Class 10 > Science

Question

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

Solution

Given: A 250W TV in one hour, 1200W toaster in 10 minutes. To find: which uses more energy. Solution: Power of TV P₁=250 W Time taken by TV= t, =1 hour = 60×60 seconds =3600 seconds Power of toaster = P₂ = 1200 W Time taken by toaster=t₂= 10 minutes = 10×60 seconds = 600 seconds

Was this answer helpful? 0 0