Define the electric energy with SI unit.

1.	Define the electric energy with SI unit.
Answer» Electrical energy is the energy derived from electric potential energy or kinetic energy of the charged particles. In general, it is referred to as the energy that has been converted from electric potential energy.The basic unit of electrical energy is the joule or watt-second. An electrical energy is said to be one joule when one ampere of current flows through the circuit for a second when the potential difference of one volt is applied across it. The commercial unit of electrical energy is the kilowatt-hour (kWh) which is also knwon as the Board of trade unit (B.O.T).1 kwh = 1000 × 60 × 60 watt – second1 kwh = 36 × 105 Ws or JoulesGenerally, one kwh is called one unit.

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