What is the commercial unit of electric energy? Obtain the relation be

1.	What is the commercial unit of electric energy? Obtain the relation between this unit and the SI unit of energy.
Answer» The commercial unit of electric energy is the kilowatt hour (kW·h) and the SI unit of energy is the joule (J). 1 kW·h = 10³ \(\frac{J}{s}\) × 3600 s s = 3.6 × 10⁶ J [Note: The kilowatt-hour is often called simply the unit. (See the energy bill, i.e., the electricity bill.)]

What is the commercial unit of electric energy? Obtain the relation between this unit and the SI unit of energy.

Answer»

The commercial unit of electric energy is the kilowatt hour (kW·h) and the SI unit of energy is the joule (J).

1 kW·h = 10³ \(\frac{J}{s}\) × 3600 s s

= 3.6 × 10⁶ J

[Note: The kilowatt-hour is often called simply the unit. (See the energy bill, i.e., the electricity bill.)]