The resistivity of copper is 1.68×10−8Ω⋅m and the resistivity of tungsten is 5.6×10−8Ω⋅m. Can a 2.3-mmmm-diameter copper wire have the same resistance as a tungsten wire of the same length? No, it can't. Yes, it can. Find the diameter of such tungten wire. Express your answer to two significant figures and include the appropriate units.

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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.