A device that produces electricity by transforming chemicalz3jga7 bg2 h/h energy into electrical enerbh32a j7/hz gggy is called a

  A car battery

  The total amount of charge that passes through a wire'smhox;a6ni7l - full cross section at anl76onih;m- xay point per unit of time is referred to as

  The direction of convention curcp8c-r. okwjhnk-(;c f)thm7 rent is taken to be the direction that

  A coulomb per second is the samep tb9x97sahi0.v.p*b2 wt pni as

  Car batteries are rated in "amp-hours." Thiwne1,f+u/bx b gync8/s is a measure of their

  The resistance of a wire is tcw p;:j9n;cydefined as

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

  The resistance of a wire ixqy-y- ; j7ir 369cchjzzo0nds

  The resistivity of a wire depends on ur/avlkn5-(9 +7x teyqow*c j

  Which conducting material has the lowest resistivf 2*p6g; ouffk,map+ mity value?

  Consider two copper wires. One has eo(x;z4r 1g0hj;oz es5u z 7oetwice the length of the other. How do the resistivities of these two wires compar7ojhzz;(oesuzo04 51e e xg;re?

  Consider two copper wires. One has twice the length of the other. How dfeip) gefc)8y b)h0 (do the repff cd()eie))0gb y8h sistances of these two wires compare?

  Consider two copper f0uf5 (stnw-owires. One has twice the cross-sectional area of the other. How do the resistancu (of-5fswn0tes of these two wires compare?

  Consider two copper wires. One has twice k 2p08rxueb ls-:d7qwthe length and twice the cross-sectional area ol -08s2r: bqkpewu7xd f the other. How do the resistances of these two wires compare?

  The length of a wire is ;riag.nnbciif5ph7 41mo9( q 2m6cagdoubled and the radius is doubled. By what factor does the r56qig o ( ;a2 cmih19gnia.rfmpcbn74esistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2d 6lijksx9/ 2a.0 cm diamete2xksl6 j9/ia dr rod of the same length and made of the same material?

  The resistivity of mosx w ew(k3j7o8s 5y6sret common metals

  Negative temperature kl54s2 yra9wn coefficients of resistivity

  What is 1 W equivalecwk8 7o)cvhz7nt to?

  A kilowatt-hour is equivalent toa25yn( /qbgky0x4ot5 n nc ui*

  If the resistance in a consta 7/9ksema *fyent voltage circuit is doubled, the power dissipated bykf /sm* e7y9ea that circuit will

  If the voltage across a circuit of constant resistance is doubled, thbt (.)ne7xcoqwr 6 kja5(u;ik e power dissipc wnjrit67 oequ(a( bx);.5kkated by that circuit will

  If the resistance in a circuit w;4dm mxmlf ,4+fraeg +ith constant current flowing is doubled, the power dissipated by that cirf+gemmm; ,a xdl 4+rf4cuit will

  If the current flowing through a circuit .l/b2 c*y auq :is5usdof constant resistance is doubled, the power dissipated by th5b d/sq.u a2l:ic*suyat circuit will

  During a power demand, thyvxro0r;h . .0qsi 7vr.en6 rpe voltage output is reduced by 5.0%. By what percentage is the powerhr env;0 o7iyvsq x0r..p6.rr on a resistor affected?

  A current that is sinusoidal with respect to ti s54l.rrm*ku ime is referred to as

  Consider two copper wires each carrying a current of 3.z)nqs;i, dcxd54crc0b ht. q.un: y k.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller di ,s)kz:0.yc. cqdbi hct; d.nrnx5 qu4ameter wire to that in the larger diameter wire is

  Materials in which ther/ 4xt7xiu)db resistivity becomes essentially zero at very low temperatures arb)xx d/tiu7 4re referred to as

  What current is flowing if 0 ry,uu6s0*4cwh1x5fos a r *se.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0.b44 8oxwlrwb as )nu3 min. What is the average cux)b4wub onl 348arw .srrent?

  How much charge must pass by a point in 10 sub ih/z:rcx*ya 3s /0o 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 flowx5ca 843us a,tvln8 eeing 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 beeivj1.*-wte)nl ; amhx n left on for 10 min. What is mie*)wt la 1n-hv;x .jthe net number of electrons that have passed through the coffee maker?

  In an electroplating process, itdk+ u:,9nxs )0hvb aw*wb- pev is desired to deposit 40 mg of silver on a metal p:ep a d)9hv+ub, b 0wks*-nxvwart 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 charged, and the atomic weight of silver is 108.)

