Question

Define power and its unit. Express it mathematically where symbols have thei usual meanings. Write commercial unit and SI unit of electrical energy.​

Answer 1

Power is defined as the rate of doing work. It is the ratio of the work done(W)and the time taken(t).

Power(P)= Time(t)/Work(W)

The SI unit of power is Watt(W), in the honor of physicist James Watt.