Q: A copper wire of 2mm diameter with conductivity of (5.8×107 1/Q.m) and electron mobility of (0.0032 m²/v.s ) is subjected to an electric field of ( 20 mV/m). Find: (a) The number of free electrons. (b) The current density. (c) The current flow in the wire.

Q: A copper wire of 2mm diameter with conductivity of (5.8×107 1/Q.m) and electron mobility of (0.0032 m²/v.s ) is subjected to an electric field of ( 20 mV/m). Find: (a) The number of free electrons. (b) The current density. (c) The current flow in the wire.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

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Question

Q:
A copper wire of 2mm diameter with conductivity of (5.8×107 1/2.m)
and electron mobility of (0.0032 m²/v.s ) is subjected to an electric field of
( 20 mV/m). Find:
(a) The number of free electrons.
(b) The current density.
(c) The current flow in the wire.

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