Discussion
One watt-hour is equivalent to
Answer: C
One watt-hour equals \(3.6\times10^{3}\) J.
\[1\ \mathrm{Wh} = 1\ \mathrm{W}\times 3600\ \mathrm{s} = 3600\ \mathrm{J}\] A kilowatt-hour, the unit on an electricity bill, is a thousand times this, \(3.6\times10^{6}\ \mathrm{J}\).
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