Question

The number of free electrons in a wire is 2x10 ^ 28 per m ^ 3.
The runoff velocity of wire is 1.0 cm / sec. Calculate the current density in the wire.

dσn't ѕpαm.....❌❌​

Answer 1

Answer:

3.2*10^7A/m²

Explanation:

V=J/ne

J=Vne

J=1.6*10^-19*2*10^28*10^-2=3.2*10^7