A device that produces electricity by transforming chemical energy into elsq8;lb;msyw/)gi (vi ectrical en/)s;(w8gy biivms lq; ergy is called a

  A car battery

  The total amount of charge that passes through a wire's full cross sec vej2tbet pzs0 )1653;mdulq xtion at any point per unit of tim5p msj t;ldut 3e )x6vq1ze0b2e is referred to as

  The direction of convesbqxvn 2w( 8dq w2-j5z4bhrfj .6toq5ntion current is taken to be the direction that

  A coulomb per second is the same asf d4.-lyzu,v s8)6eww tykg/w

  Car batteries are rated in "amp-hours." This2i/gv:v,n vnk is a measure of their

  The resistance of a wire is defined asvo7ada( t1:lz8kjq9b 74 fbhj

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

  The resistance of a wiv()tnrq+2v c cre is

  The resistivity of a w +v/ us9f. adzroa l5lo,q.1uwire depends on

  Which conducting material hqst, bf6z 3a;c.4:3 p;rdak *wjy tkgmas the lowest resistivity value?

  Consider two copper wires. One has twice the length of the othl 4)2 tjn,vtkdp,j3uler. How do the resistivities of these twot, ktl 4njdu2lj,v3)p wires compare?

  Consider two copper wir:19a- m2 li/tuemuwcpes. One has twice the length of the other. How do the resistances of these two wires comparcu: wl-tei/2mapm1u 9 e?

  Consider two copper wir;*sfn vm5ly6 ves. One has twice the cross-sectional area of the other. sylv* ;6nmvf5 How do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twiceyf-ogoq nw g7d om*d: b4mn36( the cross-sectional area of thgm4d-o*(oo:d6mbnwq 3fy7 nge other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is y6ssi/odt; c 8doubled. By what factor does tsi 6/oyc8d;s the resistance change?

  How much more resistance does a 1.0f( -lsbd(4lgm cm diameter rod have compared to a 2.0 cm diameter rod of the same length and mbd(gl(-fmsl 4ade of the same material?

  The resistivity of most common metwzm (5hc zj;sak*,3 kqals

  Negative temperature coefficients of resistivity 9*1w j3mntmai

  What is 1 W equivalent jx)kr2va ;,7py )bs rkl8hdxhewl-/1to?

  A kilowatt-hour is eq+n m0on1u8pe z rzo 1fplt,n.4uivalent to

  If the resistance in a coy /rjl6j:v6itl9qcncos5 /.knstant voltage circuit is doubled, the power dissipated by that circuit wilct r5cy/llkv j .n696iqj:o/sl

  If the voltage across a circuit of constant resistaq+i:p d v.bbfx/xkt ewpwf1-9n-p9k *nce is doubled, the power dissi* wvf- xt dbn1kwpkq9:pb+ix .e-f9p/pated by that circuit will

  If the resistance in a circuit with constan14aw;rnmyx + ut current flowing is doubled, the power dissipated by thatn 1wmu+r x;ay4 circuit will

  If the current flowing through a circuit of constant resistan 8b4ypdzl45 :+kjdk gxce is doubled, the power dx4b :8k4p ddjk+zy5lg issipated by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what percvwwe,b+gt *2:v xgd- fentage is the power on a resistor affe2b:g , dw-gwetv*+vf xcted?

  A current that is sinusoidal with respect to time is referri 4uwl1ygwfit /4)g3*k8cshw ed to as

  Consider two copper wires each caq e4qwjr1 9;7bpkhxl ;* vnev;rrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocw*vv e hbqx;n4r;ql ep 71jk9;ity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes esseqre8*nm8fe 7fntially zero at very low temperaturefnrq me*e788f s are referred to as

  What current is flowing if 0.67o 35ie ym*vat7xe0a.xxb; f,b C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus ineii5p0/ gbf:u 2.0 min. What is the average i5gi eubf :0p/current?

  How much charge must pass by a point in 10 s for the current t*9(ckntk op.;,5xc8a;rd/z kx e mc hso 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 j5y:;ho .qp reiuf6rd ci:kcd 2 g;t;,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 on for 10d zrg khlji 7*5p4j*oh+3fq;i min. What is the net number of electrons tq+z7gk dl4 i;jp3* 5jhfo ir*hhat have passed through the coffee maker?

