Physics

Problem

In a semiconductor bar, the drift velocity of charge carriers is

1.0\times10^{-3}\,\text{m\,s}^{-1}

. The bar has a rectangular cross-section of

0.5\,\text{mm}^2

. If the hole concentration is

1.0\times10^{29}\,\text{m}^{-3}

, find the current flowing through the bar. a)

4\,\text{A}

16\,\text{A}

8\,\text{A}

0.8\,\text{A}