Question

Define power and discuss how to determine power

Answer 1

In physics, power is the rate of doing work or of transferring heat, i.e. the amount of energy transferred or converted per unit time. Having no direction, it is a scalar quantity.

It is determined by:-

1) P = V I

2) P = I^2 x R

3) P = V^2/ R

Answer 2

power is the rate of doing work

P = I²r