Question

who will spend more electrical energy?500 W TV set in 30 mins ,or 600 W heater in 20 mins ?
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Answer 1

Answer:

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Explanation:

TV will spend more electrical energy. We know that, Consumed energy is the product of the power and time. Hence, TV will spend more electrical energy.

Answer 2

Answer: TV will spend more electrical energy.

Explanation:

Given that,

Power of TV = 500 W

Time t = 30 min

Power of heater = 600 W

Time t = 20 min

We know that,

Consumed energy is the product of the power and time.

E = P\times tE=P×t

Energy consumed by the TV

E = 500 W\times 0.5\ hE=500W×0.5 h

E = 250\ WhE=250 Wh

Energy consumed by the heater

E = 600 W\times 0.33\ hE=600W×0.33 h

E = 198\ WhE=198 Wh

Hence, TV will spend more electrical energy.