SOLUTION: The electrical resistance of a wire varies directly as its length and inversely as the square of its diameter. 100 m of wire with a diameter of 6 mm has a resistance of ohms. Eight
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Question 1141201: The electrical resistance of a wire varies directly as its length and inversely as the square of its diameter. 100 m of wire with a diameter of 6 mm has a resistance of ohms. Eighty meters of a second wire of the same material has a resistance of 15 ohms. Find the diameter of the second wire. Answer by Alan3354(69443) (Show Source):