A device that produces 2 fil;9 ej9mp3o;nmjo electricity by transforming chemical energy into electrical energy is calmf2omj3oeipn j; l9;9led a

  A car battery

  The total amount of charge that passes through a , ha4c2ulji-jwire's full cross section at any point per unit of time is referred to a2 u4lhijcj -,as

  The direction of convention current is taken to be the direction thgl 5ybhzbx f /(9dx9k7at

  A coulomb per secondw4qtp27(0u-fh.fctj n edom0 is the same as

  Car batteries are rated in "amp-hours." This :h1h+g+jg,zwd hd l;t is a measure of their

  The resistance of a wire is6 j;4ei6rja wq3mv lx: defined as

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

  The resistance of a wi5 nwvotw/kk05)pz)ezx3l e ff hju ,21re is

  The resistivity of a wire dep1g/ f-qk 5w w2mafg0ex ,ymii:ends on

  Which conducting material has the lowest rwms8m01zw y73m:p: u/lei llp q+v-)v6rzzpwesistivity value?

  Consider two copper wires. One has twice the length on3h4k6qksp3 0l ug/d kf the other. How do the resikkk6q/l03s4dph u ng3 stivities of these two wires compare?

  Consider two copper wires. One has twice the length of the other. H.2y7s z3cn srhow do the resistances of these two hsc7r.n2 sz3y wires compare?

  Consider two copper wires. One has 00jgigcyvcbjvoe7*h- v* 2m(+ ; cubx twice the cross-sectional area of the other. How do the resistances of these two wires c0-ucxcbgv7 gj;mv2ojv* i( b*0h+ ecy ompare?

  Consider two copper wires. One has twice the 3qx02h jekx0 dlength and twice the cross-sectional area of the other. How do the resistances of these two wires comkjqeh2 d00 3xxpare?

  The length of a wire is doubled and the radius is doubled. By what factor doescgr rp:e3 2o)r the rpo)r:cger3 2r esistance change?

  How much more resistance does a 1.0 cm diameter rod have comp 1ao4.vqoyx p/ared to a 2.0 cm diameter ro / pqxov.ao41yd of the same length and made of the same material?

  The resistivity of most common m/nbf15 b5ixb)c 7u;iccaam 4 getals

  Negative temperature coefficients of resist),m4wunm0o;pe /x:xanq g* amivity

  What is 1 W equivalent 8fleb9b i3g2muj0/sg to?

  A kilowatt-hour is equivalentddpn zoxb(6z3guo7 .0 to

  If the resistance in a constant voltage circuit is doubled, the powea5jdv5f ) 9t5 mf sv,kgwy loa;0d;x/uz/rut; r dissipated blt/k)drfuwt 5du5;09ysa zfa /5,vvg;; mjx oy that circuit will

  If the voltage across a circuit of constant resistance is doubled, the p0(1i y) crrtfb o( vxbf, wnb963pxpl6ower dissipated, 0()lybvw9np bb (r3tfpx6o r6fcx1i by that circuit will

  If the resistance in w.b o7it ,daby;(70o3ruzw ama circuit with constant current flowing is doubled, the power dissipated by that circui obo30 mww.(rb;i ,7z7adtua yt will

  If the current flowing through a circuit of constsjoom* d;h: nmruepf.t (1)v.ant resistance is doubled, the powe;:. upt snm)ed*(h.omf 1ovrjr dissipated by that circuit will

  During a power demand, the vfspk;nja0 *; sb o7+tmoltage output is reduced by 5.0%. By what percentage is the power on a reofms;bpsan 07*k+t; jsistor affected?

  A current that is sinusoidal with respect to time is referred to +56gqjrfy3 h9llf f k-as

  Consider two copper wires each carrqu3w wh5 .5n,v kf 3pbewv4a+eying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift vee vb,n qup5w va5.3hwf kw43e+locity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low temperatp5 i( d4jnw6 p0fc)c0jt)gli sures i lwg(p06jj5f)cdt0)4p scn iare referred to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 78l otcj . lse0*qjjn.tk)z p)sy:9ee s?

  A charge of 12 C passes through an electroplaupwyk i,)yg0 0ting apparatus in 2.0 min. What is the average current? uyg i,0pkw0)y

  How much charge must pass by a point inp8*maf g84tyq;ll5/hbwbeek r t18 y8 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 hqa+y).bv0:tq qeo f 3if $4.0 \times 10^{16} \; electrons$ 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 f; s9kwmii- +/iyfvq)zor 10 min. What is the net numbvw)z+ m iksq;-y ii9/fer of electrons that have passed through the coffee maker?

  In an electroplating process, sh+gpf z54z kc7g t9xxk( 7e1nit 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 tk( xg7ez47h+k9nxfp cg z15st o run to deposit 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 flo,hls2kjo)b u6 w through a resistance of) hjlok2 b6u,s 330 W?

