Question

An electric oven rated at 500w is connected to a 220v line and used for 2 hours daily. Calculate the cost of electric energy per month at the rate of rs.5 per kwh.

Answer 1

P=500w
V=220v
I=p/v=500/220=2.2A
Bill= 220X2.2X2X3600/1000
= 3484.8X5
= 17424 rupees