In an a.c circuit, the instantaneous e.m.f and current are given by <br> $e = 100 \sin 30 t$ <br> $i = 20 \sin (30 t - \frac{\pi}{4})$ <br> In one cycle of a.c the average power consumed by the circuit and the wattless current are, respectively :

Question

( A ) $50, 10$
( B ) $50, 0$
( C ) $\frac{50}{\sqrt{2}}, 10$
( D ) $\frac{1000}{\sqrt{2}}, 10$