A device that produces eexyn kh t4f1; k6;rht1lectricity by transforming chemical energy into electricy h6et1 rk1xtn ;hkf4;al energy is called a

  A car battery

  The total amount of charge that passes through a wizy se6r-hzmq; nb+8f. re's full cross section at any point per unit of time is referred to a bz+8hzm6rq;y-fn .ess

  The direction of convention current is taken to be the direction (u kn9nyk lb 2(g2i,rx3o1vevthat

  A coulomb per second is the sac/mbl 3mo6q l1me as

  Car batteries are rated in "amp-hours." This is a glnv o444+d .z ppg6(nztg 1ddmeasure of their

  The resistance of a wire is p1ht3n tr,kv 5defined as

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

  The resistance of a wire(:ayrse-sp9lc /obe2 2 - ygut is

  The resistivity of a wire depends ngm9 .mw7 uu1 ,kvl n,mdkb19jon

  Which conducting material has the lor5 eng kq*x.xysvx* u 0kv6(l;rfz;d-west resistivity value?

  Consider two copper wifz qv0ulpkc. 03, teh9zbs.( xres. One has twice the length of the other. How do the resistivities of ths3x0 0h.zuk f,qb9c (zl tp.veese two wires compare?

  Consider two copper wires. One has twice the ln 7 ;iyl-t7l;opsmz2u ength of the other. How do the resistances of these two wirtsliuny-pl7; m;7 o2 zes compare?

  Consider two copper wires. One has twice the cross-sectional area of the,mt)u c1xeax8yoi r4w7g v5 *b other. How do the resistances of these two wires comitr gac*7 u4wv5bm 8 yo,)ex1xpare?

  Consider two copper wires. One has twice the length and twice *:2/m y r q9/1c po*nydzztw3rtklmz5the cross-sectional area omzq/y 9c5t 1orpwkz nm:d 2 *y*3r/ztlf the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius i //:jf /audvmis doubled. By what factor does the resistancevim du: a///jf change?

  How much more resistando j ;5)a,pk9 qiw)p*vn +fjahce does a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the sahq)n wd;ajk , f+ojp*5)ia9vpme material?

  The resistivity of most common metal1wwb5r*/9me+meh go qs

  Negative temperature coefficientss9imv(mf9/d pqff wg: 3p s)e+ of resistivity

  What is 1 W equivalent to cjod8trox,b(d*1u2ziu; :f,e dx a3 k?

  A kilowatt-hour is equiv1ve7 perx)y5 malent to

  If the resistance in a constant voltage circuit is double zko5p2:5azn adzoi 3slr69/2sxdr*b d, the power dissipated by that circuit *irr9 n5 sd:65z3o o azd 2kzpa/b2xlswill

  If the voltage across a circuit of constde/aogm)3 br2 e3gfw2 jc5c n3;ln ad,ant resistance is doubled, the power dissipatclr5c/2w nde3fm 2,dj3ogabn;3a )ge ed by that circuit will

  If the resistance in a circuit wi9a kk)w+-;slllsoxo ,th constant current flowing is doubled, the power dissipated by tkks sl -xawl, +l9o);ohat circuit will

  If the current flowing through a circuit of constant resistat q bfwfi88gy mm* wui0(0:ww0nce is doubled, the power dissipated wt*8mgyf(fiqi:0umbw 00ww8by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what /e/ocd8skv. n percentage is/c8/sed n.vok the power on a resistor affected?

  A current that is sinusoidal with respect to time is r d7/em3qt+t*0:s nuz.xj0 m k2nzslb feferred to as

  Consider two copper wires each carrying a curreg, brrh se-l)b -p)-jwnt of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire grsjb ,wh))b rp-le--is

  Materials in which the resistivnb8j9 5zqz4vvity becomes essentially zero at very low temperatures abz 8vnjzq945v re referred to as

  What current is flowing if 0.67 C of charge pass a z(ynaq 6 rqa) ,hk;tv,a))3h j6vy oexpoint in 0.30 s?

  A charge of 12 C passes through an electroplx9l 1hymmt05 yating apparatus in 2.0 min. What is the avehmt1y9lm yx5 0rage current?

  How much charge must pass by a point in 10 s for mvpjz de/ qdzlz;s 5(+c5r/)athe 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 flow903fx7zq vltging 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 current, has been r8joxaj t)lgn ag,3e5;rnzu y(9q,k e9f hu72left on for 10 min. What ire9o k2fhe5,nlrjgj uaz (x8n q;ytua,3g 9)7s the net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desic6+1dxb,y7jq9mz;s e vy/ep:dq -f sured 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 mucpyfs v-c x eyqqz;b 6+e,u1j7/ dm9sd:h silver? (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 fwz)3m 5k aa, vje9mq bmxi-2p(low through a resistancz)iv, bm5w a3j xmakm e-p92q(e of 330 W?

  What is the voltage across a 5.0-W resistor if the current through its6co:g)cg se: is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current + -uah 0vh+rmbu5m 0cawill flow?

