A device that produces electric3 m x9niag4;lmity by transforming chemical energy into electriclm;nimxa 439gal energy is called a

  A car battery

  The total amount of charge that passes through amygk9m9 p lbd*ey fs0tdmbq7y ,5k+4 - wire's full cross section at any point per 9s4mmd59 ,gb-p l 7ytk+yyk qb de*m0funit of time is referred to as

  The direction of convention current is taken th n,aho 0du:1ao be the direction that

  A coulomb per second is vvcu:rkjl l06w3 p5,qthe same as

  Car batteries are rated in "amp-hours." This is l;r8y9d 9yq zmj)my4lnpg;h1 a measure of their

  The resistance of a wire is defined amt59 5jf,v0 qgi:mz xts

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

  The resistance of a wirs-x *xy)sj0hd e is

  The resistivity of a wire depe5g;cer7 e(nd4omz my6b m6s-ns/1yz wnds on

  Which conducting material has the acudy9u+l n:sa -dzu.hj8 e7+ lowest resistivity value?

  Consider two copper wires. One has twice tflu0x2jw(kab7fo8wzjt . 5k78vb s0the length of the other. How do the resistivities of these two a0f. f tb 52zjl87(wwvk jxb0s8otu7kwires compare?

  Consider two copper wirenne3/y dx/6obloi,g4q 0 ju15 megdafj 15qb;s. One has twice the length of the other. How do the resistances of these two o;y i5 1 3qbonejlbqa6x m14df/g,nudegj/0 5wires compare?

  Consider two copper wires. One has twice the cross-sectional area of the oth-f, clb.b f.rner. How do the resistances of these lr. -bnc b.ff,two wires compare?

  Consider two copper wiresxc 1*9 fqjq(zsa75wyc. One has twice the length and twice the cross-sectional area of the other. How do thej q9fwa*5q1z7( cysxc resistances of these two wires compare?

  The length of a wire is doubled au) b-cs6fb2 ):dyb (jakzzw -gnd the radius is doubled. By what factor does the r2-(:u-ydz 6) w j sgbk)afzbcbesistance change?

  How much more resistance does a 1.0 cd9yl-- mroru +3xlz b1m diameter rod have compared to a 2.0 cm diameter rod of the same length and mo x- m+lrd1zry3ub9-lade of the same material?

  The resistivity of most common mxwr dw6o /z 7 ;*(fui6traf5emetals

  Negative temperature coefficients of rkse*f)6 mg rwx.5j3zfesistivity

  What is 1 W equivaleh (.r.ysnknshm+: ko/nt to?

  A kilowatt-hour is e6 cv;l.rzwtp 3quivalent to

  If the resistance in a constant voltage circuit is doubled, th e 1tjj*-qoth.e power dissipated by tqoj eh-t tj.*1hat circuit will

  If the voltage across a circuit of constant resistance is doubled, the vipi.v7 3evf z)g*f8qpower dissipated if8vv*73vzi .qg )pef by that circuit will

  If the resistance in a circuit with cons9r3:dz1x tqh ntant current flowing is doubled, the power dissipated by that circui9rq3dzt 1n:hxt will

  If the current flowing through a circuit of const ;+oby:dx ih na7chp,-ant resistance is doubled, the power dissipated by that ci:h-xbi ,c7o; a+dph ynrcuit will

  During a power demand, th* kjbso(d* e5:vaccoy,d .d x.vkv;b/e voltage output is reduced by 5.0%. By what percentage is the jcdcovb (5x/ddo,syb. *:e*.a v vkk; power on a resistor affected?

  A current that is sinusoidal with respect to 0bzevc -k16aano, t(ftime is referred to as

  Consider two copper wires each carrying a current of 3 tl,)., t*irhexjbai s -yn9xj,ws6e* .0 A. One wire has twice the diameter of the other. The ratio of the.elr b- ,t,at*yxxsjin) * ,jh9w6eis drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resis3 i3u;wh 8zqg.vj-f fotivity becomes essentially zero at very low temperatures are gv h-iw.3 83 jfz;qoufreferred to as

  What current is flowing ifhk15pi4u1r xp 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through (e .iyo(mr1fjc6b is.omteb 7 6:zq3ian electroplating apparatus in 2.0 min. What isi zyr 1.mif otj((es66.7i o:b mc3eqb the average current?

  How much charge must pass by a point in 10 s for the currliy *dhq3m 9*dent 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 px3(k-gkb wygw 39:pe 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, myq e33 heeo za2e4 i4jr9q9.b)h(mzm has been left on for 10 min. What is the net number of electrons that 9ehoqmj3y9h4 43maieq)b r(mz. e2ze have passed through the coffee maker?

  In an electroplating process, it is desired to depfa:a:uu uwm l(4r)r( b;(vitc osit 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 depo(wr(lc ): uuab(;fimautr4:vsit this much 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 flow through l07h;5hqnfo zrh jg63a resistance of 3hghf60jhr l3oq5n7 z ;30 W?

