If $\phi$ is the phase difference between the instantaneous values of voltage V and current I in an

Question

If $\phi$ is the phase difference between the instantaneous values of voltage V and current I in an AC circuit, then the average power loss over a complete cycle is\

Professor PC Thomas Classes · Answer

Average power loss over a complete cycle is $\mathrm{P}=$ VI $\cos \phi$\ Where $\cos \phi$ is called the power factor.\