Rob S.

asked • 04/07/19

3 ohms=k(5)/0.02^2

The resistance of a wire varies directly as its length and inversely with the square of its diameter. If 5 feet of wire with a diameter of 0.02 inch has a resistance of 3 ohms, what is the resistance of 50 feet of the same wire with a diameter of 0.05 inch?

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