Power

Power
The rate of doing work is called 'power'. Unit of power is joule/second or watt (W) . 1kilowatt = 1kW= 10 raise to 3 W.

746W = 1 Horsepower(hp)

Kilowatthours is a unit used for large amounts of electrical work or energy.

                                           kWh = 1000 watt hours
                                                    = 1000 / 3600 watt, second or joules
                                                    = 3,600,000 J = 3.6 MJ

We pay for Electricity in kilowatthour of energy,
Power in watts = volt / amperes = V/I
Also P = I square R and P= V square / R