Question

Q) Ria's study rooms has a bulb of 75W which is used for 5 hours daily in the month of September. Calculate the electric energy consumed in the month. if the cost of electric energy is ₹2.75 per unit. calculate the expenditure for the month.
(with step-by-step explanation) ​

Answer 1

Answer:

3.1 ₹

Explanation:

Consumption of energy by bulb in 1 hour = 75W

5 Hour= 75×5

= 375W

.°. daily consumption of bulb is 375W

Now, the monthly consumption of the bulb on month of September = 375×30

=1125 W

(as we know 1KW=1000W)

1125 W in killowatt (KW) = 1.125 KW

= 1.125 U

A.T.Q

1 Unit = 2.75₹

1.125 Unit. = 2.75×1.125

= 3.09375₹

= 3.1 ₹ (Approx)

(Have a Good Day)