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

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

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

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-

A radio set of 60 watts runs for 50 hours. How many 'units' (kWh) of electrical energy are consumed ?