(1) A mass of m =120 g of aluminum is formed into a wire of diameter d = 1.0 mm.
ID: 1665773 • Letter: #
Question
(1) A mass of m =120 g of aluminum is formed into a wire of diameter d = 1.0 mm.Aluminum has a
mass density of D =2700 kg/m3 and a resistivity of =2.80 * 10–8 m.A battery is used to apply an
electrical potentialdifference of V = 1.20 V between the ends of the wire for a timeinterval of t = 5.0 s.
(a) Find thecross-sectional area of the wire, A.
(b) Find the volumeof the wire, V.
(c) Find the lengthof the wire, L.
(d) Find theresistance of the wire, R.
(e) Find theelectric field in the wire, E.
(f) Find the currentthat flowed through the wire, I.
(g) Find the powersupplied to the wire, P.
(h) Find the chargethat flowed through the wire, Q.
(i) Find the electric energy thatwas dissipated in the wire, U.
Explanation / Answer
mass density of D = 2700 kg/m3 and aresistivity of = 2.80 * 10–8 m.A battery is used to apply an
electrical potentialdifference of V = 1.20 V between the ends of the wire for a timeinterval of t = 5.0 s.
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