Ans. KILOWATT-HOUR
The amount of energy delivered by a power of one kilowatt m one hour is called kilowatt-hour.
One kilowatt-hour (1 kWh) = lOOOWxl hour
= 1 000 Wx (3600s) \ kWh =36x 105J = 3.6MJ The energy in kilowatt-hour can be obtained by the following formula:
watt x time(in hours) The amount of energy in kilowatt-hour = - ——— 10QQ —— .