Question
A copper wire and an aluminum wire of the same length have the same resistance. What is the ratio of the diameter of the copper wire to that of the aluminum wire?
Step 1
We know that the resistance of a wire is given by the formula R = Ļ(L/A), where R is the resistance, Ļ is the resistivity of the material, L is the length of the wire, and A is the cross-sectional area of the wire. Show more…
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