A 220V electric kettle takes 990W. Calcu...

A 220V electric kettle takes 990W. Calculate (i) the resistance of the heating element, (ii) the time required to melt and boil away 1kg of ice assuming a heat loss of 40% by conduction and radition.

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The correct Answer is:

1.414hour,`49Omega`

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NN GHOSH-HEATING AND CHEMICAL EFFECT OF CURRENT-EXAMPLE B

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