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What is the ratio of two wires having same length, but diameter of first wire is just doubled that of second wire?

What is the ratio of two wires having same length, but diameter of first wire is just doubled that of second wire?

Grade:12th pass

1 Answers

Khimraj
3007 Points
6 years ago
I think youare asking about ratio of resistance
as R \propto l/A \propto l/d2
where l is length and d is diameter of wire.
Then
R1/R2 = (d2/d1)2 = (1/2)2 = 1/4

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