The current density of a silver wire is 3.20x106 A/m2 . If the current and the drift velocity of the electrons through the wire is 2.00 A and 3.20x10-4 m/s respectively.. Part A - Find the diameter of the wire and the density of free electrons.

The current density of a silver wire is 3.20x106 A/m2 . If the current and the drift velocity of the electrons through the wire is 2.00 A and 3.20x10-4 m/s respectively.. Part A - Find the diameter of the wire and the density of free electrons.

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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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

The current density of a silver wire is 3.20x106 A/m² . If the current
and the drift velocity of the electrons through the wire is 2.00 A and
3.20x10-4 m/s respectively. . Part A - Find the diameter of the wire and
the density of free electrons

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