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A 30V storage battery is being charged b...

A 30V storage battery is being charged by 120V d.c. supply. A resistor has been connected in series with the battery to limit the charging current to 10A. Find the rate at which energy is dissipated in the resistor. If the total heat produced could be made available for heating water, how long would it take to bring 1 kg of water from `10^(@)C` to the boiling point? Specific heat of water`=1 "cal" g^(-1).^(@)C^(-1)` and from `15^(@)C` to the boiling point ? Specific heat of water =1 cal `g^(-1).^(@)C^(-1)` and 1 cal=4.2J

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