A 12 gauge copper wire has a cross sectional area of 3.31 x 10-6 m2. What is the drift velocity of electrons in this wire when it carries a current of 2.5 A? (Recall the example from the text that found the number density of electrons in copper available for carrying current is 8.5 x 1028 /m³.)

A 12 gauge copper wire has a cross sectional area of 3.31 x 10-6 m2. What is the drift velocity of electrons in this wire when it carries a current of 2.5 A? (Recall the example from the text that found the number density of electrons in copper available for carrying current is 8.5 x 1028 /m³.)

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 16P

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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.

Question

3. A 12 gauge copper wire has a cross sectional area of 3.31 x 10-6 m². What is the drift
velocity of electrons in this wire when it carries a current of 2.5 A? (Recall the example
from the text that found the number density of electrons in copper available for carrying
current is 8.5 x 1028 /m3.)

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