Question

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?

Answer 1

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.