A device that produces electricity by transforming c*z d3l hkxehv h-wi30+hemical energy into electrical energy is called h *-dh0eiw l+ v33xhzka

  A car battery

  The total amount of charq,czxm ofhiwj s6,0(3ge that passes through a wire's full cross section at any p 3sw i6jxh0c,foqz(m, oint per unit of time is referred to as

  The direction of conventiora ;9 8htv.nhy(rbs-rn current is taken to be the direction that

  A coulomb per second is the same asxg ;*br-:mk)c8i f8 7 btp cutjqtpo23

  Car batteries are rated in "amp-hours." This is a measure:fbi qjokdo xi.s53u672oem(ali 5*x of their

  The resistance of a wire ivl+xc*5t2 vqas defined as

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

  The resistance of a 6d(7ciey5ic *wmc,)( j gp k;mh(uqrhwire is

  The resistivity of a wire depends gw5 n/up+q t4wsa; h8d:ab cz9on

  Which conducting material +gf;kmxb0m1 u has the lowest resistivity value?

  Consider two copper wires. One has twice the length of thlkh;luorx-ootvas4/v5+ 91mjuo b3vfb o8 7 ; e other. How do the resistivities of these two wires c h5otov 87 b bu91fxoav r3lu+;k/-;l4vjmsooompare?

  Consider two copper wires. One has twice the length of the other. How do tvmt yr l0/iqv:s.x* /bhe resistances of these two b. rt / sv*y0xqlvi/m:wires compare?

  Consider two copper wires.iod8uy/ni.h- ):)jy7 ifava z One has twice the cross-sectional area of the other. How do the resistances of-)vy .n)ozjdfi a8 7hi /yiua: these two wires compare?

  Consider two copper wires. One has twice the length and ty)u 7ji j-9xtuswz;*mwice the cross-sectional area of the other. How do the resistances of t)zux ymji t swj7*;u9-hese two wires compare?

  The length of a wire is doubled and the radius is doubled. By wha ef l587y4ctbqu ;,ilpt factor does thep ib;fqlte847, luy c5 resistance change?

  How much more resistance does a 1.0 cm diameter rod have compajh w(ak4 bf+b9red to a 2.0 cm diameter rod of the same length and made ofk94b( hbw fja+ the same material?

  The resistivity of moi9*xnfg4pfkbx ip hhqsf5,128lw2s 9 st common metals

  Negative temperature coefficients o*hd97z f: ka tecgep*31o:n yef resistivity

  What is 1 W equivalent to rv:)pi ):wrqvl aqy3o9x 75rd?

  A kilowatt-hour is equivalent to)ns dddz53qu(

  If the resistance in a constant voltage circuit is doubled, the power di4 0s8bmxvai7b)ov*pej+ x9yv ssipated by that cir8v) jv7s4xxb e9ab*ov+m y ip0cuit will

  If the voltage across a circuit of constant resistance is dou;,g-grp*: .zn l5 vgtcanvg +jbled, the power dissipated by.*g-gc, znpj gvn:lv5ra g+t; that circuit will

  If the resistance in a circuit with constant current flo( :7vf6nmu 2lkxz yl,u g-nm.kuns/: owing is doubled, the power dissipated by that circuit wikn/ n,zvkxl m:u26ygf u:o.m (u-ns 7lll

  If the current flowing through a circuit of constant resistance is doubl;28wuyw+ jq sj0- miwded, the power dissipated by that circuit wil +8 20 yujiqwmjs-dw;wl

  During a power demand, the vqt7mf hm 3k6)xoltage output is reduced by 5.0%. By what percentage is the power on a resistor af37kxtfq)6h mm fected?

  A current that is sinusoidal with respect to ti z3rq0d;urj51w/qx a mme is referred to as

  Consider two copper wires ea 0fkdk*5q(fi a6kdb.j ch carrying a current of 3.0 A. One wire has twice the diameter of the other. The5f0dq* .idkkf a(j6kb ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essenp1b d;m(l n5 vu2z)fuztially zero at very low temperatures ar2mbzl u1dv;5fz() unp e referred to as

  What current is flowing if 0.67 C of charge pass a point in jl12 zxms:(u -3e cppv0.30 s?

  A charge of 12 C passes tby-j k3a2dxcci.+res qc89t: hrough an electroplating apparatus in 2.0 min. What is the avera+a2 q-s9xtcjc b3ie.crkd8 y:ge current?

  How much charge must pass by a point in 10 s for the currenb9 4yqt pnaa;7t 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 if zei7 6jte0d*ewd*fh8;dy t k)zj-b/ r$4.0 \times 10^{16} \; electrons$ 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 for 10 min. We;g h ksmrprgwg4*++f 4p*a8 xhat is the nethxg;es*rk a +ggw*mrp8p4 +f4 number of electrons that have passed through the coffee maker?

  In an electroplating process+f ilycpxz.ux5 c1mgps*-(vy; wd3j;, 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 allofiju+5pd; pvxzsl 3y(cc. 1wy-x gm;*wed 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 req oeh;+vs gid:-4 fl5uuuired to cause 4.00 A to flow through a resistance ofvg ;ehfi+:4lou usd5- 330 W?

