Three bulbs A, B and C with marking (100 W, 200 V); (100 W, 200 V) and (50 W, 200 V) are
connected to the supply voltage 200 V as shown in Figure.
Effective power of bulb A:
(1) 72 W
(2) 24 W
(3) 16 W
(4) 96 W
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