A device that produces electricity by transforming chemic6bmc.j6nq/s0u xp4jks5: zv eal energy into electrical ener :u mb0vs4p 6qxjsezc6/n.jk5 gy is called a

  A car battery

  The total amount of charge that passes through a wire's 53 ;rwvn(fnhqfull cross section at any point per unir wnvh3f q;n5(t of time is referred to as

  The direction of convention c; 9ji930qetu6 b;qq:uosw ybaurrent is taken to be the direction that

  A coulomb per second is thyaprf l o+80k9/uty1e e same as

  Car batteries are rated in "amp-hours." This is a mf -)2su+,e6upq xsigpeasure of their

  The resistance of a wire is def 2rvekzdf. )m:)2tm(kju7g o fined as

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

  The resistance of a w p5(:u ohya3.wa a6xlgn/ rnf7ire is

  The resistivity of a 5 bj25ip:u 4ot sxe30xlfl/ ujwire depends on

  Which conducting material has the lowest resistivity val cz*g)i tx)p,sue?

  Consider two copper wah*64 idmcmo0x*wh74it me 0e ires. One has twice the length of the other. How do the resistivities of these twoeme 7x*dhwc 4 i0h0oim6*t4ma wires compare?

  Consider two copper wires. One has twice the length of the other. Htjf9-rj/u ql +ow do the resis+q-urfj l/jt 9tances of these two wires compare?

  Consider two copper wires. One has twice the cross-sectional are g.r pe: kfgx;5;pwd5 gp6pon72a g-aga of the other. How do the rn2ok ea7 ggpdag- 6p5xpr5g :.;gp; wfesistances of these two wires compare?

  Consider two copper wires. One has twice the lengtxv:p344 ;mfufj 0ssy 8s add8oh and twice the cross-sectional area of the other. How do the resistancud;80 44s3:yp 8sj fxvofmsades of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what 2 ly8.k s5wioxe/) chvfactor does the re).lkh w8yivosc /5x2esistance change?

  How much more resistance does a 1.0 cm diaa au(9 e/acax3meter rod have compared to a 2.0 cm diameter rod of the same lengta e ca(9a/ux3ah and made of the same material?

  The resistivity of most common met,rxszy ywur( inju,mz+om*ti1 7 i21.als

  Negative temperature coef 8ny+ld6p7irh0 ewx) mficients of resistivity

  What is 1 W equivalent toj-n :j2e 0ubpa gm+td1?

  A kilowatt-hour is equ+l -u(keauzu 4ivalent to

  If the resistance in a constant voltage circuit is doubled, the poweb44qe fbd1.sjeto g;6r dissipated by q.d sbbe6etgj41 4 ;fothat circuit will

  If the voltage across a circuit of constant resistance is dpplw bid *86t-oubled, the power dissipadb*-pi8 ptlw6 ted by that circuit will

  If the resistance in a circuit with constant ;e+jtr0kvv3xvjdm)w(f5 fr/current flowing is doubled, the power d f ( wkr;+v r)jv5t/f3j0demxvissipated by that circuit will

  If the current flowing through a circuit of ckqlil4h4* fb.onstant resistance is doubled, the power dikiq h4l.b4*l fssipated by that circuit will

  During a power demand, the voltage output is 3v du kznr(din+j:eh/edw+6, reduced by 5.0%. By what percentage is the powered+:3,i+vhw6(zk /uejnn rdd on a resistor affected?

  A current that is sinusoidal v+)hc:ofr +-v ;geut,n.p 7dhc e* uojwith respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twvs v(zc (-)tcsjr ah(6ice the diameter of the other. (ch 6( sc)st av-jv(rzThe ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes z .-/knz0syt dessentially zero at very low temperatures zk tn0/z.ysd-are referred to as

  What current is flowing if 0.67 C of charge p4 tfi;n/x0)ro9 iv avuass a point in 0.30 s?

  A charge of 12 C pass bozzv5a.bz 1.es through an electroplating apparatus in 2.0 min. What is theva z.b 1bz.z5o average current?

  How much charge must .n(a h5 xr8 b6arin3uspass by a point in 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 flowing if7k lac5yb6 k- l9jl fgew)m 4(nqbs3j/ $4.0 \times 10^{16} \; electrons$ 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, h1de:*n(lwuig am0x k 0as been left on for 10 min. What is the net number of electrons that have passed through thd0kumxl*0:( gw a nie1e coffee maker?

  In an electroplating process, it is duy b(2h1+cj cd1vv*isesired 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? (The silver ions are singlj1 2i*c+h(u svydbc1vy charged, and the atomic weight of silver is 108.)

  What potential difference is q7 q.9yflom)kc/ evjzy m/2h0required to cause 4.00 A to flow through a resistance of 33hk)/ c7qylzoje2mqv.myf9 0 /0 W?

  What is the voltage across a 5.0-W resistor if the current t9o5wzjo2tqfg7: fi v* hrough it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will fwvm /-ifrn d7+low?