  What is the voltage acrai-bhs w0 u:4coss a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What c8vc:wzfe 0brdm(2h :iurrent will flow?

  A light bulb operatinym84gly ,t*x ga9eh -2r2vdgsg at 110 V draws 1.40 A of current. What is its resistance?a942 mygx yl r-s,2tvhg8d ge*

  A 12-V battery is connected to a 100-W renare qi0do*-) sistor. How many electrons flow through the r qaod* )ei-n0wire in
1.0 min?

  What is the resistance of 1.0 m c: mj n2ghdz(x3opper wire of diameter 0.40 inch? (The resistivity of copper (d z:jg2n3xm his $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 v6vn9fg3-(c uxhlz(q m long, if the nlcz3xv6-v ( q guh(9fresistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resikm4ve.dlici .f-pt ,dx,r) ;tstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire l; 0ervw:u a9g(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;bn7vg 1szck.axg ,)q-vx*pr, measures 0.040 ohms. What is its resistivity?

  Calculate the current ths4z+u a t yxx4ag.*pv0rough a 10.0-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 n4 yszxa+a.gu40*t vpxichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and ass4a: .o jbphr,, rv8of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 voh,. rpas4b,8r:ajs 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 4v fuvhp98 qd70.50 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 (resisdw/(je bs i4u8tivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a ref tnmh8ipau -52-/ tcpsistance 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 wzoi+ 0/z(3 ;4;fqoc bw*ictbc l*onpplatinum 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 melthati idfj,uu. f )+58cing point of indium. The resistance of the platinum wire is .)tuij + c5 a8h,ufifd$2.000 \; \Omega$ 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 throu341x/+ sc p2feidi n(;lk fayxgh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at gxn7 a *kdhj391200 W. What current will it draw?

  A 150-W light bulb running0c ,aw/is5iig on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bul1v6s3s r*t km(zx(sl qb designed to be used in a 120-V circskr((16vt3qmszx *sluit?

  A toaster is rated 800d.g sp;+x) jfwx1qcv0 W at 120 V. What is the resistance of its heating element?s qxf)vw10 g.x jdp;+c

  A 200-W resistor is ralyfwl *na( c-2ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated ac2 1k fu+dp6ext $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it drtsc, 0+ 4uwp;hn1qpdfaw?

  A lamp uses a 150-W bulb. If it ie1:9ulit gtm ( +tkcgvb3v o uo4;n.t;s used at 120 V, what is its resistance?

  A 25-W soldering iron rk k/8+ 3kpiwa/b :knoguns on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, iflrc078ch x;a6j9e s tl energy costssaecj;h llxt80r 79c 6 $0.08/kWh?

  How much energy does a 100-W light bul.m9 lv;vuct+w7m v rg:b use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How mucs 4l5h56xoe kiuh74wrh heat energy is prohu5r5 47 hls4keio 6wxduced?

  A battery is rated at 12 V and 160 A-h r)n2 gra+(gwzq,mss *. How much energy does the battery store?q*rs 2gz gam)+rn w,(s

  How much energy does a 25-W soldering iron use u1l 4waeuhlimt;i3px k.0*)b in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours perulp f a0mb8 +cna/y-mr 0um07w day. Assuming the power company charges 10 cents for each kilowatt-hour oyb am8n+rm c u-mu 00pfl/w7a0f 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 ele+jr fz.68bxvlr x0(cueim*5vctricity costs 10 cents per kWh, e ub*50l.fvm8vc6jz+(rx r i xhow much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of rnk3.-y yc3cnzs 8 4gfpahm54ounning a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connectio fzccs y .p-n3o3mkhn8yg45 4an 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 kWh?

  The heating element in an electric drier operates on 240 V and generates heat 0x)m,d 6mjup6p uv1utat 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 umu umv up06 jdp,16tx)nchanged. 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 througzk/b:r h f+4 4owqb)bth $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsky/rii,*yhlbsnpb+ 6s/ k m(( $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 muchrubs )ar0xo3 ( current does it draw from a 1r3 s(abr0) uxo20-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source..tel gvt8:hcw1,s xu9 What rms current flows throughlv1wgxut,sth: e 9 8.c this device?

  A 500-W device is connected to a 120-V ac power source. What peak currx78f:nsm+xz8wh nk 5d ent flows through nxz 8fndh5k 7 :xsw8+mthis device?

  A 500-W device is connected to a ,8davij0n rfuccy5qh;+ .hn (19oj no5n o fc.120-V ac power source. What is the peak voltage. 1n +nnfn5hqooi.ha ;dc co9yu 0,8jcr5(jvf across this device?

  The diameter of a copper wirea n71u h zpfwnyt49c:se61;vr 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 oneh 94yenuv6f7ca :1;p zwstn1r cubic centimeter of copper is $8.5 \times 10^{22}$.)