A device that produces electricity byfzkjr 0/,m19 oxdeq8k transforming chemical energy into electrical ener rkj/odz1xem q90f,k 8gy is called a

  A car battery

  The total amount of charge tha7p )xtkqi/kb)sj8 2hdt passes through a wire's full cross section at any pt sx)p 28hjkdi )qb7/koint per unit of time is referred to as

  The direction of convention current is tauhfib 6v2;rc 44 qsdbg.e/ wn1ken to be the direction that

  A coulomb per second isa,+-2)vp1a x0wkpk(v dld fg m the same as

  Car batteries are raxvls23b;e w:a ted in "amp-hours." This is a measure of their

  The resistance of a w)wt90 l0u b/qo9ub8m n)ouah 42rhew aire is defined as

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

  The resistance of a wire bp6ev lz * dl7r* gnb7b;d8r.kis

  The resistivity of a wire depennih.0, nzmsfy0xzz40lr p*(a ds on

  Which conducting material has the lowest resistivity valuewr*v; zy p:2sk?

  Consider two copper wires. One has twice the lenk55u+ns t8bz q:ti3 svgth of the other. How do the resistivities of tzt38iu:bvk5 s n5 qst+hese two wires compare?

  Consider two copper wires. One has ct0fn m52rybf)h f +x.-gjse* twice the length of the other. How do the resistances of these two wires compare?-jbr)*x0hns2ef f m. gy t+c5f

  Consider two copper wires. One has twice them5eim j :*i540ru6f lnh ,yyyd6iz bn6 cross-sectional area of the other.bh ilne,u665idmm5:yr njz6 y4*fyi0 How do the resistances of these two wires compare?

  Consider two copper wires. One has t(yc 4lj) d0d3dr;nuznwice the length and twice the cross-sectional area of the other. How do the resistances of these two wires compare?;n j)4cu0 3dld(nr ydz

  The length of a wire is doubled and the radius i+eb9gwmav 0jd9j/3 ads doubled. By what factor does t+ b3d0ge9vmwja9/da jhe resistance change?

  How much more resistance does a 1.0j:y )54 0nugqps5 jisl xg(n;l cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made xi sg:ljjnq; 0s(upl54y5ng)of the same material?

  The resistivity of most co nr+i4pit,kqv5- )y8z wsf6vb mmon metals

  Negative temperature coefficients of resistivity 1fg:ts/ rs rd+zn43sj

  What is 1 W equivalent yjx ;nm,l:wi2 .cwg+w to?

  A kilowatt-hour is equivn*:k06b*vp z4 hl pjxdalent to

  If the resistance in a constant voltage cie( sgdbgn)x:hd q9iesr0, k38rcuit is doubled, the power dissipated by td8 )0 dr(g3ns eib,s:hqkg ex9hat circuit will

  If the voltage across a circuit of cf5 v9d5fr(jy3f+9s4: xymbs4 vnnjw zonstant resistance is doubled, the power dissipated jvw49 fbfnx5y dv54yrs3(9fnm:jsz+by that circuit will

  If the resistance in a circuit with constant current flowing is gat i d.r*vv.1,*zb8fk qorn*doubled, the power dis8t.*f*k*oga,z diq1r bvr .nvsipated by that circuit will

  If the current flowing through a circuit of ci g ct.(qqtw93onstant resistance is doubled, the power dissipated by that circut qq(g.9it 3cwit will

  During a power demand, the voltage output isfgm*5kk d kxxe1)vsrg3+8wcv2m+8eqxgm2 k ; reduced by 5.0%. By what percentage is the power on gr8skv;eggck wfmm+kxd q *+ x21vk3x58m2 e) a resistor affected?

  A current that is sinusoidal with respect to time is referred to a+ sp.g8;4udva) jtr mss

  Consider two copper wiresh+s,t q9: x gmvdcyd.7j1/y ao each carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wi h 1/qty d9cvj xs,.a:ymgdo+7re to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zerokn sp99)jp+4zvc3ey 7fnd wul5v(mw* at very low temperatures are re*(nmc+wk5)yd4 e wuzv pnpf7j9lsv93ferred to as

  What current is flowi9wxc6 kcf6m m kh(2b bl.fu.*eng if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating appr;qo)mjt-* 9 z1zq.t q71kutst:haoraratus in 2.0 min. What is the average curretht. z;s1qqq ra1 z9)*k:r7mo tot-junt?

  How much charge must pass by a point ;wbs v--ii:k xzld5i1in 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 flowinf-6h tang*-h1x:1 kxlb5cg0-pczr q gg 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 left7lvu*.jiakb1 txm/;m on for 10 min. What is the net number of electrons that have passed through the coffee makl1a.btmujk 7*mixv ;/er?

  In an electroplating process, it is desired to deposit 40 mg of eo*2bb* bxj;r 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? (The silver ions are singly chargedeb 2bxr *jb*;o, and the atomic weight of silver is 108.)

  What potential difference is requi: dp+: f -pkr goovex286aevu/red to cause 4.00 A to flow through a resistance o p2ovrg: f/ u6:8vd+pxkao-ee f 330 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5.9+cit 5 -vq7 9ezjzilcrvw-u -0 A?

