Question

an electric oven is rated 2500W. How much unit energy does it used in 4 hours

Answer 1

Power rating of the electric oven = 2500 Watts

Time for which the electric oven is On = 4 hours = 4 × 60 × 60

Time for which the electric oven is On (t) = 14400 seconds

Power is defined as the rate at which the energy is consumed.

Hence, the formula for power is:

$Power = \frac{Energy}{t}$

Energy consumed = Power × t

Energy consumed = 2500 × 14400

Energy consumed = 36000000 Joules

Hence, the energy consumed by the electric oven in 4 hours is 36000000 Joules.

Answer 2

Answer:

Power=2500W

Time=4hrs

        =4*60*60

       =14400sec

Energy=??

Explanation:

We know that;

 power=energy/time

so;

 energy=power*time

  energy=2500*14400

             =36000000J

hence;the final answer is 36000000J

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