A copper wire of radius carries a current of

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

Problem

A copper wire of radius

0.5\,\text{mm}

carries a current of

2.0\,\text{A}

. If the number density of free electrons in copper is

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

, determine the drift velocity of the electrons.