How much energy is used for boiling water in a 2 Kw kettle for 10 minutes? calculate it in watt hour . please solve step wise and fasttt
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The formula for heat produced is in joules is H= (Current )square multiplied by Resistance multiplied by time.
You want to reduce the heat you have to reduce the resistance . In case of heating coil the resistance is proportional to its length so you will have to reduce the length by about one third to boil the water in 15 minutes instead of 10.
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