A small but measurable current of 1.2 * 10-10 A exists in a copper wire whose diameter is 2.5 mm.The number of charge carriers per unit volume is 8.49 * 10^28 m-3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed.

A small but measurable current of 1.2 * 10-10 A exists in a copper wire whose diameter is 2.5 mm.The number of charge carriers per unit volume is 8.49 * 10^28 m-3. Assuming the current is uniform, calculate the (a) current density and (b) electron drift speed.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 15P: If the current carried by a conductor is doubled, what happens to (a) the charge carrier density,...

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Question

A small but measurable current of 1.2 * 10-10 A exists in a
copper wire whose diameter is 2.5 mm.The number of charge carriers
per unit volume is 8.49 * 10^28 m-3. Assuming the current is uniform,
calculate the (a) current density and (b) electron drift speed.

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