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Which uses more energy, a \(250\ W\) TV set in \(1\ hr\), or a \(1200\ W\) toaster in \(10\ minutes\)?
The formula for energy consumption is
Energy consumed by a TV for an hour:
\(P\) \(=\) \(250\ W\)
Time, \(t\) \(=\) \(1\ hour\)
On converting hour to seconds, we get \(t\) \(=\) \(s\)
[Note: Enter the answer as a whole number.]
The energy consumed by a TV for an hour is .
Energy consumed by toaster in \(10\ minutes\):
\(P\) \(=\) \(1200\ W\)
Time, \(t\) \(=\) \(10\ minutes\)
On converting minutes to seconds, we get \(t\) \(=\) \(s\)
[Note: Enter the answer up to one decimal place.]
The energy consumed by a toaster for \(10\ minutes\) is .
Thus, theenergy consumed by the TV is the toaster.
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