Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.

An electric iron which has a resistance of 80 Omega is used on 200V source. Calculate the electric energy consumed in kilowatt hour if it is used for 2 hours-

5 tubelights each of 40 W are operated by 10 hour. Calculate electrical energy consumed in 'unit'.

A lamp rated 60W and an electric iron rated 800W are used for 6 hours everyday. Calculate the total energy consumed in 30 days.

One unit of electrical energy consumed is equal to 1000 kilowatt hour.

A 100 watt bulb is used for 5 hours daily and four 60 watt bulbs are used for 5 hours daily. Calculate the energy consumed (in kWh) in the month of January.