A device that produce y0z: :uxy5flys electricity by transforming chemical energy into electrical energy is z0 yfy:l5y xu:called a

  A car battery

  The total amount of charge thatvs1 durf 3(iz- passes through a wire's full cross section at any point per unit of time is referred to u-1vi( fs3r dzas

  The direction of conveywzo2aihx6 9 x; x)ge2ntion current is taken to be the direction that

  A coulomb per second is (pxzkh222 0wm k;jlukthe same as

  Car batteries are rated in "amp-hours." This ;-,df8-x hinyv . pwjeis a measure of their

  The resistance of a wi0y ztkbgh8 hk1 n6x/)hre is defined as

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

  The resistance of a wire iv0wyc6 ;uq5nv avo)+o s

  The resistivity of a wire depends o-wt(o- rs-l kan

  Which conducting material has the lowef2x-,: 3bgxqccl(d:fw d au -4fr;uxqst resistivity value?

  Consider two copper wires. One has twice the length of the other. How5js dkp7k1-x.4xwka w do the resistivities of the4kjd- 5a.k1wkpxx7 ws se two wires compare?

  Consider two copper wiresz8 5 x5fpv+b goy76gje. One has twice the length of the other. How do the resistances of thp 8ygox+ fegz5j65 v7bese two wires compare?

  Consider two copper wireaoox63my.9f7 6al3bik-efzl2 ell l gt03en- s. One has twice the cross-sectional area of the other. How do the resistances of these two wires co3l l-me9.oxl3f 037ifyt aal2l-ebkzg n6eo6mpare?

  Consider two copper wires. One has twiceu+ b 1vtdfj69a the length and twice the cross-sectional area of the other. Hdba6 9+v t1jufow do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. r uwkzi0lc8 +/ws.,w hBy what factor does the resis w8/u0kh iwwc lzr.,+stance change?

  How much more resistance does a 1.0 cm diameter rod have compared ):iu lgeulx2+ to a 2.0 cm diameter rod of the same length and made of the same mat le g+:2uxi)luerial?

  The resistivity of most comm4,pmxgw,nx/xy m 2n1lon metals

  Negative temperature coefficient okp .fmr:lm) uo;)9ng sj.,we8jt6hes of resistivity

  What is 1 W equivalenw u graz+ipe*i )cwx8,80 i6xxt to?

  A kilowatt-hour is eqx+g0 ; k yeci3f :ae;okd2d0jyuivalent to

  If the resistance in a constant voltage circuit is doldbrw (s7jbei)ee 5j6.rvi1j y3.8y tubled, the power dissipated (.8 jtrwj.) bely1 dbj yee7v3si ri65by that circuit will

  If the voltage across a circuit of constant resistance is doubled, the poweec cc,rih8 (17nt 4qpsr dissipated by that r c7(n s8,c1h4ic qptecircuit will

  If the resistance in a cioiixs0 *3 ps/f :ozjgx+k) kh)rcuit with constant current flowing is doubled, the power dissipated by that circuifiis )jgkkpx : o*)0xo+s zh/3t will

  If the current flowing through a circuit of constanzv(bm kq0i .y( v)vi9dt resistance is doubled, the power dissipated by that circuit w((i 0qzykbvvmd9)v. i ill

  During a power demand, the voltage output is reduced by 5.0%. w m vp.5, a3e3+esnwla By what percentage is the power on a r , 5lvmw3e3a+sw nae.pesistor affected?

  A current that is sinusoidal with respect n4 tkftyub8-wbcig -h+ w8t4*to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One vq;g( (y+wo fdwire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the woyv(q+ fdg(; larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low tem-sm - u5li:ivb1d jhw/peratures are referred to as:-sjibdvi /huw-1ml5

  What current is flowim,u 6rp /syd+;j-eu seng if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplati xndjr ph9i+k1nx0*b 2ng apparatus in 2.0 min. What is the average curre+*nh 09xkbix jp nd2r1nt?

  How much charge must pa+id vz8lya+/wss 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 flowbf0 1 /bjobwk5r-tlx,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, which draws 13.5 A of curr rwgt5 rm42rw6ent, has been left on for 10 min. What is the net number of electrons that have passed through the coffee makerr26w m4wt5g rr?

  In an electroplating process, it is desired to deposit . ggx9vuvl*5 b40 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 deposv9gx b*g.5vl uit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is requi1. u)0(wrbsah mk.j cired to cause 4.00 A to flow through a resistance of 330 W?.s( hmb.ca0w1ui jkr)

  What is the voltage across a qc t6+,vf)(vyp.sk z- iztde65.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. W4 hmxnu53 lep+hat current will flow?

