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Electron drift velocity

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Calculate the drift velocity of electrons in a copper wire given the current flowing in it, its diameter and density.

A copper wire 2.5 millimeters in diameter is carrying a current of 10 amperes. Assume one free electron per copper atom and find the magnitude of the drift velocity. [Copper has a density of 8.92 grams/(centimeter)^3, an atomic weight of 63.5 grams/mole, and Avogadro's number is 6.0 x 10^23/mole.

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Solution Preview

Please see the attachment.

I = 10 A
A B

R = 1.25mm vd

A' B'
vd

Let us consider a free electron in the conductor moving with a drift velocity vd towards right. The electron enters the section AA' and travels a ...

Solution Summary

This solution helps calculate the drift velocity of electrons in a copper wire given the current flowing in it, its diameter and density. Step by step solution provided.

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