  A light bulb operating at 110 0ey8y-m qd 7hr7reo6k V draws 1.40 A of current. What is its resistance?m yo7err 7yqd6-eh 0k8

  A 12-V battery is connected toyqe fnz(;/j q .o.yfy6 a 100-W resistor. How many electrons flow through the wire in6z;. .(/fofej qyq yyn
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The frlt li gs,4:zw/g dovc 4;08 4zwuocu:2q9pmresistivity of copperp:ic0d ggolqts4f ,; v : w8294z /uoul4zrmcw is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in rfii4/*9jyswy7 up:ul0 ;gxz diameter and 45 m long, if the resistivit*gw04ui 9;p s :zfy7x/uljyriy is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppevj cs:va5z3li7 /f 80 owatp,fr wire (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 (resistivity lb 5 +t.wffk4i qbv:6zkc;d(v$1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.0400ww gv3ce z+wkb 94ihpbu(h+4gx n. +x ohms. What is its resistivity?

  Calculate the current through a 10.0-m lfsto1 3 l 5wiw40bh 0d:9 -fwpxufwh+yong 22 gauge (the radius is 0.321 mm) nichrome wire if it is contubhw5 f9y3i4wfx +h-1d0:opwwf 0slnected 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-sect3 c4r5,nz5afwpb 1n)o2ragltion, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 51t2onr34gbac ar5 f lzp,n)w A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radfqy8h cktfh1y*/3. vrius 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 wir-v 9dvoy,c 1ygyxpb j +a nn0h35d6itr)hsy1*e (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 resistance-ne 4ik9szkb: 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 rexpvj)57tnwt(l kef(s f0pi k6 )1fw8:ry o 0idsistivity 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 po:a3n0tyq . arrint of indium. The resistance of the ply.rt a q:03arnatinum 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 throughobx :b7ygui(h9p9/f ; raq9yp an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What currel:a1d / ib*vm.79psmkqmdl n3 nt will it draw?

  A 150-W light bulb running on 110 V dm7m6 bo/2baad raws how much current?

  What is the nominal resistance of a 100-W light bulb designe)+8zsykx* p rd 5:ae/6ou zwqpd to be used in a 120-V circs8*dz / :qopyp rxzekw+)6au5 uit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heatiddej 1to; dlg-v 86gag 6s:zu0ng element?;1 :osge l-ugv0jzd6gt86 add

  A 200-W resistor is ratnj azif*ohk:3 v9, pl+ed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ra+el; ak5pbii vrf1 z/+ted 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 itm6pus7b3ov br8;x/e0/f gqb s draw?

  A lamp uses a 150-W bulb. If it is usoc9a2q 5b0olhed at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resista 6.ras8+fus j9p;q rhhy2;lnnnce?

  How much does it cost to operate a 25-W soldering iron vaswxf3r5 x; fvh +mbwfkv-/-i5s(t,for 8.0 hours, if energy cost5 5b avf-/f;( mvk,-r3sf +st hxiwvwxs $0.08/kWh?

  How much energy does a 100-W n52 gbi5h 0gkslight bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line ford n,m9xc vxj s7qf8k.. 2.0 hours. How much heat energqc,kvxs.. mn79 x jdf8y is produced?

  A battery is rated at 12 Vtxl7dy28md4 qak0t; mxd bv43 and 160 A-h. How much energy does the battery store?xd820 ;mv d4l7 dmtaqbty43x k

  How much energy does a 25-W soldering iron use in 8.0 hours?b7 w hya0pi+a)

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power compan4jo / ek:3n z7e5ib)qnu z;lany charges 10 cj) 37 /iaqnek4:zu;ne 5on lzbents for 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. If elh gg*1 6-xki qf gmrur.8md3(ktdj-c0ectricity costs 10 cents per kWh, j-mgf 0 dr8rxig1*3gmc.dtk k 6h(u -qhow much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost w rcq:7//g m98i nntocof 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 muct nwrn8q/oc7c g9/m i:h 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 o3 1bo/vfd jdr:p(6kgrn 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 ojfrbpd(d1 6kro :g/ v3n its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flowkyqmzvz h:p3kbt 7 co p8;:7q7s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costo -qnu 1. lervi0kw(/ms $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 hpn95 : kgveunu19jj(es has 60% efficiency. How much current does it draw from a 120-V line? (unse(u 9jn 9j5ke :g1v$1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current floyg8k;y( ,r; vdafwa5iws through this yk ar;, ifvd8yag w5(;device?

  A 500-W device is connected to a 120-V ac power sourc(i yjds *)ivmc, m+b8me. What peak current flows through this debvysi+,)8(j * idm cmmvice?

  A 500-W device is connected to a 120-V ac pobd;zi l)sv * y*y;q37go luo(rwer source. What is the peak voltage across this deq7yds y uzobr 3g*o*;i);lvl(vice?

  The diameter of a copper fysa 9wb6,ink;tvr0 o1v(g q3k5rb*twire is 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 electrons? (The number of electron carriers in one cubic centi , t kt9igyokqbf(was5v13n6*v0;rbrmeter of copper is $8.5 \times 10^{22}$.)