A device that produces electricity by transforming chemical enezns+ww+n;2 slhed3 o:rgy into electrical energy is cal; +hlsosw+23n:zedn wled a

  A car battery

  The total amount of charge that paswh8my,h9znc e(8 kl e+ses through a wire's full cross section at any pointncwyhz +9mh8k8l,(ee per unit of time is referred to as

  The direction of conpgn1 mkuw3 alr*6-ul3 vention current is taken to be the direction that

  A coulomb per second is.tdyl( /os ma* the same as

  Car batteries are rated in "amp-hours." This is a measure of their gu rpwsf /*0ty+/m3av

  The resistance of a wire is defined a 3sr5icm(8b bxs ko9 t.e*n-yws

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

  The resistance of a wire is vi( -sg.sx02vwfx0jc.z idk ;

  The resistivity of a w gi6 w6s(wek6lire depends on

  Which conducting material has the lowest resepcj43jbf.; (ewmh,nistivity value?

  Consider two copper wires. One has twice the length of the other. How do thwf/5t04k+x5nht ncr re resistivities of thescwk0x tf5n+h rtr45n/ e two wires compare?

  Consider two copper wires. One has twxxn7 exjq )tfm- :m6ajd47t5tice the length of the other. How do the resistances of these two wires cotj4f xe xn-7m t )q5j7atxm:6dmpare?

  Consider two copper wires. One has twice the cross-sectional area of q-f05y thh0mlthe other. How do thf0m -l5 ytq0hhe resistances of these two wires compare?

  Consider two copper wire(dcyf6)t c 632 7zmwd4gitxj ds. One has twice the length and twice the cross-sectional area of thezdtc4 36y)mdtxd 7w6i g(f2 cj other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By whk 0; q;idxlx3ylx1 m(lat factor does the resis1;x l0xild3mqly k( ;xtance change?

  How much more resistanc6k 3hgx01cdrb5 xy .rve does a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same lenx05b6r1h r .c dkvg3yxgth and made of the same material?

  The resistivity of mvg+ y ic85vucqc85o4 iost common metals

  Negative temperature coefficients of resistz(;e -ks- 1xpw ;vb g;rysrn04p6l7chm0u bis ivity

  What is 1 W equivaleucq7x 5m j8ywv8+dm7u(k d*zi nt to?

  A kilowatt-hour is etb/mr3+sfhj w 99ii9 rquivalent to

  If the resistance in a conshdbi kv79tgyncxb3,1/ q*fi1tant voltage circuit is doubled, the power dissipated by that cixiyb1g tn/ b,f 7i*h 1q9kv3cdrcuit will

  If the voltage across a circuit of constant resistemwgrgs 0eb1k;xqfm ( 04hc0:ance is doubled, the power dissipated w 0m1h 4e :s0rfb(m0cgxe;qg kby that circuit will

  If the resistance in a circuit byd+)6g. 9cmpeg. upiwith constant current flowing is doubled, the power dissiped.g6y cu+.g9b)p pmiated by that circuit will

  If the current flowing throughcuj tx dhhu7e 7cr42q/6hy, r -gjco1ueb0v55 a circuit of constant resistance is doubled, the power dissipated by that circuithty hob5e277j,uc/gr65c 0uq4 chuje1xrd- v will

  During a power demand, the voltage output is reduced by 5.0%. By what pgw5x0a ;w dt(vercentage is the power on a resistor w(g;tx 50wvda affected?

  A current that is sinusoidal with respect to time is referred to asf963do 38/r .w3ot qpjcogxsn

  Consider two copper wires each carldpm. (9*t:nk 0fq,6sfr dahdrying a current of 3.0 A. One wire has twice the diameter of thl(6drha 0 q,d9*ffmspk:. tnde other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes ess1/euj d9bxsl ) s(4bgqd..egjentially zero at very low temperatures are referred x4sbdj.gds/jgu be9e( q1l. ) to as

  What current is flowing if 0.67 slhi bkwtd/.a)ir(ov f5 s.20C of charge pass a point in 0.30 s?

  A charge of 12 C passes thr ldp4*fb(lib0 s o)yu:ough an electroplating apparatus in 2.0 min. What is the average currentldf(ipo: *04u)b ys lb?

  How much charge must pass by a poinfy vdl56q6:c rt 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 if ocq.dlo 6l8ay -7;p bw$4.0 \times 10^{16} \; electrons$ 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 13n,) j3shsllaok;ra*m ;-u3 z z.5 A of current, has been left on for 10 min. What nk,suhao zllsm3j- 3 *;) raz;is the net number of electrons that have passed through the coffee maker?

  In an electroplating process,u4 b4733o,mn h g:wdw4kmsrgm it is desired 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 depn44 3 moksggh,du3rwm 47mwb :osit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required mh.1bcj*gktp q-uie/n.5j( p to cause 4.00 A to flow through a resistanbem1c.u.*k(qp in 5p-g/tjhjce of 330 W?

