`1 g` of coal on complete combustion liberates `18 k J` of heat. Calculate the amount of
Channel: Doubtnut
Date: 2020-07-26

`1 g` of coal on complete combustion liberates `18 k J` of heat. Calculate the amount of coal required to liberate the same amount of heat that an electric heater of `2 kW` provides in `1 h`.  or  Electricity generated by a windmill is another form of solar energy. Explain ?