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Three heater coils h1, h2, h3, rated ( 1000W,100V) (1500W, 100V ) ( 2000W, 100V,) individually take a time interval of 12 min, 6 min, 4 min, respectively to generate the same quantity of heatQ when connected to a 200 V source. Noe these three coils are connected in parallel and this parallel combination is connected to a 50 V source. The time taken by this parallel combination of colis to generate the same quantity of heat Q is

Answer» Three heater coils h1, h2, h3, rated ( 1000W,100V) (1500W, 100V ) ( 2000W, 100V,) individually take a time interval of 12 min, 6 min, 4 min, respectively to generate the same quantity of heatQ when connected to a 200 V source. Noe these three coils are connected in parallel and this parallel combination is connected to a 50 V source. The time taken by this parallel combination of colis to generate the same quantity of heat Q is


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