A device that produces f7 3x1p th+mzzelectricity by transforming chemical energy into electrical energ7 fhz1xtpm+z3y is called a

  A car battery

  The total amount of charge that passes through a wire'd, isk9jnujsj-c* r6:s full cross section at any point per unit of time is referred tkj,ndsr *cusj i 6:9-jo as

  The direction of convention current is taken to be the directiw s0r-2 z;j6hdl1u tdlon that

  A coulomb per second is the sa ;;n zpg(xv4 b2o(pvesme as

  Car batteries are rated in "amp-hours." This isvab .u96oq wz;5h2r cf a measure of their

  The resistance of a wire is de:wd(o m)u1h1o hz 7whtfined as

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

  The resistance of a wxp5y/; e- ddgnake ;.uire is

  The resistivity of a wire depends ,ogml bsf ;c7/eu(ug4on

  Which conducting material has the lowest rvfux 40(smpgw+ p htvv *fo.u 7*.bqh)esistivity value?

  Consider two copper wires. v-y)b y3wg- s9za0mluz;u6o v One has twice the length of the other. How do the resistivities of these tw ms au9)vbu vy 0gz3;o6-zwl-yo wires compare?

  Consider two copper wires. Onapjt / r/ t,*bmf/zs:te has twice the length of the other. How do the resistances mttj fa*r :tbp//s,/z of these two wires compare?

  Consider two copper wires. One has twice the crosq*zf2teruj - 3s-sectional area of the other. How do the resistances of these two wires compareut*3 re q-2fjz?

  Consider two copper wires. One has twice the lent2ljt12epwtv8ms7zjg:xohi9 5 a4 ;pgth and twice the cross-sectional area of the othertw2t 9s 4o2 e8lz:j5gippma1 v7ht;xj . How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By wd am(o2qr0p u:hat factor does the resistanmuq ad(p0o2:r ce change?

  How much more resistance does a 1ovg v(b6zon/7x elrnt5)-5 xa.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the sate- 7obx(x5n/nv o 5la6g)vrz me material?

  The resistivity of most common metalb:nkmj9mr 1e.rt4o 5a ef;el j+h,1s ms

  Negative temperature coe t 3p4j5- xaqm,gi/wkjfficients of resistivity

  What is 1 W equivalenr1v+l(zq 4o vp-)p7x ix, sxxnt to?

  A kilowatt-hour is eq / ,qygpuhe8b;uivalent to

  If the resistance in a lsdf3ykye8z /82e np4 constant voltage circuit is doubled, the power dissipated bk2s8yel3 epd8nz /fy4 y that circuit will

  If the voltage across a circuit of constant resistance is doubled, the pohkuv4 / 7l vyj49akip.wer dissipated by that circuit will.iku lyv/4 kh97 ja4pv

  If the resistance in a circuit with constant current flowing is ctmkmz 2 ax64 x4tkhab5m220hg(w2ag doubled, the power dissipated by 0hgxb4wzaa22k ha m ckgm 62(2xm4t5tthat circuit will

  If the current flowing through a circuit of constant r(m 53)inyew qyesistance is doubled, the powere 5q3wn)(ymyi dissipated by that circuit will

  During a power demand, the voltage output0d74 wtx 99-kukz jtxa is reduced by 5.0%. By what percentage is the power on a ret a9ud t7xj4zk- k9wx0sistor affected?

  A current that is sinusoidal with respef33d 5 xoi .kva4n+fz5u8ycynct to time is referred to as

  Consider two copper wires each carrying a curre 8kt. fot8gk2int of 3.0 A. One wire has twice the diameter ofgok 8tit f8.k2 the 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 essentially zero at very low tejnx wfyjk nxr1q).5 bqg, n0.*he8c 4zmperatures are fyz0rnj. n4 j1 hb,.xxen qq5 )cg*k8wreferred to as

  What current is flowing if 0.67 C ohs fu9*ef l. ;lxm)vlrw m(,s/f charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatuswtlksbl 48 67ec2lo+o in 2.0 min. What is the avera48olo 2ek6s tbw 7+cllge current?

  How much charge must pass byp0 k22wtsn0 7nm b,0fwkujb1z 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 if myi+gx,n, avyn09 82k.w(0kr stn i sc$4.0 \times 10^{16} \; electrons$ 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 w g 9p4 ;aqgv:;ajb;tl sk3mc)aja.n5on for 10 min. What is the net number of electrons that have passed through the coffee maker;jag lsnm)4 b9wq: cp;aa. tgj;v5k3a?

  In an electroplating process, it is desired to deposit -u*kogz zr1 cb;bv.p; 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 silb b- ;krz1;vpc z*.oguver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resiw,h+7)b5k eivy bi os,.izbi ;stance ow i.ebkyb,vs57z,ii b); io+h f 330 W?

