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How many free electrons does the wire have

Question: A wire has a current density of 17 A/mm². If the drift velocity is 4.8×10-8 m/s, how many free electrons does the wire have in a 1.0 m length? The radius of the wire is 1.0 mm.

A.) 2.2 * 10^33
B.) 7.0 * 10^27
C.) 2.2 * 10 ^27
D.) 7.0 * 10 ^21

Please explain answer.

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Solution Preview :

Prepared by a verified Expert

Physics: How many free electrons does the wire have

Reference No:- TGS0701153

Have a Question? (oR Write a Review)

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Physics: How many free electrons does the wire have

Reference No:- TGS0701153

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