In an LRC series circuit, R = 150 ohm, L = 0.750 H and C = 0.0180 µF. The source consists of voltage amplitude Um = 150 V and a frequency equivalent to the resonance frequency of the circuit. (i) Determine the power factor? (ii) Determine the average power delivered by the source? (iii) The capacitor is substituted by one with C = 0.0360 µF and the source frequency is adjusted to the new resonance value. Determine then the average power delivered by the source?