  What potential difference is requiredujt+87,x vu* n1r)(ac,smrnsr 3qdda to cause 4.00 A to flow through a resistance of 330 W?vs u8mrs),n3a1tu xr7rd*n+q dc( a,j

  What is the voltage across a 5.0-W resistor if th7dz ke u2:k4phe current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will f7q,0nip1 4wxpo qt2 w2usmuz2low?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistas l9.sdi,e0u sm4 re4nnce?e4n0 mr9esss4d,.lui

  A 12-V battery is connected to a 100-W resistor. How many elen)q v4 t43iagactrons flow through the witg 4)na q3v4aire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 3,6(wac.i spt /xcuz3 (rucboinch? (The resistivity of copper isps.u3o/ r,izctb3w( 6accxu ( $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistancehxuua*y41 p8b/1 fcir of a circular rod 1.0 cm in diameter and 45 m long, if the resiu 4c *fyhb18/a i1prxustivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper w d; u0h 4ua6tuzxjly01u/ gp*sire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivit, b2g8vcr p r-hlkgf8)2bja 4iy $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 l7,g 1lk 4za9jfkf-id*ik yp/h y ;ug;its resistivity?

  Calculate the current through a 10.0-m .zt59zdj1ey vot)9xfi* rt s1 long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of vfyezid 9)t.xz91jt1t*ors 5nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-se/dwr;a h ooc:h j2gc,-ction, 1.0 cm x 2.0 cm. What is the voltage drop along i ;oh-ohcc d/g,:wjr a2ts 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 radiu) p.c hcx/;we tg6cdh7s 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 copper wire (resktmo.rqou.q-:st al(gr2aa):hp j:9 istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor hal +7m)emm6ojnb4 v r.vs 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 platinum.*nb;noz5u)tcir a: f 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 detnwne ,dlaxrvru *1 :ajo /;7m(ermine the melting point of indium. The resistance of the platinum wire ,n( um* awaoxj7d/e;v1l:nrr 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 thkdj +x+9fvskb8w2a.e p+:0h kgb3k z grough 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 x7x (e:y:h:kh/ifvp l draw?

  A 150-W light bulb running on 110 56h*lvjw 7iy yag02 vmV draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a xb 482jmc2hb2jrs6kd/q do 0a 120-V circ6dbq s2/bdr28h x2aj cojmk 04uit?

  A toaster is rated 800 W at 120 V. What is the resistancek-)+cc)/ jlanke59vok ss,j s of its heating element?/9cle5 ko,as)s cj-+k) svkjn

  A 200-W resistor is rated ates deepb--l a:-8f0ox $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratv zb,aq1 st:m1cpl4qn*w3l* fed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, wha6nrmy8 9toh hzgb-+x g)c ,;kut current does it draw?

  A lamp uses a 150-W bulb. If*ho) myypv)g7 it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its3xfo zaz cwa-b6.w1 t( resistance?

  How much does it cost to operate a 25- d*8wdn: n0ml ram0 y:ie9*pqcW soldering iron for 8.0 hours, if energy ca0*:drw 0cle 9m:npy8dqmin*osts $0.08/kWh?

  How much energy does a 100-W light bulb uf1 rpg40pzvt l f-*;xbse in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. :(m1dfmi-qwvyd,4fj How much heat energy i(wfq:djm4d-, 1m vi fys produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery store6;qj zxofi.3i ktte- 4?i;t6ik4t xz j-. eqf3o

  How much energy does a 25-W soldering 2 m on4l6aljjhbo+m/b:tt 5+giron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per w,2 +1cshubai day. Assuming the power company charges 10 cents for each kilowatt-hour +bcw a1iu,h2sof electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer 3 s6)pgyb djk9plus monitor) is turned on 8.0 hours per day. If electricity costs 10 centj93pksb)6dg ys per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of ru;hrvm w/*ghe65/ -qhlkf( f*z,qvtlinning 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 of the monthly electric bill if electricity costs 8.0 cents per klitev lq 6z/q m;rhkhfvw *-f *(/5gh,Wh?

  The heating element in an electric drier operates on 240 V and gy:9;6 0axqtlfraj k t8enerates 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 pot0 :xr 8;j ktqfal96yawer dissipated in the heating element?

  14 A of current flows through710bpoida akah8-bx j e1e k9- $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsx;-q hl3o+krp $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 muc+c11spktq.m ah currasp1qck1.t+ m ent does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac (ouo); .e waoipower source. What rms current flows throug;a ioueo.ow)(h this device?

  A 500-W device is connected tokvf7: xex8 mztef1o. 5 a 120-V ac power source. What peak current flows through t.e5:z7fxxek f m1ov8 this device?

  A 500-W device is connected to a 120-V ac power sourcd bae(j8wr 9tr)+4weze. What is the peak voltage across this rbw4 e8z ae +j9rtw)d(device?

  The diameter of a copper wire is 0.081 inch. Thee 54/j hlvkusbi10/4klw9tl*a6 r xye maximum safe current it can carry (in order to preve/liehke s6vx tuwjal 4b*9/y 0145rklnt 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 $8.5 \times 10^{22}$.)