Question

An electric refrigeror rated 400 Watt opearates 8 hour/ day. What it the cost of energy to operate it for 30 days at Rs. 3.00 per kWh?

Answer 1

$\textbf{Hey There!}$

=>Here is ur Solution<=

The total energy consumef by the refrgerator in 30 days would be 400 W × 8.0 hour/day × 30 days = 96000 W h =$\textbf{96 kWh}$

Thus the cost to operate the tefrigerator for 30 days is 96 kWh × Rs. 3.00 per kWh = $\textbf{Rs. 288.00}$

|HopE__It__HelpS| :-|

Answer 2

heya....

Here is your answer....

Given,

Power of the electric refrigerator P = 400 W

= 400/1000 kw

= 0.4 kw

Time t = 30×8 hours

= 240 hour's

Energy consumed = P×t

= 0.4kw × 240 h

= 96kwh

Cost = 96×3.00

= 288.00

It may help you...☺☺