Question

a fridge has a power rating of 2kw .it is used for 10 hours each day in the month of december and january' .if the cost of energy is rs 3 per kwh find the total cost of energy consumed in these 2 months

Answer 1

$\mathfrak{\large{\underline{\underline{Answer:-}}}}$

₹ 3720 .

$\mathfrak{\large{\underline{\underline{Given:-}}}}$

The power rating of fridge is = 2kw.

Cost of energy = ₹3 / kwh.

$\mathfrak{\large{\underline{\underline{Solution:-}}}}$

Energy disipiated by fridge is given by formula :-

$\boxed{\sf{ <strong>E</strong><strong> </strong>= P × T × N}}$

Where E is energy consumed.

P is power

T is time

N is no. of days.

Number of days in December and January = 2 × 31 = 62 days.

Energy consumed by fridge = $\bold{E = 2 × 10 × 62 }$

Energy consumed by fridge = 1240 kwh

Cost of energy is ₹ 3 / kwh.

Cost of energy in these two months = 3 × 1240

= ₹ 3720 Ans...