A device that produces electricit)4ng,fr cjzb. y by transforming chemical energy into electrical energy isbgr j )4f,c.zn called a

  A car battery

  The total amount of charge that passes to 2r . ollybeg2g:r-e9hrough a wire's full cross section at any po e29 r gyg2el.o:l-borint per unit of time is referred to as

  The direction of convention current is taken to be the direction tb:b d1v+ceqt*j i.4vnhat

  A coulomb per seconddhyg0w:cpdnf9, 5t)zf t3d0 w is the same as

  Car batteries are rated in "amp-hours." This is a measure44)ggb;bz uvt 5fp m y-+-hyig of their

  The resistance of a wiregyx: 8iw)3 w; o+ fjyc,xuf(jx is defined as

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

  The resistance of a 1esd)+o8 gsdq8h w9r c.t+ w7 x dkozze1wtv3,wire is

  The resistivity of au;tdh0f cdd4go53t+yg v pv;bs4*72akp b b; n wire depends on

  Which conducting material has thhsu *lih lf3x2w 9n 0rdmwn-/:e lowest resistivity value?

  Consider two copper wires. One has twice the length of 8lp1s ba)f n:kwo gg0*nexowz:8m(0r8w. bgithe other. How do the resistivitiebwggp:lax8gwb0 .z e8 ks r1):n(fon8i0 w*oms of these two wires compare?

  Consider two copper wires. One has twicer7xj6 kt 3a9s8m6 kp+y)ipmwh the length of the other. How do the resistances of these kpjrmx6 )map 9w3ks+t 876y hitwo wires compare?

  Consider two copper wires. One has twice the cross-sys 1jjsblpjt oo1 u87r+b (1n2ectional area of the other. How do the resistances of 1tj jupb 1y 2(jr+ons7s bol18these two wires compare?

  Consider two copper wires. One has twice the)ng azpw04dr1 ns u0xh.q 5i7a length and twice the cross-sectionanis u d0aw0)han4x5.7pqgr1zl area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor do eaj z.9hpta4s4wnrzbb m 4v1x74b+6ses the resistax41m4 7 en jsb4vaz94+a tsbh6wpb. rznce change?

  How much more resistance does 0r,,(saiws1kerigs l;s9(o e a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of th 1keisw(g;sl 0 ,aiser ,9(rose same material?

  The resistivity of most common metals7ry26 wpe9rv z

  Negative temperature coefficients50masd(pxy0z y nwu: : of resistivity

  What is 1 W equivalen:v e,e1me i2lyt to?

  A kilowatt-hour is equivalent vzkzjpl3vqvtt24 )7+d/)eg0xy - vj mto

  If the resistance in a con2;sysppgm1i9j( 3m f y0yu)rpstant voltage circuit is doubled, the power dissipated by that circuit will3s(u2giy r) pm fj10y m9ypp;s

  If the voltage across a circuit of constant resistance is doubled, the powervg 1a 4oodxo bpdxl61z,2 s1s* disslosa1sxp1o4* d,2 1xvg 6 zdobipated by that circuit will

  If the resistance in a circuit with constant current flowing is doubly.w/brh2 b 1(9h,fluzyfumt8 ed, the power diss( yhy ur9 h/fl1z2m8,u fwbbt.ipated by that circuit will

  If the current flowing through a circuit of constant resistance i3ue+ u;2yi0aus ld5was doubled, the power dissl ae u5iauu;3sy+0w2dipated by that circuit will

  During a power demand, the voltage output is reduq 5ro1qh 7ztw;ced by 5.0%. By what percentage is the pow7qq1 ;rho tz5wer on a resistor affected?

  A current that is sinuiv18g0/l4s 2yk rn7qvpb :tx asoidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire 8m *f3 tyvd r0,eenk6xhas twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter mke,yx38fr0n vd*6t ewire is

  Materials in which the resistivity becomes essentially zero at very low8 rva84 zy83qmjhdg-j temperatur mz avj-4qrhd83 gy88jes are referred to as

  What current is flowing if 0.67 C of charge passsmaa v6p v0b:4(5d,hgv q.2rtw1o vqr a point in 0.30 s?

  A charge of 12 C passes through an electroplatingur9 jkpzkq4ff)l4*)0mk s:n +qjc)pp apparatus in 2.0 min. What is k nkkmjf) 0jp*)+uspr: 94qzf )ql4cp the average current?

  How much charge must pass by a point in 10 s for the current to besohz 9d 83yonlz0 fi(q03m6fv 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 flowime3-1vxy xu f1ja2bx/ng 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 left on vbj:4h a6x)25f dmcwtfy+9o rfor 10 min. What is the net number of electronfwrt4j do)bxh62mfa+ y:c59v s that have passed through the coffee maker?

  In an electroplating prg* ow:*cy j)8idoa .iha:aa o: pv6vg4u6a*upocess, it is desired 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:io8v hg u)dap*6wy:ou.6 coiapgaa*: va*j4 are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resista *omwbn5m4u s9:fnb(xnc(mnn*4foms9b5 u: wxbe of 330 W?

