NCERT Exemplar XXV — task. Science CBSE, Class 10.

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What is the commercial unit of electrical energy? Represent it in terms of joules.

The commercial unit of electrical energy is .

\begin{array}{l} 1 kilowatt hour = i kilowatt \times i hour \\ = i kW \times (i \times i) s \\ = i W \times i s \\ = i \times 10^{i} J \end{array}

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84. NCERT Exemplar XXV