A device that produces el5eloq2 knu6* jectricity by transforming chemical energy into electrical enoqkjlne u56*2ergy is called a

  A car battery

  The total amount of charge that passes th (trx;j1 l3gmgpu-* 7drghcg-rough a wire's full cross section at any poicd3-j;1(pghg glmrugx7- *t rnt per unit of time is referred to as

  The direction of convention cokwhn- d+6pt),xk8mp2k jc7fxn; o 8purrent is taken to be the direction that

  A coulomb per second is the same zvpb:qu.2hc6 5yor 92 fiwq9kas

  Car batteries are rated in "amp-he4e3ox snc9kw.6rgi5-j gi f;ours." This is a measure of their

  The resistance of a wire is defined f(. .:q xkg;c6thtl)qxz0iro as

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

  The resistance of a wire iku: w) xlpm8a :1qgl1r-i0ecfs

  The resistivity of a wirer2bw; +6ia5m k8evv 2ctyb9nq depends on

  Which conducting material has the lowest resistfxtu-5uo . cz/ivity value?

  Consider two copper wires. One has twice the length of the other. How do theda +5c-/b 7bh oanea*t5sbeq/ resistivities of these two wires h/aebb+ s bdaac *tq/ 5o7-n5ecompare?

  Consider two copper wires. One has twice the length of the otf :q)2m,ecne gher. How do the resistances of thnc,)eq2m:egf ese two wires compare?

  Consider two copper wires. One has twice thefvz vrnfh8b3b /4w9)q cross-sectional area of the other. How do thef8b49qvrv/wb)3f n hz resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-va -a:n g*(nakfd -)fjsectional area of the other. Howk :ja nf)fa vg-a*-n(d do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By w: zqe0wblm+o8cwmw ;; ;mwy-qhat factor does the resistance c-y;qmwb8 ww;0m: zcoewq; lm +hange?

  How much more resistance does a 1.0 cm diameter rod h io p/myr*s,3oave compared to a 2.0 cm diameter rod of the same len3soroy/ m ,i*pgth and made of the same material?

  The resistivity of most common metal6v 6j .6* qvxekoul7sz+ dw4ths

  Negative temperature coebomfjc41 vvo1b7mhg, . 2 ttz,fficients of resistivity

  What is 1 W equivalent toeps xa/p6:,om-mn p q*?

  A kilowatt-hour is equivalentp+-wpo a0+rh v af0vv5 to

  If the resistance in a constant voltage circuit is doubled, the power dissipg)*ewy u ,hr3pl9s 1ahated by that c w3pe)9sah1l,rhguy *ircuit will

  If the voltage across a circuit of constant resistance is doubled, the po2 d zmzdw 0kazsd(-6sapik31 (wer dissipai102w saa(kzzmdz sd3-p( d6kted by that circuit will

  If the resistance in a circuit with constant current flcvx2z,05 puu 4e)2l6g d4 z6eznixjhkowing is doubled, the power dissipated by that circuit wiz4k6zvg ep6x 4h0dlic2 2un,ez)5 j xull

  If the current flowing through a circuit of constant resistance uk *m/o -vpj)sad /kq0)ql )tyis doubled, the power dissipated by thq)ukkyv-pla //jtd)*m so0 q) at circuit will

  During a power demand, the voltage output is reduced by 5.0%. By psr/ k 0kh)1/cunhlt:what percentage is the power lkrsk0h/ c):uh1 tnp/on a resistor affected?

  A current that is sinusoidal with respect to time is referred to a2+nybi,vib*2)evgk o s

  Consider two copper wires each carrying a current of 3.0 A. One *7k3ptv1w c9iktdbiud +hh : rdi2/w4wire has twice the diameter of the other. The ratio of the drift velo 7ctbkww3r*d4h:/iv1i d h2pti+k9du city in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essz6x0s/v* gtxlc 5bs2uw 5byn :entially zero at very low temperatures are referr xz/* 2ucbvn50wsg 5sxb6y: lted to as

  What current is flowiw m 6 l94kznyyxq,zd(ii*b r*-ng if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. x9gv/,edi sxafu0 b;(What is the average curreev, xf0uga9 sbix;( d/nt?

  How much charge must z 2j- 5xvetf(h:3bkv8bq b vf4pass 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 i6tedrsqk7* k8f $4.0 \times 10^{16} \; electrons$ 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 foy). y);+ xowiv(xn0 gr zzqg-ar 10 min. What is the net number of electrons that have passeg-a+viz0ox x)zg); rw. n(yyqd through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silverc60 fp-vzw;c e 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 silver? (The silver ions are singly charged, and the atomic p-e6;c0wfcv zweight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow throlbty/ e22qlz- ugh a resistance of -b l2z /t2eyql330 W?

