Question

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

Answer:

TV

Explanation:

Given :

• Power consumed by the Television (TV) = 500 watts

• Time of consumption of power by TV = 30 minutes

• Power consumed by the heater = 600 watts

• Time of consumption of power by heater = 20 minutes

To find :

• TV consumes more energy or the heater

Energy consumed by TV:

Energy consumed = power×time

Energy consumed = 500×½ = 250 WH

Energy consumed by heater:

Energy consumed = power×time

Energy consumed = 600×⅓ = 200 WH

The energy consumed by the TV is more by 50 Watt hours

Answer 2

Answer:

Given:

• A TV set takes 500W in 30 minutes.A water heater takes 600W in 20 minutes.

Find:

• Which of the two electric gadgets spend more energy.

Using formula:

★ ${\sf{\underline{\boxed{\orange{\sf{Energy = \dfrac{Power}{Time} }}}}}}$

Calculations:

• Energy consumption of TV.

⇒ $\bold{500 \times 1/2}$

⇒ ${\sf{\underline{\boxed{\red{\sf{250 \: WH}}}}}}$

• Energy consumption of Heater.

⇒ $\bold{600 \times 1/3}$

⇒ ${\sf{\underline{\boxed{\red{\sf{200 \: WH }}}}}}$

Therefore, TV consumes more energy than the water heater.