A device that produces m9k-r7 8i :sfdcxmpcmog8z:usv3o5 /electricity by transforming chemical energy into electrical imo: msuc d5v or8cgksmx-9:pf z8/37energy is called a

  A car battery

  The total amount of charge that passes throuh cz0bt+ahr.x3.,o wsgh a wire's full cross section at any point per uni habr3z,xh s.+t0ocw.t of time is referred to as

  The direction of convention current isrbm *lmb;57k db l.zn2 taken to be the direction that

  A coulomb per second g9;ifw xo5wbrr uv 4(kz/k:e.is the same as

  Car batteries are rated in "amp-hours." This iw voo6sii0aaj10n+huz(f p *2s a measure of their

  The resistance of a wire is define4s )yhq d32 aa; zbioef.)bt5yd as

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

  The resistance of a wire ie3xi kzp.mh+zm)1-aqgh;q 7 as

  The resistivity of awo),kxhhhuxt,m 0v48 wire depends on

  Which conducting material has the eya68dvw 0:m(; o oztdlowest resistivity value?

  Consider two copper wires. One has twicebp0t dsq60 8+q/awvic the length of the other. How do the rsqp0iv0 c bt6aw/+q8d esistivities of these two wires compare?

  Consider two copper wires. One hagx:;3yt f5eaokgi3+x s twice the length of the other. How do the resistances of these two wires c53o fk+gx: gxyia;et3ompare?

  Consider two copper wires. One has *me uzd9f-r 2trvy0.w twice the cross-sectional area of the other. How d2y u-0fe dt*mzr.vrw9 o the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-sectionmk24 :tq3svce k3*fs zal area of the other. How do the resistances of these two wires covzq3f *2t3 km4kc:ess mpare?

  The length of a wire is doubled and the radius is doubled. boqc(ou54dkev:*tfv 17f zw ) By what factor does the resistance ch b4zcfo5 tu e)kv*(vf :o1qwd7ange?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2nouxf-x7d71 o .0 cm diameter rod of the same length ann f7 u7o1ox-xdd made of the same material?

  The resistivity of most c b2g0bf8p;7kchqbfk3 ommon metals

  Negative temperature coefficient6 7iz59 crg:+h1 vi fhj k2qhko4v(vggs of resistivity

  What is 1 W equivalent fl 7ag+4f ou 7tprcf/-to?

  A kilowatt-hour is equivalen ev4datz t nmpr2h*ft.x7,67l t to

  If the resistance in a constant voltage circuit is doubled, the power dissipatewyrjk j/ a kf00vn13m2d by that circ k 01jvmary 2k/0w3njfuit will

  If the voltage across a circuit of constant resistance.pkh zd:k e0p03yt 8ne is doubled, the power dissipated by thyzdkp:0k0 .p 3th nee8at circuit will

  If the resistance in a cr6cu4 0/h- rg7pnl4avwc i.nyircuit with constant current flowing is doubled, the power dissipated by that circ 4 hlprr0vy/7 n6wgcnaiu.c-4uit will

  If the current flowing through a circuit of ,b:i /wawye 8dconstant resistance is doubled, the power dissipated by that8/ ew dwyb:a,i circuit will

  During a power demand, the volt)69hes2 a cdbvb6d+kwage output is reduced by 5.0%. By what percentage is t skb2bh v6)9 a6weddc+he power on a resistor affected?

  A current that is sinusoidal with re. 4tm6udh4v fgmugv48spect to time is referred to as

  Consider two copper wires eac) a*awx. nff: jo0m4e328yzi j gak+emh carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio jmfy)femnj.4e0i*23 wa zg+8:a xkoaof the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity become6a t.a 3twd:hhhd lycd9-;m1h s essentially zero at very low temperatures are referrhd h9;ht-yhc:d3ta 6.l1dmw aed to as

  What current is flowing if 0.67 C of charge pasehzlx5nk 24n qi)-f(3+s ughbu uef52;emim* s a point in 0.30 s?

  A charge of 12 C passes through a4+:qtred e *l6xh ,wrgn electroplating apparatus in 2.0 min. What is t grd4w,:r 6h+* txelqehe average current?

  How much charge must pass by a point in 10 s for thexg6t,un6e268/fdp soph4th brg 2y; a 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 flow5t mpbproe h iu(2:o-)ing 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, whic b5, tnk.npl5th draws 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have passed thrltknt, .b5 p5nough the coffee maker?

  In an electroplating process, it is desskx+qa(n72 mhfr0:gv -k p.e qs1g b)iired 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 silvemh-sggf +n2q1)v ixqp70skk:.e br (ar? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cas2,eijn rlh *2use 4.00 A to flow through a resistance of 330 W?l 2*se,n jh2ir

  What is the voltage across a 5.0-W resistor if e9me7ua: aq3i, ak/mpthe current through it is 5.0 A?

