Question

An electric kettle contain 1.5kg of water at 100 degree and powered by a 2.0kw electric element. He the thermostat of the kettle falls to operate, approximately how long will the kettle boil dry? (take the specific latent heat of vaporization of water as 2000kJkg
bobpursley
time=heatrequired/rate=1.5*Lv/20 and the time will be in seconds.

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