  A 4000-W resistor is connected across 220 V. What c 3 s6rgjfl*;tuxg .hk2h jf,e/urrent will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resisr us9pl:( mqwwwb;+w5tance?(sw wbrw;m9:q puw l+5

  A 12-V battery is connected to a 100-W resistor. How many electrons flowvj:o(mf+o* fjsa m 3/v through the wm3oa oj/fv *+sfj(v m:ire in
1.0 min?

  What is the resistance of 1.0al)wbzjz 49m r+)6 i*byxo7vh m copper wire of diameter 0.40 inch? (The resistivity*l7z4)a i o)x9b mbzyh+wjrv6 of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter*za9+ik eqf 4kbi, )rg0p*fqi and 45 m long, if the resistivitybigz q4i 0) rkiaq,fkf*e*+ p9 is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivitga 5 v5hxa:k+)/fnb wkpnio14y $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wi/gnbds*n j7 m)re (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. What is its u.g:v jk7mda4w6zq82b jq8 uhr0pkg 6 resistivity?

  Calculate the current through a 10.0-m long 22 gauge :z b4vakm fa27zg1:fgwxl u26dt /zr: (the radius is 0.321 mm) nichrome wire if fbz4 ::/m xw 6lvgzd7f gku:2aaz1tr2it 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 cm8l 0emu 2d2plhe 7tu-v long and of rectangular cross-section, 1.0 cm x 2.0 cm. What i2l8v-hu7 t uedel 0mp2s the voltage drop along its 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 and a resistivi2btppm3-vv + qty 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 wire (resisl3 irz z+:kec(tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance of 5/ m 2h-k mkwm-yb u.4dn *p.lid1etyy$18 \Omega$ 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 platinumeq 7n2o 4lwwcc+ ldzfy(8-tq9 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 ind7hu7zesj)zwi7 j ) r4nium. The resistance of thej zuw) s7 zren7i)hj47 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 vx 3vvcyv panc+9y(yr-d.8c+ q4 3heeough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 12 tolqtur r0so dp9s.5+,rr6x:3ubg;i00 W. What current will it draw?

  A 150-W light bulb runb www czgqrsw mqu)h6:83 *gmh7nm9 2:ning on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designeddv8,zv qs;:qg07b m eq to be used in a 120-V circuit 8bv7mz: e;d sqvq0,gq?

  A toaster is rated 800 W at 120 V. What is the resistance of ib963d +ya yvctuzn5b 4ts heating elemena 9cud6v 3ntbby+y4z 5t?

  A 200-W resistor is rate9hs d1ykxg1pcq4ja ,)d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r-ny ka16j) p3eil mul)ated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. I1 uzb;ic4g)v8 e 6lqitz4b/t vf it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 Vn/f50nq xmd8b , what is its resistance?

  A 25-W soldering iron runs on 110 V. Wha6tano .d w23d8w lulf3t is its resistance?

  How much does it cost to operate a 25-W so w.snqthgz/l m36q8c0fw, u)fldering iron for 8.0 hours, if energy coz.u,3f/ 6wng0 l )sm8wfq hctqsts $0.08/kWh?

  How much energy does a 100-Wo h ljn05was;b out-;5 light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 6fanoj.w,;n uz, ;int 120-V line for 2.0 hours. How much heat energy is produced ,.; un6o;iw ,jftannz?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery s:z.:zm qu jf3ktore?q zuz:.:3kjmf

  How much energy does a 25-W ; b*0z )shuft5rn.bi n,kvxr(soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power xypxniroh(usj 31u;o oz(7,; company charges 10 cents fzoxnu ;j(uxs ;i(7r p3,1hyo oor 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 day. I ibfbnzl2wb4 *5zo27 ;h dqbe)f electricity costs 10 cents per kWh, how much does it cost to run the computer ah*;zfw ble)4 b bn57oib2q2dznnually?

  The monthly (30 days) elecn 0 gcbtblav*k46o: rh2,obi* tric bill included the 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.h gk:b*6, a20 toorclb4n v*bi0 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 drier operates on 240 V andq:v.6 q7 +vm5wpje8zl8 vm mnm 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 reavq8 w.l7v5qmmp em +n :z8j6vmlity, 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 throu io) u*.u0-sfi whmra/gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs1 q2hg/ v5pzts $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% efficiency. How much curo)nf nx ,j1 e/:ydg*xhv3ry)b ren)rh: ox 31x,v)edyyg*fbnj / nt does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connectz-o,xoipr5i5+wuy3 uojm g 6) ed to a 120-V ac power source. What rms current flows through5y+pj-gor5)um uxi3 , 6zwooi this device?

  A 500-W device is connected to a 12jy:c -e0fvcq-,opuuxmh( e)3 0-V ac power source. What peak current flows through this - q3phuc-jo,mv(xyefe):uc 0device?

  A 500-W device is connected to virf,d*(r8 h,jdkit/ a 120-V ac power source. What is the peak voltage across this device?,f/ *8rki tvdj(,hi dr

  The diameter of a copper wire isvhh:yj;em- ;i/jq wy 6 0.081 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 velocity of the hm /h;i6vjywjy ;-eq:electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)