Question

In a house, if three bulbs of 100 w , 60 w and 40 w are used 2 hours per day, how. Many units of electric energy will be consumed in 30 days? Please Solve this in writing

Answer 1

total energy consumed in 1 day=2(100+60+40)=400Wh=0.4kWh
thus energy consumed in 30days =30*0.4=12units or kWh