In the balanced three-phase circuit shown in Fig, the current coil of the wattmeter is con...

In the balanced three-phase circuit shown in Fig, the current coil of the wattmeter is connected in line aA, and the potential coil of the wattmeter is connected across lines b and c. Show that the wattmeter reading multiplied by  equals the total reactive power associated with the load. The phase sequence is positive.