The density of free electrons in a cylindrical metal wire is 7x1048 m. The diameter d-12.23 mm and carrying a current of I- 6.93 A. the drift velocity (in jum/s) of the electrons in the wire must be (charge of electron =1.6x10-19 C)

The density of free electrons in a cylindrical metal wire is 7x1048 m. The diameter d-12.23 mm and carrying a current of I- 6.93 A. the drift velocity (in jum/s) of the electrons in the wire must be (charge of electron =1.6x10-19 C)

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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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.

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The density of free electrons in a cylindrical metal wire is 7x10-8 m. The diameter d= 12.23 mm and carrying a current of I- 6.93 A. the drift velocity (in jum/s) of the electrons in the wire must be
(charge of electron =1.6x10"19 C)

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