The equation gives the amount of energy consumed by electrical appliances.

H = Pt, where P is the appliance’s power and t is the time.

The energy consumed by a TV with a power rating of 250 W may be estimated using this formula:

3600 seconds H = 250 W = 900000 J

A toaster with a power rating of 1200 W consumes similar amounts of energy.

600 s = 7.2 105 J H = 1200 W

The energy required by the TV is higher than that of the toaster, according to the estimates.