What must be the efficiency of an electric kettle marked 500W

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What must be the efficiency of an electric kettle marked 500W, 230V, if the was found to bring 1 kg of water at 15^oC to boiling point in 15 minutes? (given specific heat capacity of water =4200 J/kg^oC)
03
Dec
What must be the efficiency of an electric kettle marked 500W, 230V, if the was found to bring 1 kg of water at 15^oC to boiling point in 15 minutes? (given specific heat capacity of water =4200 J/kg^oC) 230V if the was found to bring 1 kg of water at 15^oC to boiling point in [...]
Posted in: Arihant Physics by D.C Pandey , Chapter 3 - Current Electricity , Volume 2 ,
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