Question

what is power?please explain

Answer 1

the rate of work done in per unit time is known as power
(Power =work done/time taken)
the SI unit of power is watt
the power of 1 watt is a rate of working of 1 Joule per second
(1 watt=1 Joule/1second)

some formulas for calculating power

P=V×I
P=I^2×R
P=V^2/R