Two heater coils separately takes 6 minutes and 9 minutes to heat certain amount of water by 20°C. If both the coils are connected in series, the time taken to heat same amount of water by 20°C will be
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Two heater coils separately takes 6 minutes and 9 minutes to heat certain amount of water by 20°C. If both the coils are connected in series, the time taken to heat same amount of water by 20°C will be 15 mins
Explanation:
When connected in series t = t1 + t2
t = 6 + 9
t = 15 minutes
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