Question

Two lamps, one rated 40 W at 220 V and the other 60 W at 220 V, are connected in parallel to the electric
supply at 220 V.
(a) Draw a circuit diagram to show the connections.
(b) Calculate the current drawn from the electric supply.
(c) Calculate the total energy consumed by the two lamps together when they operate for one hour.
[In my book the answer of this question is given as 356.4kJ, please explain me how this answer came.]​

Answer 1

Explanation:

As 1KWh=3600000j

if u round off 356.4kj is nearly 360 KJ

hope it is helpful...