An electric kettle needs six minutes to boil 2 kg of water


An electric kettle needs six minutes to boil 2 kg of water from the initial temperature of 20"C. The cost of electrical energy required for operation is 12 paise, the rate being 40 paise per kWh. Find the kW-ruling and the overall efficiency of rate the kettle.

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Electrical Engineering: An electric kettle needs six minutes to boil 2 kg of water
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