  What is the voltage across . 1knuq 9jx,f4 dcaqj+a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will f v03oiogym/h ;low?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resiua* mjp+jb +ht ti1,,fstance?tj1+h*ujm,b+f ia t,p

  A 12-V battery is connected to a 100-W resistor. How many electro/z7 ipsji 3ei/ns flow through the s/ziii /73epjwire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 in.3,s)ep.ym air icb*mch? (The resistivity of copisp *.b.m)ier3yc , amper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circpvj3l-9a+b +;m9 jh vxvpx l/xular rod 1.0 cm in diameter and 45 m long, if the resixaxbvxmv+jp; 3v/p l+l-jh 9 9stivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wireou6(p49oa dkwi, /iqw (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 (resistiv nm68 ovzon 9jfyhs28x(r pe9)ity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resistivity 2+hs*wi fd yg;mpur60?

  Calculate the current through a 10.0-m long 22 gauge (0/dwu6xg0lh a the radius is 0.321 mm) nichrd/x0lg ua hw60ome wire if it 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 cm long and of rectangular cross-section, 1.0 cm x 2.0 cm.n5 vv5vv8v d4h What is the voltage drop along its length whendvvv58h5 v n4v it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrohb)z : (3c4ar: t(n. mqhxsyleme wire has a radius 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 cop pzp+:5m8zwtez.xu r 8per 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 resistanczyt n.6dz zhbqx +r9f565qlqgjp67* ce 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 ofogcr v0s 5mlg(z+m(:h 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 mewy;, b;9ge ni1)m 9prithz p4xlting point of indium. The resistance of the platinum wiregib;1tphy 4;9mx)z e9,rnwpi 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 throughap e3g4uawok d3+9v5o d31 em0syra c3 an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What co0 a1pb0l1xl eurrent will it draw?

  A 150-W light bulb running on 110 Vqn7,i/idl7. 2ths /pzb,knc 1 glp)f vf)qk 3v draws how much current?

  What is the nominal resistance of a 1/ 10kz n;cghjo00-W light bulb designed to be used in a 120-V circc /zh jnk;o0g1uit?

  A toaster is rated 800 W at 120 V. What is the resistance u)mu.d*:jqxnpri. me(, z ol3of its heating elemen :(xn 3m*),j eoqimzl.pru.udt?

  A 200-W resistor is 6 phuoih5r5/crated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at 4ej)a24rl eu +isb/ol $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current do9jcu4jwayd)ul, aoiy9okcq/a;+,iq a 3-s (qes it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, qnkbzb0 /zn-j3i5t7d ;jcwz /what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistanc(r5p qycuvu+h;xn7t6 e?

  How much does it cost to operate a 25- g)0r1bud ch1lzl i-tqdna.7-W soldering iron for 8.0 hours, if energy cost-z d1 qn71albrhu t-l.c0di)gs $0.08/kWh?

  How much energy does a r 809o:cyn oxog6e:xq 100-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much hee8.si do2 iwr671udo jat energyiiod jr1wo .u7e8 6s2d is produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the batt4jxr4gcke -e4ery store? kcg xer4j4e4-

  How much energy does a 25-W soldering iron use-(+i fh:*ulanb7yq0zjzyr p3 in 8.0 hours?

  A 100-W driveway light bulb is on 10s/ cqxkrr0jv ip: nc66*12yyo hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimr :6v qn06xs*1yrjcpk/ c2yoi ate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If elbl5m c r.2soc1(muf+ivg:y iub.rw 69ectricity costs 10 cents per kWh, how much does it cost to runu: rr+ vc.u m1y6fs ci.m5ogb9iw(l2b the computer annually?

  The monthly (30 days) electric bill included the cost of running a central airjd3 p +rcdq 8y8dtt/,n-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 8t q ,+ntpddc/8yjd r3items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an elect.lcl:zo,i eh v53f 7azw qu(f.ric drier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element sol5 f ea,(. lzwu7i:. cqzhfv3horts 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 element?

  14 A of current flows th4)v:lh1glpmau3 twn -rough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costy9v8a x1xv0 uis $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 ;v5pt 4t4+t8bjl vx qo2.0 hp has 60% efficiency. How much current does it dt; o8lq t44vt5xbjvp+ raw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac powerap p ltm (+*2fwm)oym/ source. What rms current flows through thi wm*y/(+ p)2pmmlaotfs device?

  A 500-W device is connected to a 120-V ac power source. What peak current flowsnurfo :h7w hvmy,5i3) t5 n7)viufo hhrw :3my,hrough this device?

  A 500-W device is connected to a 120-V ac power source. What is te+inl fhqg 5- lybh/jst:2+h 1he peak voltage acrosbhishen +hqgl2 1:l/t5f +yj-s this device?

  The diameter of a copper wire is 0.081 inda( ilj2e/gtqc4 9v52cp z h/ f8)zrydkir:b0ch. 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 centimeter of copper if ir4 az hpyj9r0)d8(q/czikt2b v:ld5/c2e gs $8.5 \times 10^{22}$.)