  What is the voltage across a 5.0-W resistor if thewcgul t,1 ;q3w current through it is 5.0 A?

  A 4000-W resistor is connected across 2;k.)oml / qfkny)dq5d 20 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistandpnlfqxr* o4n0m;i66 g:*z ikce?k0xnz6d iq*;6 milgp4ron:*f

  A 12-V battery is connected to a 18u0dik6 k nunh-fjb *;00-W resistor. How many electrons flow through-hdku8f0n*nb iuk;j 6 the wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch sr ghk1qaq 8 fca9j;8m9c w21nea qd,0shvz20? (The resistivity or e8 mq9;2ka 0s 1nqwg2j9vhzf,0sd1cqca h a8f copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 *rqg08tht 8dhp b4 t4ecm in diameter and 45 m long, if the resisp8htge qd8ht4* b4 tr0tivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (re96u7aa:v ni,r+mq4 3k rkoavp sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (res*tzpp uz p zxa /bsm//c)u:m87istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ohane a3:h-w ct5ms. What is its resistivity?

  Calculate the current through a 1 st36.c,;manchi 8cv e0.0-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 nichrome ie6vm as.3;,c 8tcinch s $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cues;e;da;n rp 08 l3xdm x 2.0 cm. What i ;lau 0e;rde8sdn3; pxs 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 resistivit7t1mif * :z 722ee jk,olsetmi6n0ounot/*o dy 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 (resistivity c 0dtsj9vx1z6$1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance of o-qjz 2c,-ewoah2f 7eshl:7t w8d0fe$18 \Omega$ 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 coef3spibnv )ps;1z *y 0bto1y(6z;uvgpvficient 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. Thevzw g8q0(qlk(*bul+ u resistance of the platinum *l +gub w0qzlu(8kq(vwire 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 throug,,nu6f*u mkqh cphn x4g:,bh:h an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What awn237t4di pi current will it draw?

  A 150-W light bulb running on 1a g-nptw dw3.app0 b2010 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in m+mqyb:trq7. a 120- 7brt+:.ymmq qV circuit?

  A toaster is rated 800 W at 120 V. What vmo9::x jkkzo.( iakj0 .ygp:.o*nj uis the resistance of its heating elemenyjjk: x z(a.po:* kgmkj0 i9n.o:vu.ot?

  A 200-W resistor is d sw i1*2h,qia7t:bwn+khtt0 rated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is hir.qj 6 24ss4zhs;. 1utdxxvrated 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 9.d7qeg tw:r 89xhocydraw?

  A lamp uses a 150-W bulb. If it is used at 120 V,kp ozq6a85ob q 74sa:q what is its resistance?

  A 25-W soldering iron runs on 1a(0nozfm8hu4a ) ()j)-vxsflc wl oc;10 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, i,s ap4g,30e*rwsnlrox(uu23fr5 difz; 1o uy f energy cosu52u3 r;sw oa*,ireo0u g,1 sff4d y(zl3rpnxts $0.08/kWh?

  How much energy does a 100-W lighsf1wrhb0fnz yu+7c68t bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line :o (tqmy d9h3ufor 2.0 hours. How much heat energy is pq(:tu9o 3hdmyroduced?

  A battery is rated at 12 V and 160 A-h. How much ener +ay*mr,y lg(dgy does the battery store? (m dya*,rgyl+

  How much energy does a 25-W soldering iron use in 8.0 ttx7u+d 7n:cohours?

  A 100-W driveway light bulb is oo-ci w)d;. kadn 10 hours per day. Assuming the power company charges 10 cents for eac - .w;iddoak)ch kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is6 szjwu)o11to h nrh ijb7.g0* turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how muc zj.* 71nu0si o1o6bjghrwth)h does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost oft2-uqpmjl lo97 + 6natzg .;mm 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 7p ;+ua- mnzj 26l9 gtql.motmthe 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 and generates heaz-cb 10si p)2atxqvwusf3 +6lt 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 temperatuwtfv3+ l )c2pxzi6su qsab-1 0re.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows thr ux4yq.af -4me 8olo(jt+2he rough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs;5/2dx, veut)dx3 l nfn; lqi+mopq9h $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. uys+s4 gb ; nrurr1/x; How much current does it draw from ausugnyrr/xb ;;1s + 4r 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to ar. jvz8/ rdxf6o+ 9nzi 120-V ac power source. What rms current flows 8rorn.6 d/vx +zi jfz9through this device?

  A 500-W device is connected to a 120-V ac power soukk70kdm uje98p*da z7rce. What peak current flows t8ajmuezk* 7 k9ddp07khrough this device?

  A 500-W device is connected to adox/99k3en4ev;f p k h 120-V ac power source. What is the peak voltage across thi4pee/ kxdvko9h n9 3;fs device?

  The diameter of a copper wire is 0.081 inch. The maximu5qg3yxk 0 f +owrj,*mim 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 ele0ikwm*rq 3j,x+f 5yogctrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)