  A light bulb operating at 110 Vmi9 duko le990u+4pjc draws 1.40 A of current. What is its resistanceo9ik9u+ pu4e90lcjmd ?

  A 12-V battery is connected to a 100-W resistor*b co/gi;4z bi.d)k fu. How many electrons flow through th* o)bugb4c.i i/; zfdke wire in
1.0 min?

  What is the resistance of 1.0 m coppe j n0xq:kn-swdzo5(v:m b7rc5 r wire of diameter 0.40 inch? (The resistivity of coppers5 05rdnm:kx w b7 njcvq:z-(o is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 w)qol ku:m7uzr, x /dxgo0z22m long, if the reu,2)0uwzxk g/rdxz2oqml 7 : osistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resis.fbn1.bzl9 j3cdsi2 2i- wesytivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wi6ltz;4bim );/aod -:c5 u ddclof0rpvre (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. Wn*ghzad2 tmz5.kfuup 6 2n h.9hat is its resistivity?

  Calculate the curren. id1rlkex1 8o.u dtu kk- gfu0c94:bat through 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 resistie k.u:4k-uou di1 8k bdl0r c1x.afg9tvity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-sectionse f *twa e/gm+9nxs/*, 1.0 cm x 2.0 cm. What is the voltage drop along its length whease+s*9* mtg wf//xnen 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 radiuz3r ()vm ;mn7dq.,xtkve)gfk s 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 coppewh2s y3xynr1h+ok:1z r 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 resi6 a9cep)+d 5 fndph;3w-.fi zv8fpzbg stance 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 resistivithvk;e tf15v4up0i z+k(krb5 gy 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 r cngf:41ke.bafv )/y pesistance of theapb):knyve1 /gf4f.c 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 throughynf/veds4 ux4;men qh p;y y49tqs,*9 an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it draw?gf 08 5u1tneoc :hvg*t

  A 150-W light bulb running on 110 V draws how mucts auq8 )*wfv8;hm h/oh current?

  What is the nominal resistance of a 100-W light bulb designed to be used in age*l/n rczo+ g9* eq8l 120-V circu zel e/nrg* 8*l+9qcgoit?

  A toaster is rated 800 W at 120 V. What isdmmt, rwn-*k -8vx3f vss9m ,w the resistance of its heating element?tmn-v k ,,mrf9mvs 8-x*wd sw3

  A 200-W resistor is rated a aay7 q/dxc o6(xyak9-t $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rar9k4z-f)anrki c9g)gted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current4 o9y) mmj- qlyun7;ig4gby(p does it draw?

  A lamp uses a 150-W bu*mq8d/x2- trix s ua.ilb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistaie( lu eww2ed*qpp:4(nce?

  How much does it cost to operate ay is tv:2dl*5 9:udshb 25-W soldering iron for 8.0 hours, if energy *: tl ddi:s5u2hvbs y9costs $0.08/kWh?

  How much energy does a 100-W light bulb use wc9obnb )imuq +i)p0g9qj 1 t-in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours.s.*-w65qc).isbbdi hx bc5u 5av s0 uj How much heat energy is h0 d55 i cb wx6vs-q.aji*sbbu)ucs.5 produced?

  A battery is rated at 12 V and 160 A-h. How k 6e3 ua,tky(3)w sawh+rdn)ymuch energy does the battery store?k3k(ah6,3w+ t ena)d yu)wysr

  How much energy does a 25-W solde-vgjd26, x hfqring iron use in 8.0 hours?

  A 100-W driveway light6mv utx0r j-qx ay;l:j6jj4; p bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kil q;xlv;6x pja4jj:u jy6- t0mrowatt-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 e6lq1k5 ys sdh:icd( 7clectricity costs 10 cents per hq6 c:5d1 cd i7s(ylkskWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included th1xwe d6*exuzx7z z.f3 e cost 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/d7.z xxx1u e6f*zez3w 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 opera5fm0w5j t 1miytes 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 dissipated in the heating elementm5t wj 5ymi01f?

  14 A of current flow bs kbcptu(1kxes.0t:b56x 7vs 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 q49o n6z1 79oumsbn u6hl 0ley$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 cphw0 hczu e n3s1bd-l;d189wuw jr98 at the rate of 2.0 hp has 60% efficiency. How much curr hbcp8c893nuul0e j 9w1dd1w s -w;zrhent does 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 r) jzwu4e1sw (6ra0 lvsms current flows t4j0e 1su as( z6lww)vrhrough this device?

  A 500-W device is connected agmhgn:5a( -mto a 120-V ac power source. What peak current flows through thisgg ah:m5-(a nm device?

  A 500-W device is connected to a 120-V ac power source. What iq:ey6kj9 vf s .w0tf/dt+;iaxs the peak voltage across thiq 06.skf wedajix;ft v/: 9+yts device?

  The diameter of a copper wire is 0.081 inch. The maximumf w t;iisdo*1-54u u4cj2h hdhnx12pn safe current it can carry (in 5pc221h uhfn hoi1;*u4j4ixn-dtwsd 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 electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)