14. Two wires of equal length, one of aluminum and the other of copper have the same resistance. Which of the two wires is lighter? Hence explain why aluminum wires are preferred for overhead power cables. (PAI = 2.63 x 10-8 22 m, pcu = 1.72 × 10-8 m, Relative density of Al = 2.7, of Cu = 8.9.)

14. Two wires of equal length, one of aluminum and the other of copper have the same resistance. Which of the two wires is lighter? Hence explain why aluminum wires are preferred for overhead power cables. (PAI = 2.63 x 10-8 22 m, pcu = 1.72 × 10-8 m, Relative density of Al = 2.7, of Cu = 8.9.)

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 58PE: -gauge copper wire has a diameter of 9.266 mm. Calculate the power loss in a kilometer of such wire...

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Question

No.14(I want to know the solution so i will be able to do it.)

14. Two wires of equal length, one of aluminum and the other of copper have the same
resistance. Which of the two wires is lighter? Hence explain why aluminum wires are
preferred for overhead power cables. (PAI = 2.63 x 10-8 m, pcu = 1.72 × 10-80 m,
Relative density of Al = 2.7, of Cu = 8.9.)

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