Question

define one watt. name the commercial unit of electric energy. express it in terms of SI unit of energy​

Answer 1

The commercial unit of electric energy is kilowatt hour (kWh), commonly known as 'unit'. One kilowatt hour is the energy consumed when 1000 watt of power is used for 1 hour. 1 kW h = 1000 watt × 3600 second. = 3.6 × 106 watt second. = 3.6 × 106 joule (J) (where joule 'J' is the S.I unit of energy.)