copper wire has a square cross section 2.3mm on a side. The wire is 4m long and carries a current of 3.6 A. The density of the free electrons is n = 8.5 * 1029 m-3.
copper wire has a square cross section 2.3mm on a side. The wire is 4m long and carries a current of 3.6 A. The density of the free electrons is n = 8.5 * 1029 m-3.
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 17P
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A copper wire has a square cross section 2.3mm on a side. The wire is 4m long and carries a current of 3.6 A. The density of the free electrons is n = 8.5 * 1029 m-3. The resistivity of Copper is 1.7 * 10-8 ohmmeter. What is the current density and the electric field inside the wire?
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