Question

What is the power factor of an L-C-R circuit? Explain on the basis of power factor that an ideal inductor is a wattless component

Answer 1

At resonance, Inductive resistance (XL) is equal to capacitive resistance (Xc) -The Power factor is nothing but cosine of phase angle between voltage and current. -For RLC circuit, the pf is also given by. - Therefore, the value of power factor of L.C.R circuit which is in the state of resonance is unity