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An electric kettle taking 3.5A at 210V b...

An electric kettle taking 3.5A at 210V brings 1200cc of water from `25^(@) "to" 95^(@)C` in 12minutes. Find the percentage of the supplied energy which goes towards heating water.

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The correct Answer is:
`66.67%`
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NN GHOSH-HEATING AND CHEMICAL EFFECT OF CURRENT-EXAMPLE B
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