Which uses more energy, a television of 250 W in 60 minutes or a toaster of 1.2 kW in (1/6)th of an hour?
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Answer:
tv with 250 W in 60 min
Explanation:
P = 250 W = 0.25 kWh
t = 1 h
Energy consumed = P X t = 0.25 X 1 = 0.25 kWh
Case 2: Toaster
P = 1200 W = 1.2 kW, t = 10 min = 10/60 = 1/6h
Energy consumed = P X t = 1.2 X (1/6) = 0.2 kWh
Thus, TV uses more energy.
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