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Question
Express watt-hour in joules.
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Solution
\(1\text{ Wh} = 1\text{ Watt} \times 1\text{ hour}\)
\(= 1\text{ J/s} \times (60 \times 60)\text{ s}\)
\(= 1 \times 3600\text{ J}\)
\(= 3,600\text{ J}\)
\(= {3.6 \times 10^3\text{ J}}\)
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