  A 4000-W resistor is connected across 2;8uk9onhhw a(l k7enz/2* 4m .kzjkgv20 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of curregrelj1 (c jk5/nt. What is its resistance?/rcjjg1(l5 ke

  A 12-V battery is connected to*:e,o4fngev6ys n . ic a 100-W resistor. How many electrons flow through t nigsn o6f:4*v,.eyeche wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of dg( o-mxd0/qt/t7vkse iameter 0.40 inch? (The resistivity dx tqkes/7 0o(-gm /vtof copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance oc8((r qagctq9f a circular rod 1.0 cm in diameter and 45 m long, if the res9( t rc8ca(qgqistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistiviqkf ,kf+9 fa;r13wh yu;6cu zs4t pks9ty $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wired iwaq5ukdp 0eh f*1c,,g*)hd (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 0.040p *x kwr.bh/3q ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 2s rw*wl6/thio87wkn u-3q4y d2 gauge (the radius is 0.321 mm) niwhst kuow-nq*yw3 id 8/467lr chrome wire if 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 cm long and of rectangular cross-section, 1.0 cm x f;v/dfjr*hgla f.:jj8 , yvu42.0 cm. What is the voltage drop along its length when it carries 4000 A? (Thfl,j.rf4f vu:8agyd hj*v; j/ e 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 anpn 0+j( ou2a54 xxszuvd 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 coppatpmvh9+s6* pk0;c rl er wire (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 re. m r7-)os5aymir8nmjjp i m:4sistance 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 resisdomk x2l(8153 .qmff grz -eu +la9xdjtivity 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 indium. The resist)wq oh2gsxci4 fl/rb:+v5l7h ance of the platic2hl/hg flxr oib s7+4v:5wq)num 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 throu2+sv-vwl8drw.*8 ayvx)n k edgh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it drawowghp8v;;:q 4szn s6w?

  A 150-W light bulb running on 110 V draws hof y dn7tbx;pi*wh qx 7lw b7(k);k((clw much current?

  What is the nominal resistance of a 100-W light bulb designed to be used icz/)g.d/-1pwl (ucxo i scrc* n a 120-V u /c.*li cr )/ wdxgzo-c1cp(scircuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heaact)z *p9 kg :)cvqyx*ting elemen gtq9*kvc) *apx: )zyct?

  A 200-W resistor is rk n1u,x1mjq cdmz(47eated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated ata6pb fe0y,w,3bo62z t o0 wjvy $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what cuyjh)ynu5t 7t48mu2 gy rrent does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistavq,0l0tiuxut6q4q0np 0uw1 ince?

  A 25-W soldering iron rpgy. ;zo n/2zruns on 110 V. What is its resistance?

  How much does it cost te;o6i /dig+j8 e) pljb95ym gfo operate a 25-W soldering iron for 8.0 hours, if energy costg+j5 p/8 ei)do9;by6 gljemifs $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hourst mb,4rdhmkix*2-v, b ?

  A 1500-W heater is connected to a 120-V line for 2.0 hoursv (iie7a, xjl2jzr k(+ qquv2)j)-uqu. How much heat energy i,qxiu)-j l (q 72 kuu(2jqzve+a vrj)is produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery store?0n)bh5i yxa7hu;(ow v ) ;xhu0nowva7h5ybi(

  How much energy does a 25-W sox+,9g-)ih a3x kjucnqldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. p.6s.- vsqjjd Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulbqv.jp6sj.- d s.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours2h ad qa:ayvtc7 9f* wa61qc*z per day. If electricity costs 10 cents per k7*v ayq q 96z2c1tf:wdaaac*hWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the commr+0xgx.;i qh bm:sh le+4lvzb51 2ost 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 zrh5i1 0m4hmlmsv;q+.2b:o l xbgx+econtribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element ,f4,/ ic(giwxmz uz9 w(lna.uin an electric drier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, i/ w( ca,(4ugil m u.in9xfzwz,n 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 through ry ik3)6t4n6d:bkmc m$8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs gao dmf 7-s4n*$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 ralz4yh zgl/8 o;te of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line 4glz;zhy8 lo/? ($1 \; hp = 746 \; W$)

  A 500-W device is connectay+s6t*jb+z (y9vwynt7 2m ) ggds p*zed to a 120-V ac power source. What rms current flows tg*v*z yy sz(j 792p6+tsndmw)atbg+ yhrough this device?

  A 500-W device is connected to a 120-V ac p7xf9kdwp) z : jg,nzb)9l,c(qv* w goqower source. What peak current flows through this devpkzbx97qf9z( w v )wd:,,*gn c)gqolj ice?

  A 500-W device is connected to a 120-V ac power sj m2ymn6(v hdv68 rm4hource. What is the peak voltage acrossvnv 6jy4 h6(2d8mhrmm this device?

  The diameter of a copper wire is 0.081 inch. The maximum s7dsc3n :wnffrum( q xb+9b,5z4o8pa e (e,epwafe 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 numb94 pa e+8b,(wx7zfb,n une(qf odc3ewps :rm5er of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)