Calculate the impedance of a series LCR circuit having R `= 6Omega`, L = 7mH and `C = 14muF` when connected to an ac source of frequency 50 Hz.

An Ac e.m.f. epsilon = epsilon_0 sin omegat is applied to a circuit containing resistance R, inductance L and capacitance C in series. Write the expression for current in the circuit. Obtain the condition of resonance. In a series L-C-R circuit, R = 60Omega L = 40 mH and C = 400 muF . Determine the resonant frequency.

Determine the impedance of a series LCR circuit, if the reactance of C and L are 250 Ohm and 220 Ohm respectively and R is 40 Ohm.

Obtain the resonant frequency and Q-factor of a series LCR circuit with L = 3mH, C = 27 muF and R = 8 ohm