Example 7 8 A sinusoidal voltage of peak value 283 V and frequency
50 Hz is applied to a series LCR circuit in which
R = 3 W, L = 25 48 mH, and C = 796 mF Find (a) the impedance of the
circuit; (b) the phase difference between the voltage across the source
and the current; (c) the power dissipated in the circuit; and (d) the
power factor