A metal wire has a length of 40.0m  and  a diameter of 0.500mm .The entire length of wire has a resistance of 1.4 Ω. Find the resistivity (in Ω · m) of the metal.

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.