A copper wire of radius carries a steady current of

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

A copper wire of radius

1.0\,\text{mm}

carries a steady current of

3.0\,\text{A}

. The number density of free electrons in copper is

8.5\times10^{28}\,\text{m}^{-3}

. Calculate the drift velocity of the electrons in the wire.