Question

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

Answer 1

Toaster use more energy in 10 minutes

Answer 2

Answer:

Step-by-step explanation:

For T.V set 

Power (P) = 250w,

Time (t) = 1hr=60x60=3600s

For Toaster 

Power (P) = 1200w,

Time (t) = 10min=10x60=600s

We know that Energy (E) = Pxt

Energy consumed by a TV set = 250 x3600 = 800000 J  

Energy consumed by a toaster = 1200 x600 = 720000 J  

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.

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