Q. 12 C4.3( 39 Votes )

# Solve the example

We know Energy spent = P x t

Where P = power

t = time

in case of tv set

P = 500 W

t = 30 minutes = 1/2 hour

so, energy spent = 500 x 1/2

= 250 Wh

In case of heater

P = 600 W

t = 20 minutes = 0.33 hour

so, energy spent = 600 x 0.33

= 198 Wh

Hence TV set spent more electrical energy.

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