  What is the voltage across a 5.0-W resistor if ths/8n2e4jnzofypy(h-b3 tc,q 9zdeq i z8t* n5 e current through it is 5.0 A?

  A 4000-W resistor is connected acr :b*neu tg*,pxp2q0ca u94yd ross 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. Wha me638p;mejn at is its resistanceeajnm8 p3me 6;?

  A 12-V battery is connected to a 100-W resistor. How many eleci7.pv)thr;/lru +dt okwo d)k,rg)(strons flow through tr+ wvo;gpl t/(udo)dt7)is k.r )r,h khe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? qwm,wn*psb1rfio,g0p ) u;:f (The resistivity of coppiu1o*;fn:w,spf)bpg q,0 wmrer is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rgh gxsgi., y y.s82,ar30shdeod 1.0 cm in diameter and 45 m long, if thgregh8..yy sa2sgi0,x 3hs,d e resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resisgc-,s5t p3c,j ;b jbqytivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (rea1/lxneloub(f8kn. 9 sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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..* /xmapve x6ed*w xg) What is its resistivity?

  Calculate the current thr,i b uud/-d5ndzafvo5 sc4,7y ough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome w-o, s7ubz ydcnai5 /u45fdd,vire 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 an53r *r shxgmp.si322z7erkc vd of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along imv7.* gh2zc532 3rksxrerpists 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 mm wu.ksn ia/*n5and 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 copperk7lru:hd+,bl 8 -bzhz 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 resg1v blfrjil l s9n*,4.istance 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 resivl9ot kkp z.q2/f6k b f;)1rmrstivity 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 mel(.bub kyd oun9n5tq v4. s*vb.ting point of indium. The resistance of the platinum wire is 5 bnb9(s*uv vbqdk..nto u4 y.$2.000 \; \Omega$ 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 throy:j(/pzmlb(bxz f;f u-zf r c::o54tkugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cka v* sffkzm7viga/* k19kh8 8jar- f5urrent will it draw?

  A 150-W light bulb running on 110 V draws how mu/pbrm,s k :2ldch current?

  What is the nominal resistance of a 100-W light bulb designed towm)rqh ha aer)8fzwu/2cwq)--g . ky1 be used in a 120yrakq18mgr))-w) h2wwfc . uezq/ ah--V circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its h-x *y1by fwve jt-5zd1eating elementbx jtdv15-1 ef yzy*-w?

  A 200-W resistor is rated at /gph m95ana6i $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated s9hkyo3(rj2 8;hdx sy at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is7kz 2/p y-yqzr used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it isk wb 1w:+f2kyh 29cpkcq* ung: used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. i 7/8zl*l)rtl b z5whl3kkxz( What is its resistance?

  How much does it cost tc) +us8hz)l upo operate a 25-W soldering iron for 8.0 hours, if energy costsh8+luzsu )p)c $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours4pb ae5 w1kqr/?

  A 1500-W heater is connected toa0)e(ocen7 1 a- s0a9ofvhs ap a 120-V line for 2.0 hours. How much heat energy is produc nos0aee97s- c 1aa)vapfh0 (oed?

  A battery is rated at 12 V and 160 A-h. How iiwabz99fg9-q7 yz:f much energy does the battery store?a9q-9f g9i fzy7w zi:b

  How much energy does a 25-W solder 7(+6xtfh ga- in-qrzaing iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the,ozn; gquay 85 power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to opg8uy,; qnoz5aerate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 *7.yt7 +ugg ya/xrpxhhours per day. If electricity g+.7 /y*h xxyt7auprg costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running v6pvq 4+xmvvqb4f 9+ta 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 monthly electri6p v4 vfq+b+94vtmqxv c bill if electricity costs 8.0 cents per kWh?

  The heating element in an ele*f; mbobfo8) 7jrq pryqk-: n9ctric 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 Nichrome wire by 10%. (Assume the temperatu 9)f 8p;m bq-qo rj:k*ob7yrfnre 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 throu7uf r aoxel65,gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costupw 2: cg ia.z1+hc/5b8e llcss $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 o)zhyjj gz(4c2 f 2.0 hp has 60% efficiency. How much current does it draw from a 120-V zzj 2j(4ygch) line? ($1 \; hp = 746 \; W$)

  A 500-W device is cozgl lv006zao0nnected to a 120-V ac power source. What rms current flows throug60z0 gaovlzl 0h this device?

  A 500-W device is connected to a 120-V ac power source. What peak cux44bckfi .sq+rrent flows through q4.sbf+4xkic this device?

  A 500-W device is connected to a 120-V ac powe2pij)b x mln*m,5oons7t:8pxr source. What is the peak voltage across this devicilp*x,t:p)n8 mmo 2 5 snb7xjoe?

  The diameter of a copper wire is 0.08 6mp 0glf3)) ,zbegull1 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction)zp0)eul, m lfg6b3gl) 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 $8.5 \times 10^{22}$.)