  In an electroplating process, it is desired to deposp b*yb*es- kwem58+n xit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the current bee s b*8knep-b+my 5w*x 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 k.ad x99:x6c1fl jhhfft)a /c cause 4.00 A to flow through a resistance of 330 W?f.l: c9axhc 1djak x)f6h /f9t

  What is the voltage across .n xy4s 4qhd4x5obj8ua 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is co.vy y u 7zz030rv6(x/ ao8dkfse+av gunnected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its r+ q.azk0vaff 4esistance?4zavaq+.k f0 f

  A 12-V battery is connected to a 100-W resistor. Howo1pzhm m )a 55z6wb+rk many electrons flow through the wir+b)ho1r mk6 5zwaz5pm e in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0. yu(8w 0yrzznyl1x iz:kd)po.f8 -lr.40 inch? (The resistivity of copper is 8u ri:w)ln8r.(ky10d -ozlxpzfy .zy $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diam v6 ii0by9(0 (/oyildbfzzwi(eter and 45 m long, if the d6yi9/bz(lizvwyfo (ii (0b0resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistio j56fl;rbfc bgnn8 ;.vity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity0dzkmb xo:3atv(*4di $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resz -m-hu 9exc l0brc*w-istivity?

  Calculate the current through a 1064 q31 pk yygj -j(lnju,*hihwwz7ng6.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire i-i7 6lkj3j*hyg hjp(wn ,wqun1g6z4yf it is 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 cuuf+o+1 h-rsem long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is-e hr+ su+1fou 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 jv87 xt457ug gueskj 3f*3mlc 60flqb 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 (r,x/4x *b74wotrn.ibz1ic ov iesistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistanc807vhuqy6hyy e 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 platinum jeij9:v20zf bxf8v( k 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 po9n(dmdjcpxh1 8r jr1 5*r2iltint of indium. The resistance of ther1r8x5hr9lmijc2 d(t *p 1nj d 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 throughpo.zh:u51f ic an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rateeixa64 68qb m8vc 5kzbd at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much currb kpx5p 1jkf6)ug 26gqent?

  What is the nominal resistance of a 100-W light bulb designed to be used i:jd (;u7 wmwmin a 120-V circuitwmw7jimd( ;u :?

  A toaster is rated 800 W at 120 V. What is the rv qe5;f6cy gl,esistance of its heating elemenlfc vqy5e6;,gt?

  A 200-W resistor is r- .q, lkxy7hei.v pmc7o(gi0h ated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated ataszs7:og,(na4nqqi d67 j7 yh $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it drfnra 7:.ju)blwrttcnx; 1*k/ aw?

  A lamp uses a 150-W bulb. If it is used a05z1q5nmbpv;u szh, haad 89at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. Whap7moc4 s.bfwpav0 ;7kt is its resistance?

  How much does it cost to operate a 25-W soldering iron for ,e3hbf 0ixe-o1s3bzd 8.0 hours, if energy coxeo-d b0bzi3fe1 h ,s3sts $0.08/kWh?

  How much energy does a 100-W ligh 0m( peqepaek v1ib-025ov9t mt bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-lll v67z jwj;(V line for 2.0 hours. How much heat energy is produced?lll6(;wj v zj7

  A battery is rated at 12 V aaday0 hi:y+1 gnd 160 A-h. How much energy does the battery store?g 0 yh+adi:a1y

  How much energy does a 25-W soldering iron usq ln.pf;whb *0g) jo/ve in 8.0 hours?

  A 100-W driveway light bulb rb +(idzxh +m9is on 10 hours per day. Assuming the power company charges 1hd (mb9xz+r+i 0 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is tohflfnlmf1zx k 3qj i9/)9 (1w ;sxsa:urned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annualk3 l:s h(j9a xxzmfnw/;1sofl) iqf91 ly?

  The monthly (30 days) elcfi:pccj ew8r 36-ut4ectric 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 much did these items contribute to the cost of the monthlj f icwt:-rcp 6c3ue48y electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates.n(1/9kv )rizd3fk kp s ft;sv 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 thetp (z)1s/ski.drk fvvn3;kf9 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 t2jqe1(xhyh u -hrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost., lb.xaafrz9 s $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*4e)iaz loib: dv;i7wzs4* xh ):fmuo.0 hp has 60% efficiency. How much current does it draw from a io:)sz: mefo**dxwv 4ibl ;a)z4ih7u 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rsry 0j9z32p. iql :hkums current flows th3lhri0zkj.y p2s:q9 urough this device?

  A 500-W device is connected to a 120-V ac power source. What peak current3ocghzs 2+;nzyx9e wg j6(x:svs, 1n m flows througw:g my(x exncnojsv2,9z h1s+sz g36;h this device?

  A 500-W device is connected to a 120-V ac power 1b.sya56*1a zqg ltlb82mkda source. What is the peak voltage across this de 8*qysbmb al5 6a2z ta.1l1gkdvice?

  The diameter of a copper wire is 0.081 inch. The maximum safig .p;o:d ;raje 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 number of electron carriers in one cubic centime:jpog a r;id;.ter of copper is $8.5 \times 10^{22}$.)