The current supplied to an air conditioner unit is 5 amps. The air conditioner is wired using a 10-gauge (diameter 2.588 mm) wire. The charge density of the wire is n= 8.48·1028 electrons/m3. Find the magnitude of a) current density and b) the drift velocity.

The current supplied to an air conditioner unit is 5 amps. The air conditioner is wired using a 10-gauge (diameter 2.588 mm) wire. The charge density of the wire is n= 8.48·1028 electrons/m3. Find the magnitude of a) current density and b) the drift velocity.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 31P: Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the...

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Concept explainers

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.

Question

The current supplied to an air conditioner unit is 5 amps. The air conditioner is wired using a 10-gauge (diameter 2.588 mm) wire. The charge density of the wire is n= 8.48·1028 electrons/m3.

Find the magnitude of

a) current density and

b) the drift velocity.

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