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Define power. State commercial unit and SI unit of electrical energy. An electric heater of 400 W works for 2 hours. Find the electrical energy units

consumed in a day ?


hi there!
Power is defined as the rate at which work is done upon an object. 

S.I. Unit of electrical energy is Joule.  

kwh is the commercial until of energy.

energy consumed :- 
400/1000 kwh *  2 hour = 0.8 kW h

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