Question

What is the commercial unit of electric energy?
(a) Joule
(b) Watt second
(c) Kilowatt hour
(d) Kilowatt per hour

Answer 1

kilowatt hour is the commercial unit of electrical energy.

Answer 2

Answer:

Option C is correct – Kilowatt Hour.

Explanation:

Denoted as kWh, Kilowatt is equivalent to 3.6 megajoules. This is the energy that is obtained when work is done at the rate of 1000 watts in one hour. The electricity used by commercial establishments, industries, and houses are usually measured in Kilowatt Hour (kWh). For example, a 100 watts bulb when used for 1 hour will use 0.1 kWh (100 x 1 / 1000).