A series RLC circuit has a resistance of 4 Ω, an inductance of 60 mH and a capacitance of 30 μF. Determine (a) the resonant frequency and (b) the Q-factor of the circuit. A coil has a resistance of 10...

A series RLC circuit has a resistance of 4 Ω, an inductance of 60 mH and a capacitance of 30 μF. Determine (a) the resonant frequency and (b) the Q-factor of the circuit.

A coil has a resistance of 10 Ω and an inductive reactance of 25 Ω when connected across a 250 V RMS, 50 Hz supply. Determine the current taken from the supply and the power dissipated.