The equation of AC voltage is $E=220\; \sin (wt+\large\frac{\pi}{6})$ and AC current is $I= 10 \sin (wt+\large\frac{\pi}{6})$ The average power dissipated is

Question

$(a)\;150\;W \\ (b)\;550\;W \\(c)\;250\;W \\(d)\;50\;W $