Which uses more energy, a `250 W` TV set in `1 h` or a `1200 W` toaster in `10` minutes ?

Explanation

For T.V set Power (P) = 250 W, Time (f) = 1 hr=60`xx`60=3600 s For Toaster Power (P) = 1200 W, Time (t) = 10 min=10`xx`60=600 s We know that `therefore` Energy (E) = p `xx` t
`therefore` Energy consumed by a TV set = 250 `xx` 3600 = 9`xx` 105 J
`therefore` Energy consumed by a toaster = 1200 `xx` 600 = `7.2 xx 10^(5)` J
`therefore` the energy consumed by a 250 W TV set in 1 h is more than the energy consumed by a toaster of power 1200 W in 10 minutes.