Notes

Series Resonant Circuit…

Series Resonant Circuit –
(i) X_L = X_C ⇒ Z_min = R, i.e. circuit behaves as resistive circuit.
(ii) V_L = V_C ⇒ V = V_R, i.e. whole applied voltage appeared across the resistance.
(iii) Phase difference, Փ = 0° ⇒ Power Factor = cosՓ = 1
(iv) Power consumption, P = V_rms I_rms = 1/2V₀I₀
(v) Current amplitude in the circuit is maximum and it is given by, I₀ = V₀/R
(vi) This circuit is used for voltage amplification and as selector circuits in wireless telegraphy.