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Water equivalent of an electric kettle i...

Water equivalent of an electric kettle is 100 g. 890 g of water is taken in it, and it is then switched on. If water needs 3 min 45 s to reach its boiling point from and initial temperature of `20^(@)C`, find the rate of production of heat by the kettle? (Assume that `20%` of the energy produced is wasted.)

Text Solution

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`"440 cal.s"^(-1)`
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