Power and its units:
Power is a measure of the rate at which work is done or at which energy is converted from one form to an-
other.
Power P = energy usedt/taken or
P = work donetime taken
The unit of power is the watt, W, where 1 watt is equal
to 1 joule per second. The watt is a small unit for many
purposes and a larger unit called the kilowatt, kW, is
used, where 1 kW = 1000 W.
