QUESTION 2 A cylindrical wire whose circular cross section has a radius of 1.0 mm carries a current of 2.4 A. If the conduction electrons on average have a drift velocity of 0.30 mm/s, what is the number density of free electron charge carriers in the wire?

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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.