Name the quantity whose unit is:

(a) Kilowatt

(b) Kilowatt – hour

(a) Kilowatt is the unit of power. Power is the rate of doing work. It is the amount of energy consumed .The SI unit of power is the watt (W), which is equal to one joule per second.

(b) Kilowatt-hour is the unit of energy. Energy is measured by the amount of work done, usually in joules or watts.