What is the formula for mean power?

Answer 1

The formula for mean power, often referred to in the context of electrical circuits or signals, is given by ( P = \frac{1}{T} \int_0^T p(t) , dt ), where ( P ) is the mean power, ( T ) is the period of the signal, and ( p(t) ) is the instantaneous power as a function of time. In a more specific context, such as alternating current (AC) circuits, mean power can also be expressed as ( P = VI \cos(\phi) ), where ( V ) is the voltage, ( I ) is the current, and ( \phi ) is the phase angle between them.