Question

A 1000w oven is used 60 minutes everyday. Calculate the mumber of units of electrical energy oven consumes in 30 days.

Answer 1

we know,

Power = $\frac{energy}{time}$

1000 = $\frac{energy}{60\ast 60}$;

Energy = 1000×3600;

Energy consumed per day is 3.6 *10⁶ joule.

We know, 1 unit of energy = 3.6 *10⁶ joule.

Amount of unit consumed per day = $\frac{3.6\ast {10}^{6}joules}{3.6\ast {10}^{6}joules}$

Amount of unit consumed in 30 days = 30unit.