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A (100 W, 200 V) bulb is connected to a 160V power supply. The power consumption would be
(a) 125 W
(b) 100 W
(c) 80 W
(d) 64 W
(d)
Power = 100 W, Voltage = 200 V
Resistance of bulb
When bulb is applied across 160 V,
Current in bulb =160/400 A
Power consumption = VI = 64W
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