The average value of current $$ (I_{av})$$ of a sinusoidal wave of peak value $$ (I_{am})$$ is

A

$$ I_{av} = \frac{I_m}{2} $$

B

$$ I_{av} = \frac{\pi}{2} I_m $$

C

$$ I_{av} = \frac{2}{\pi} I_m $$

D

$$ I_{av} = \frac{I_m}{\sqrt2} $$