Resistance of a metal wire of length 5m is 20- at 20- If the diameter of the-wire is 0-4mm- what will be the resistivity of the metal at that temperature-

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Resistance of a metal wire of length 5m is 20Ω at 20⁰. If the diameter of the wire is 0.4mm, what will be the resistivity of the metal at that temperature?

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