  What is the voltage gbrlumf3q3r9sj;qm98 hp))* i *sjwv 7y 7d ipacross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will flow?2xm. bepa(:6mawop g*

  A light bulb operating at 110 eeef:sjk/* 4itu5a v05 hd nur9l0j0da s,ze/V draws 1.40 A of current. What is its resistancesa950/vae dh fz0riene:5d *4sj,lkte u/ju 0 ?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow thro6 0 4boen8cnuxi bo4;jugh the wiux 4bbe;0n4 ojo6n8icre in
1.0 min?

  What is the resistance of 1.0 m copk*4 wz vt1.(fwk pn:4ai 0ylokper wire of diameter 0.40 inch? (The resistivi t.kkfko l4y0a(z1w4pniw v:*ty of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rzpfqhj/5 3/z0 yj;ricwh/ qs ;od 1.0 cm in diameter and 45 m long, if thc/rhqzpw/sif ; h 3q;zyjj/50 e resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (tqcv6nr opydwnn ca .6s-qi0o*-t)4 ,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 (resisy*v +frg .mw- x,oayb*tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m bgs9da(t)ro,long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m lon0jy s4k/+jot a9mwsrj0,/ hrig 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery,0j/oirk9j ssy/ mw+ r a40jht. (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 2.0 wqoav;- x9e(fk8j:4v3 fpcylcm. What is the voltage drop along its length when it carries 4000 A? (The xfy vpw vo:kq93 f;8 -c(4jealresistivity 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 resistiwzzu3;w06e k k3 .8a(r l,lbanyxb yw.vity 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 wirb3wzlgm0r2 gw,pl57b 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 resistance of q0zv3f lkix9(zlcn/4 $18 \Omega$ 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 coefficienbc4( cz ew-9qot 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 resi-tb6 4jub;)iixrtd egs4tq :-stance obtj4: ei t)rqu-- t4igbdsx6; f 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 thr rtri6zz7xke.r 55v1wough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cu3awp yq 5h lzesp34d8;rrent will it draw?

  A 150-W light bulb running on 110 V draws hd5hsp+1 ab3*h1 pi7j jstpd o:ow much current?

  What is the nominal resistance of a .p .ca 8 c+f+,iouavfd100-W light bulb designed to be used in a 120-u8 dv+cfi.oa,+c.fapV circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating ey)u393ww 1 e3er huwlolemen) el3we1uwhwy o9u 33rt?

  A 200-W resistor is rated fke dtdz;ex54.tt m /-*mk4yco 2mqu0 at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is raten ova4 nu76y3u1 z6zcdd 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 drraukd /sn(/),w 9osusaw?

  A lamp uses a 150-W bulb. If it is used at 120 V, wha6bm f7 9iuq24njmd)l ft is its resistance?

  A 25-W soldering iron runs on 110 V. What esjo k,;bwwhxe8/ f8+g.6 hylis its resistance?

  How much does it cost to operate a 25-W soldep.wqz0:l b 4ci4tqyp 4ring iron for 8.0 hours, if energy cos4bzc4l:4i 0w yppq tq.ts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 ,ixhq:p 1 cz3k0qium vpm i7++hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How muci; 4 1 unv+rzux;t7mhjh heat energy is proum;n7xrzhj 4v; +ui1 tduced?

  A battery is rated apu/phzf)m/,z t 12 V and 160 A-h. How much energy does the battery store?hpuzpm f// )z,

  How much energy does a 25-W soldering iron -;7bykwwu q xml5*b,r g0cuw.use in 8.0 hours?

  A 100-W driveway light bulb hg huuvo/; h2 wdbzus)f (75(vis on 10 hours per day. Assuming the power company charges 10 cents fohb ugowvv (72(u/ 5uhz) hsf;dr 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 dayb(f r ,dkpm .78ctuk3dn l*o*9vx z8pq. If electricity costs 10 cexn z, qkbv7 (p8trk*pmc ud83f 9.dol*nts per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a cendp, :/p8m70h/kthti ps zm+ tmtral air-conditioning ut:p mzkm8/7h,/hip +0mstpd tnit 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 electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric *x,zvw2zl2 +o+ swsyeyw i 4e.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 temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair have on the power dissipslws yew4+i. 2+zvewoz2y x,*ated in the heating element?

  14 A of current flowt i;(q56ei gx4q fdacfgug9*(2a0 b qcs through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs g1;p ;h6pi4tzw)tcyl.h7 bqmzz:j1k $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- p 5dqk o2md*oo3qs4l the rate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line?p5-s q ool oqkdm*432d ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-7;- v wq0ktayg2f9bc qV ac power source. What rms current flows through this devi07f-vgty bwc2qkq9 ;ace?

  A 500-W device is connected) *wr 9pll2iqu to a 120-V ac power source. What peak current flows through thisl2*ur9p) wi ql device?

  A 500-W device is connected to a 120-V ac power so 4pli bd:p4bf:urce. What is the peak voltage across thbf:4bi4pd l p:is device?

  The diameter of a copper wire is 0.081 inch. The maximum safe curreht3ubocg8 d8/hnsp 9c 7p )e9vnt it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is th3bc h88og7)hp en/ud9pc vt9 se drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)