Write down the various forms of expression for power in electrical circuit.

Explanation

The electric power P is the rate at which the electrical potential energy is delivered,
`P=(dU)/(dt)=(1)/(dt)(V.dQ)=V.(dQ)/(dt)`
`[dU=V.dQ]`
The electric power delivered by the battery to any electrical system.
`P=VI`
The electric power delivered to the resistance R is expressed in other forms.
`P=VI=I(IR)=I^(2)R`
`P=IV=((V)/(R))V=(V^(2))/(R )`