If aluminum and copper wires of the same length have the same resistance, which has the larger diameter?

Question

Physics

Xiomara Collins

2 August, 04:26

If aluminum and copper wires of the same length have the same resistance, which has the larger diameter?

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Answers (1)

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Giovanni · Answer 1

R = density*length/area

and its given that lengths are same and R is equal for both.

copper has very high density compared to aluminium. so, for resistance to be equal, copper has to have more cross sectional area (or diamaeter).

so, its copper.