  A light bulb operating at 110 V draws 105jphic 02phij:mx bm:np 946v -bbjk.40 A of current. What is its resistance?2i jmh4ivp:jh: jnk6- b9m0p5bp0bxc

  A 12-V battery is connected to a 10lwt2eqpqr*232w zxu80-W resistor. How many electrons flow through 3twu2* z8er 2qlpqx 2wthe wire in
1.0 min?

  What is the resistance of 1.0 m r qk6b.ls/0brcopper wire of diameter 0.40 inch? (The resistivity of copperbr0lr6 /q b.sk is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rm; ywgmsd1:5f od 1.0 cm in diameter and 45 m long, if th1;f wmgs:5my de resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivity 4 l*+fh9hdjkcz1enni w 0y -;h$1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper kua+bvi-:m : vwire (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 0.040 ohms. What is its resiste yetj5tt-4o5(o .ic hivity?

  Calculate the current through a un k zqm6( 5ycg,or c)yq/,+zv10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V batteno6yzz+g um,5(y/ ckq ,vcrq)ry. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangrk)1y m1qu -z2xpa8 ufular cross-section, 1.0 cm x 2.0 cm. 1m1-x2 rufpk zu )8aqyWhat is 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 h 05v q6(nsbo w-uqfd;las a radius 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 wire (resistivity acjvq:4s v4;j2sbvk ryqq65f ,yp-0q$1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a rf62i1inrl)4v; o k wdeesistance 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 coefficii be9z * sh.3fzo-.fxkent 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 indium. The resis,u uz,*kw7zxo z, 6dvutance of the platinum 6,,ouuvd, z uzwk x7*zwire 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 throx2nsg(y e:-q69zu wjqugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. emd 9 oy442ogy What current will it draw?

  A 150-W light bulb running on 110 V 6q-bad2fl v .d*oo-kjdraws how much current?

  What is the nominal resistai+ds b(tmubvy9**q,a w. 5ijrnce of a 100-W light bulb designed to be used in a 120-V circuit?+m.b*ytisdb aqv j, ruw(*95 i

  A toaster is rated 800 ) debyv-r/t 3aW at 120 V. What is the resistance of its heating elemenrv3d)/- ayebtt?

  A 200-W resistor is rae11 u.ngr, yddted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at zre 7e.jkdq2qxf09b +$1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If m1n j-ij.zo6:vl hf1z2dro l bw:3ip1it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its res;l9tq ymxuiu9o d)83q istance?

  A 25-W soldering iron runs on 85 2,dkcnha hd nls)2gudj)bt g a2/:vbes f++110 V. What is its resistance?

  How much does it cost to operat 2c e crwy(-n:23somyme a 25-W soldering iron for 8.0 hours, if energy cnm( 2-3wcmyc:y2 or esosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hojjsn xb:0bx zxp 988u 7ttp,x2urs?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat eyr8lcq 4 t;9exnergy is produced849yt l xqrc;e?

  A battery is rated at 12 fa(w 3 m qsk4w*2wyar/V and 160 A-h. How much energy does the battery store?2 wwf*qa4/s kyr3m(w a

  How much energy does a 25-W):saeozqqy3/o d )) f8qcsas- soldering iron use in 8.0 hours?

  A 100-W driveway light r )zz pq:80swgj9vfd5bulb is on 10 hours per day. Assuming the power company charges 10 centswsp:80 fqz g)rvjz5 d9 for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If eledzn,g*(7m2m3phd oa;rai8 n mctricity costs 10 cents per kWh, how much does it cost to run the computer annuald n37a; m 2iz(gapr8 mdhn,om*ly?

  The monthly (30 days) electric bill included the cose0jvg z2kb: l3t of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60evj :203zkgbl 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 a+ ou* zsq-aj; hyj4qfk;f4p:ge gu96nnd generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nz4;yg4u*aj+9uk6sp :j g; f-foq nqheichrome 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 throu.;wjyo/g vm3 vc i;x2ogh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs y.kv6--utupwhg ubrd .fk 7 24$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. yph,grklcyzn 5o:l 7tzwt: //o)7yz 2.0 hp has 60% efficiency. How much current does it draw from a 120-V linto/n)yywh , c7g5rzolky:.z/tl7 z p :e? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current f ve*s,kb xohyn ufkz *p-0e4.7lows te4*ok.s-z0e hb,7*pyuknxfv hrough this device?

  A 500-W device is connected to a 120-V ac power source. h8r6aq /8i ;2q5s)tvjdugc uiWhat peak current flows through t5jas2cut gv8;d86iuq i /h)rqhis device?

  A 500-W device is co nb*w : q:m*/; jiss:cfkbtdx: p21zvennected to a 120-V ac power source. What is the peak voltage across this d / :v *cpebfid;skn:qs2 z:mtx1j:*wb evice?

  The diameter of a co5 wlcbp/pg2b/ 3jh0u y26tozjpper wire 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 number of el2l y0b/5 huwt b 2cpjp3ozg6j/ectron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)