Question

what is power state its commercial and si unit of electrical energy

Answer 1

Electric power : It is defined as the rate at which work is done in maintaining the current in electrical circuit.
electrical power , P = VI = I²R = V²/R.
S.I unit of power -Watt and commercial unit of power - Horse power
The electrical energy consumed in a circuit is defined as the total work done in maintaining the current in an electrical circuit for a given time.
S.I. unit of electrical energy is Joule whereas commercial unit of electrical energy is kilowatt hour (kWh).