Electric energy consumed at our homes is expressed as
Joule
Watt - sec
Watt-hour
Kilowatt - hour
The electric energy consumed at our house is expressed in units, which is equal to Kilowatt - hour.
Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt hours.
The commercial unit of energy is :
(a) watt
(b) watt-hour
(c) kilowatt-hour
(d) kilo-joule