Which uses more energy a 250w tv set

Asked by admin @ 24/08/2021 in Chemistry viewed by 291 People

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

NCERT Class X
Science - Science
Chapter _Electricity

Answered by admin @ 24/08/2021

For T.V set Power (P) = 250w, Time (t) = 1hr=60×60=3600s
for toster
power=1200W
time =10min = 10*60 =600s
E=P*T
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.

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