The coil in Figure 5 (R and L in series) is supplied at 230 V, 50 Hz. A capacitor C is connected across the supply to raise the overall power factor to 0.95 lagging. Determine (a) the power factor of the coil alone (as a decimal), (b) the capacitance C required (in µF) and (c) the reading of the supply ammeter after correction (in amperes).