A device that produces wvg;f* 7i: vnwelectricity by transforming chemical energy into electrical energy i;ivvg*fw n w:7s called a

  A car battery

  The total amount of charge that passes through a wire's ful 3s-*lma /k5 /1*nevjg owzhtpl cross section at any point per unit of time is ref age zm/s*nv*1 53phoj- ltkw/erred to as

  The direction of convention current is taken to be the directi-(ova+t ycxo8sg .ox9 on that

  A coulomb per second is the sa.l/ux rpylf,:l iy 7 f;qvwa/c,ik (jbrn-0 3eme as

  Car batteries are rated in "amp-hours." This is a measure of 8-npm/0fq1qt 4 +td lpkr,a gxtheir

  The resistance of a wire is definedvapkph4(v( /-hm;cn e as

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

  The resistance of a wireb70tapu+ chv2a1uoal3f v*s + is

  The resistivity of aj:l5m z a2el6z wire depends on

  Which conducting material has the lowestmf *k*azgx .k,r7c v4m resistivity value?

  Consider two copper wires. One has twice the length s+ sb6 u1df;8msz:dsprdyq/ .of the other. How do the resisuysz8mq s1sf:6 dbsd+/pr ; d.tivities of these two wires compare?

  Consider two copper wires. One has twice the length of c 9wvrk60bb k6*kt4s 6kqpiz8pzwq67 the other. How do the resistances of these two wir6k0vkq6wktp 8bcz7 6s6rk*wi4 pb9z q es compare?

  Consider two copper wires. One has twice the cross-sectional area of the other. y5ws/ w0 d9sdd*oivp/ How dv/*w s o/0wipd95dy dso the resistances of these two wires compare?

  Consider two copper wires. One has twice the hdsmko59h (lt w g8j:2length and twice the cross-sectional area of the other. How do the resistances of these two wires s2(jg hk:m8lht9 wo5d compare?

  The length of a wire is doubled and the rady 7- 6jmot5fdq;w wa,jius is doubled. By what factor does the resyamdjt,w w;6 -ofqj57 istance change?

  How much more resistance duuejle 5.5j )yoes a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the same material? u5ye.)uj 5ejl

  The resistivity of most cm4i nn-rvu:q :(3c .wsu:xr jxommon metals

  Negative temperature coeffp4lw :5du v j33en5fboicients of resistivity

  What is 1 W equivalent t yclemk0m2lbe c td2 q.t96r,5o?

  A kilowatt-hour is equiva)m/7 btb+px 9ndlw9wslent to

  If the resistance in a constazrlmvw42r 2yss . 5urj/)+gntnt voltage circuit is doubled, the power dissipated by tha2 l5)ygwsj+rzt4nrrs v./um2 t circuit will

  If the voltage across a circuit of constant resistance is doubled, th9-sk +,u3 g1s a0fsc(f earynm(n e-gce power dissipated by that circunses+smn gafu, ccreyg0kf- a9- (3(1it will

  If the resistance in a circuit with cond5 :.sq4/ aru8 fz wfm)ib top:x)j:aestant current flowing is doubled, the power dissipated )5si m 4:wo/rtpf:a q8:.fxzaje)d buby that circuit will

  If the current flowing through a circuit of constant resistance is doq(;dm,p2vqezwc6/6 /xaz nwe ubled, the powv/xacnzww z qqde ,;6(mep/62er dissipated by that circuit will

  During a power demand2vj)3a7 c3o al0 jsfaed v3k(x, the voltage output is reduced by 5.0%. By what percentage is f) (3voa0ceak3sj32 a ljdv7xthe power on a resistor affected?

  A current that is sinusoidal with resr+ ;pyj ug(0elpect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 fby :ixxm3t6rxoj, 0 3A. One wire has twice the diameter of the other. o mxj3x0x ir:6b3ty,f 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 essentiaf mvtan.gf)z+u28bb7lly zero at very low temperatures are referred to ga+nu b.zt7vmfb8f 2)as

  What current is flowing qq )7wx+- bf5ro ml.ruif 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2. uu*k0n * .:u*v5uadoe eocx9g0 min. What is the av9du g*oe*aeu v:c oxn.ku 5u*0erage current?

  How much charge must pass by a point in 10 s for the cur(+we f ::jb7vx -qynkwpt44 aurent 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 flowingh)1r :x.;nz5ysae 6(tpjrd ve 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.p.3ov6 k3yz bh5 A of current, has been left on for 10 min. What is the net number of elb33o6v.pyhz kectrons that have passed through the coffee maker?

  In an electroplating process, ic q857 ,w,tn-qb* 5gawd qipbpt 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 deposit this much silver? (Thi8n, *,cdbtw g5w7-pbq q5aqpe silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is requ r;uir3omte( 5ired to cause 4.00 A to flow through a resistance mrt; i 3(rue5oof 330 W?

