Question

DEFINE POWER.GIVE ITS FOIRMULA AND UNIT

Answer 1

power is the rate of doing work or transferring heat, the amount of energy transferred or converted per unit time. ...

the unit of power is the joule per second (J/s), known as the watt

Answer 2

Power is the rate of doing work or transferring heat, the amount of energy transferred or converted per unit time. 
Formula = Work/ time
Unit = Joule / sec or watt.