Question

which uses more energy a 2500 volt TV in 1 hour or 1200 volt toaster in 10 minutes​

Answer 1

Answer:

Energy consumed by the TVset = 250*3600 =9*105J ∴ Energy consumed by a toaster = 1200 × 600 = 7.2× 105J ∴ the energy consumed by a 250 W TV set in 1 h is more than the energyconsumed by a toaster of power 1200 W in 10 minutes.

Answer 2

Answer:

E=Pt

E=PtFor TV,

E=PtFor TV,E 1=250×1=250 W hr

E=PtFor TV,E 1=250×1=250 W hrFor toaster,

E=PtFor TV,E 1=250×1=250 W hrFor toaster,E 2=1200× 60/10 =200 W hr

E=PtFor TV,E 1=250×1=250 W hrFor toaster,E 2=1200× 60/10 =200 W hrHence, TV uses more energy.