Question

Which uses more energy: a 250 W TV set in 1 hour or a 1200 W toaster in 10 minutes?

Answer 1

Energy consumed by the TV set,

E = p × t

= 250 × 1

= 250 Wh

Energy consumed by the toaster,

E = p × t

`= 1200  Wxx10/60h (10 min = 10/60h)`

= 200 Wh

Thus, it is clear that the TV set consumes more electrical energy.