron for 8.0 hours, if energy cosb 3y* dy(3vpiag5 ux+:ly bt2wts $0.08/kWh?

  How much energy does a 1fr-6k9 bc+kmt00-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How mucalqa wzu9vj+0g,h 8,wb c 0u(g 83facth heat energy is produced?h v8ugc,w+cuw( ,8aq fzb0lja3at0g 9

  A battery is rated a r9*hgt*o0;n jx pw.rrt 12 V and 160 A-h. How much energy does the battery store?0grpnrxw j** to9;r.h

  How much energy does a 25-W soldx 0 f *ip::q.zumtbd.yering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the powujk ffijm3mp 7(p0 1*xer company charges 10 cents for eac3i mpf k7fj(muxj0*p1 h kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monito ) k;gtr: s2nbb(4pextr) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how muc;br t(gp: s) xebtn24kh does it cost to run the computer annually?

  The monthly (30 days) electricuy5x2jm (+l:: vr2wbonitr f2 bill included the cost 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 muwym2(o2f: + :rxul ji5 nvtbr2ch 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 opera)qt-s 6fbn muhxxq+*5tes on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out qn)xuhx*qs6fm+-b t5 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 repair have on the power dissipated in the heating element?

  14 A of current flows throug7.wqalxm w,4j h $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsbm 4t7e8pdt 3n $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 h4;fsakoc pa0 )p has 60% efficiency. How much current does it draw from a 120sa)c4k0o a; fp-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connech7 dpjag6b0k 8ripzt jj+ )hu2q43o-rted to a 120-V ac power source. What rms current flows throu)8it 36h4d- rz u2j kgrpj+ 07qbjpahogh this device?

  A 500-W device is connected to a 120-V ac power source. What peak curwpad d/l3g 0bo;dv5 i1+mhd c:dk (9jrrent flows through this devic lk w:5ph;gc30mdd+d dajirb/1dv9o(e?

  A 500-W device is connected to a 120-b lasa5y06t xq01xm nn gpo7*3V ac power source. What is the peak voltage across thisq pyx6 s01 bmgnn07*oalax5 3t device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current itf 8+ik+hryfr );4z*)zo so oqi can carry (in order to prevento+riff 8 koyiq);s zo)z*h 4r+ fire danger in building construction) 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 $8.5 \times 10^{22}$.)