(a) For a given a.c., `i = i_(m)` sin wt, show that the average power dissipated in a resistor R ove
Channel: Doubtnut
Date: 2020-01-19

(a) For a given a.c., `i = i_(m)` sin wt, show that the average power dissipated in a resistor R over a complete cycle is `(1)/(2) i._(m)^(2) R`. (b) A light bulb is rated at 100 W for a 220 V a.c. supply. Calculate the resistance of the bulb.