  What is the voltage across a 5.0-W b(e5s/jnqlv/:r za*t c.g zy 3resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. t;-o4gp+x cwykl:pt4 kbn )5n2c;mvwWhat current will flow?

  A light bulb operatin(ed1de,a ekea:dl7zmwj 3m5 )g at 110 V draws 1.40 A of current. What is its resistance?j m7a,k)e5dwe (al: deedzm 13

  A 12-V battery is connected to a 10m am2g0*jb. ag0-W resistor. How many electrons flow through the wijb ag.m ag02*mre in
1.0 min?

  What is the resistance of 1.0 m coppthn)i 06) jswjer wire of diameter 0.40 inch? (The resistivity of copper is ht)ws0j j)i6n$1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter *f*f ywkv80eyand 45 m long, if the resistivity * fev*yf yw8k0is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistiv hy p+l7 0nczp2a,mt 4+lrd.*br ev(ldity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivitj7 6zl-7w s.ir + rpt/m(mnuqiy $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 isbv;zt3 e+s l0)x fjg7s- 4vjk- sv0zoc its resistivity?

  Calculate the current through a 10.j+n jou,h0h1t p+62+kkkc g yk0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is conny+ok+2jkkju hn1th6 ,+ 0cgk pected 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 c(wir 1f-9ju qq:jha;qm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity o q:1u( faihj-qq;rwj9f 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 resistivity om,a.c0;hc bydgxm)d utw6eouw 3.v) 2f $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copperxd ia, is.+hyd;dm .*f 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 habk a.kcaw vx* kdc2s+* y;96hss a resistance 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 p8ge5x/q d;kp 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 jb9m9jiku,5v melting point of indium. The resistance of the platinum wivi 5bjk9u j,9mre 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++ hhehsyff+ky., /kn $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 12d -j 6ro -8lrqglbw-z000 W. What current will it draw?

  A 150-W light bulb running on 110 V draws 9b tf) d*u)iugp0 k)zh8 6v6rpmjm n0thow much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in ajp42(eorfgh2 ne -6uw 120-V circuit?46j 2n2h rfu w-ogpe(e

  A toaster is rated 800 W at 120 V. What is the resii0nt4w-tw 9)gsxujm8 stance of its heating element?wnixt0 w)94 jm-ugts8

  A 200-W resistor is rated (* e4xx5t(vm*4w yonb 5tfdje,gy2br at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rateav6/,s3gnea, v(e)m. stglfdd at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb lkj*;rnwqk;.ti ;lfvs8 q. 6h. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, w odbt mrg3v3q3;i y52nhat is its resistance?

  A 25-W soldering iron vs+u(u+gr1ni- qcno2 runs on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8 3v3 xym, og7x +m)spe3w9kqbf.0 hours, if energy costsx +3sobgm,e3yx 79v3w pqf )km $0.08/kWh?

  How much energy does a q2 ;drp.pl:r2rb y) yh100-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0, v 4gmwo1dw1 u3e(nnik ke.;c hours. How much heat energy is pr ,1k1eke uw( cmn4wi .ngdvo3;oduced?

  A battery is rated at 12 V and 160 A-h. How muc-:l9ev+nk z9s tdcxd8h energy does the battery store?dx-ktc8n9s: ez v+l9d

  How much energy does a 25-W solder89vh) q8xikhuo j l-76kj-n a3j :hqgling iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power ce/w d+ p)ara 3-ofpgc-ompany charges 10 cents for each kilowatt-hour of electricity used, estimate the anedar o)p/g+p-f-3 acwnual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8. :ixm2 o,e4:afat2 erfw6) gse0 hours per day. If electricity costs 10 cents per kWh, how much d g2t,eomfe6 aaiex:s:42w rf )oes it cost to run the computer annually?

  The monthly (30 days) electric bill included the cosbv8oqzy + d(5kt 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 contribute to the cost dy8kv+qbz( o5 of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier rm:hgn+- bwr) e w/k0doperates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the own/: m0)gndhk-wrer+w ber 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 thry l4ai),obw n nop1m.8ough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs gc4at )4wp c.sx,7v 1xh, viac$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 has 60% efficnjz-j 5478r :2tvsgh 2 ldhpuliency. How much current does it draw from a 120-V linel:j zs-plnrh h4dj5u 8 t27v2g? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms cu z2ebxx *ecx+,rrent flows ex,x*2e+zb cxthrough this device?

  A 500-W device is connected to a 120-V ac power source. What peak currentw v *v-(qnynlb/v.xi7 flows throqlv*n xvb /wyv (7.-niugh this device?

  A 500-W device is connected to a 120-V ac power sou rltqqg(npm8lbg)bxs 738m+3 rce. What is the peak voltage across this devicmlr g q8b (q 7mts3bnxl8+g3)pe?

  The diameter of a copper wire is 0.081 inch. The mac0u fegh2u. x:ximum safe current it can carry (in order to prevent fire danger in builfheu2u .x 0gc:ding construction) 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 $8.5 \times 10^{22}$.)