  What is the voltage across a 5.0-W resistor if the current 7bgpz/q *ts7 c91vupathrough it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current ;mv7 ,8z xcr:xpx: 3xmy.xvf bwill flow?

  A light bulb operating at 110 V draws 1.40 A of qp(a/k8y-pf;tb zh l :current. What is its resistance?q/z (pak-f;yp 8blt: h

  A 12-V battery is connected to a 100-W resistor. How many electtu vh3m; p3/z(gzq de1rons flow through the wire inp3tzqu;3 demvzh(/ 1g
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 i2ag6-kr ifh k0v0s k d6l(;svhnch? (The resistivity o df k-;0 srhav6kig(hl60k2vsf copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cmi aa1cb:p( f)q in diameter and 45 m long, if the resi bpfqa:(a)c1istivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resist0q8-z 9pyzo2jqsy6b y(kcc)z ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper qk5*xu0y x8 pqx(nu* xwire (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 lons8i;1p bp8fz wehjsh* -sek;9g, measures 0.040 ohms. What is its resistivity?

  Calculate the current thrz h8lc rwsnvo2mo 0,8+ough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of nich+zwrmvsoc80,o 2n8hlrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rec 4r(y7kwxts* ctangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivityr*x(wc47stky 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 c*:-ec8t)nfav l2fnw( oqo1hydo+7r 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 wi;fpx mof l4i1 tfo,a(06:okl are (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 resistajy oa, ai7,tc3nce 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 plaiwu(qe6m j zm r*;5vg.tinum 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 poi cqfps8+,k9 wynt of indium. The resistance of the platinum wik,f9c8q s+y wpre 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 through an lq,7p (xtpv9 v7lb7zm $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. zzg k* 39j7-inh1uncr What current will it draw?

  A 150-W light bulb running t;yv661 /basq bss9vm (2zajoon 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb j:zp j7dfili o ,56k )w4mhei9designed to be used in a 120-V7iljd)f5:,4hz9k iw6p me io j circuit?

  A toaster is rated 800 W at 120 V. What is the resistance of iuh.4a;1(g b fh uhv5cq;kq yr0ts heating element?a1;chu5(u fkv0h qg 4;r.bqhy

  A 200-W resistor is rated at e -,sc:+grf+hxmrf lym63 - pz$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is raz x(fac al8hm0x/h96c ted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, wh)3r+(n wmxrzkrr23iywl l4 k8at current does it draw?

  A lamp uses a 150-W bulb. If it is used at 1k1x ; tz.gqie420 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is i5x* vyv4i(jbo0 rpjk s0m/u3ats resistance?

  How much does it cost to operate a 25-W wh;z+5un-8sqgnl 3pc soldering iron for 8.0 hours, if energy costspc; l-shz538gnu n+qw $0.08/kWh?

  How much energy does a 100-W light bulb use in n v i;(1y:dsx bbhm1lmb.a 22e8.0 hours?

  A 1500-W heater is connected to a 120-V lpzeh;c,u4yp1 ha )8oga() izl ine for 2.0 hours. How much heat energy is z)pl1ca(i;og, huyz8)hap 4eproduced?

  A battery is rated at k/ ,*be,cal1 (ybklka12 V and 160 A-h. How much energy does the battery store?cbl , yl/(kkb ke,1aa*

  How much energy does a 25-W soldering iron use in 8.0 8a6bpgb w ed:w;y,y-ohours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming ew(gfl pu6).t3xoim ; the power company charges 10 cents for each kilowatt-hour of electrici.ogwu;( 3pe 6 fi)txmlty used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is1*s71oj wi ips turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annually? pj1ws*i71ios

  The monthly (30 days) electric bill included the cost of running a centcw 9/ev )bkrsjq c4c6q *s.oo,ral 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 towsev4 skcjob,qc*cq)r/ 9. o6 the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element iyhrz3y*l8ag0x47n d e n an electric 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 og *483dny 7h0yerzxalf 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 thro zoiy0/ (, vac8lgrmw7ugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost iqrqc5h hn+gu/9sn s1gld(: 5s $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 2.0 hp -c3y/-s,dy:hp;nwb +wr y(vvn r 9gbrhas 60% efficiency. How much current dob- /;rhg+rvsnbp :,(ny-cd3yv wr9wy es it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms curreac hi63mcaja4 2y w20;bssa8 mm6nib1nt flows thri csm8aabjna1im;h0 wa4 2 c6myb632sough this device?

  A 500-W device is connczokjy 3/.my8 ected to a 120-V ac power source. What peak current flowsj/yozmk c83 .y through this device?

  A 500-W device is connected to a 120-V ac power source. What is the pe fo6 kiry8w1vy41 l sgdwd2t:)ak voltage across 1: gyy) 8w1dsrk i2lfvwd64otthis device?

  The diameter of a copper wire is 0.08 dy+c.h(s9.r qwyklw81 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 veloc 8k.rwchlq(d+sy yw .9ity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)