  What is the voltage across a 5.0-W resistor if the curreng5r j ukt-:vah6wa .xwl1f :u(t through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curren so 4v(fst7fb:wo8h a:t will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistance6 h( .gqb qr0dzhcb/5k? khb.0r/ch5bgzd q( 6q

  A 12-V battery is connected to a 100-q) ki6fnkw kb;i hb vk(uh*)(.W resistor. How many electrons flow through the wire ;k(hkh(v 6kqfu.ib)wk*n) i bin
1.0 min?

  What is the resistance of 9df u/jnym95, ay7g sg1.0 m copper wire of diameter 0.40 inch? (The resistivity of ,yn 9gs9 f5 md7j/gayucopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, ifu xs/9 tomxfg);m+ lij-lqmol06l6m ; the resistivitmqotmm ifml0l/gx6); 9 o lx; +suj6l-y is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (pc29mxj0xgh (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 (rewb v* 6e*bts7hve4c. csistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m lo 1g o06zafwi5yng, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0ixcf 59)gdibrs1q9b 2-m long 22 gauge (the radius is 0.321 mm) nichrome 15 c qfb9b2irdxisg)9wire 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 rect rx h)8bv0m0ltangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length whhxbm0 v)lr0 8ten 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 fxt+okul*ox+a;53f; ps;bdas 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 (racc*63a :m0n pk /zvanesistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has axkn t;)5o:xar kr b/0e 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 p+g5y2qf co ,uhlatinum 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 melti:)w) ec bpdkn(ng point of indium. The resistance of the platinum :nbcdkew) (p)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 through sf9f ta+a6rf :an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cur qw;m6c: nh5,va3g0m (ww cbmxdg 8-aorent will it draw?

  A 150-W light bulb ru42 /fhonrwjj9nning on 110 V draws how much current?

  What is the nominal resistance of a 100-W ligh3v*7 rv jhidc0:9j68hm z8lyrbpf9xjt bulb designed to be used in a 120 d pvlxy0r :bz8c3jmf *9hh7j9v ji6r8-V circuit?

  A toaster is rated 800 W at 120 V. Whc0acz2 wwdfp2u05ap-r *kt b4dw2 h;hat is the resistance of its heating elemen-dz buwp42;2chw a frpc h50adwt*2 k0t?

  A 200-W resistor is rated a .mu;9iejca) d;ozwg0 t $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rate)w7*bxf sywpz-2e2 exki,l e-;3s s nwd at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what cub, tsk/ xhsa(,rrent does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resisrke m;4.cfqv+ ozf32ttance?

  A 25-W soldering iron runs on zjy5(h 6df7plj .8t6bc-inon110 V. What is its resistance?

  How much does it cost to operate a 25-W solderingejke2eplof)2 *ji;: g iron for 8.0 hours, if energy cos ;jo2 2pefgekj:) *leits $0.08/kWh?

  How much energy does a 100-W light bulb u. inetj(fjm ,qt tr+0sbm4m7 )se in 8.0 hours?

  A 1500-W heater is connected to a 120-V line fccvllx:/m t u, /r8 wf7ahi91yor 2.0 hours. How much heat energy is producc:8v9hir/allx cmw7tf/, 1uyed?

  A battery is rated at 12 V and 160 A-h. Hwc5dz7zr9 unljh,7jq cbot5c1;p9 v;ow much energy does the battery store?uj 5 ,;bdpn rwco zcc7v 75t;j1lzh99q

  How much energy does a 25-W soldering iron use in 8.0 hourik il.(2 enh9is?

  A 100-W driveway light bulb is on 10 hours per day. Assuming h5n:a p dlx a1n7ev22nthe power company charges 10 cents for each kilowatt-hour of electricity used, estimate the a hn 2xp5l:nd1vae7 n2annual cost to operate the bulb.

  A 400-W computer (computer plus monito jctf j k;)s brg20sq: b1v;ksvad/.ctk4u,l.r) is turned on 8.0 hours per day. If electricity costs 10 centj;dk0s.v.1s kk: ;bq4l cr /f2 j)ba,vtugctss per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a 1xh9/0kppe 5hd l dj+q7cc7xicentral 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 dihx/x 0571d pji7kce+9 phdlc qd 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 anreo/msx e *7meg 0,fv:d generates heat at thm,*e vgxs7foerm0/ e :e 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 power dissipated in the heating element?

  14 A of current flows throug3:bkpdx- j* tbh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs uo ly msezemucb4e8hy51; 6-4 $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 haseh4x z49i/wd 24vb.kcdck 9yw 60% efficiency. How much current does it draw from a 12 x wdwki.hz 9dev/b4kc44 c29y0-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms currenttkwx 0ued e5p3s**ao 5 flows tsa5 wp0*dte*3ou xk5ehrough this device?

  A 500-W device is connected to a 120-V ac power source. h,i gkijrsc669vd( 9 a What peak current flows through this devii69grk 6 as,(9i jhcvdce?

  A 500-W device is connec(k)w,-h szb- u9t 3jjfc3mpy sted to a 120-V ac power source. What is the peak voltage acr3)sf(3jkuw,9s -my -hc bjtpzoss this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe cux3)o8es uw1sgm6m6 iorrent 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 onmiw866sso 1g3u )exo me cubic centimeter of copper is $8.5 \times 10^{22}$.)