1.

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

Answer»

Solution :`E=Pxxt`
`{:("For T.V.","For toaster"),(E_(1)=250xx1xx3600,E_(2)=1200xx10xx60),(E_(1)=900000J,E_(2)=720000J),(E_(1)=9XX10^(5)J,E_(2)=7.2xx10^(5)J):}`
`toE_(1)gtE_(2)`
THEREFORE T.V set USES more ENERGY.


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