(a) Write Joule's law of heating.   (b) The lamps, one rated  100 W, 220 V  , and the othe
Channel: Doubtnut
Date: 2020-04-19

(a) Write Joule's law of heating.   (b) The lamps, one rated  100 W, 220 V  , and the other 60 W,  220 W V, are connected  parallel  to electric  mains supply. Find the current  drawn two  bulbs from the  line,if  the supply  voltage is 220 V.