A copper wire with AWG18 (generally used in wires connecting lamps) has a nominal diameter of 1.02 mm. This wire is connected to a 200 W lamp and carries a current of 1.67 A. The density of free electrons is ?, ? × ????electrons per cubic meter. Calculate the modules (a) current density; (b) drag speed; (c) convert the drag speed to m / h.

A copper wire with AWG18 (generally used in wires connecting lamps) has a nominal diameter of 1.02 mm. This wire is connected to a 200 W lamp and carries a current of 1.67 A. The density of free electrons is ?, ? × ????electrons per cubic meter. Calculate the modules (a) current density; (b) drag speed; (c) convert the drag speed to m / h.

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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