Intext example XIII — task. Science CBSE, Class 10.

PDF chapter test TRY NOW

An electric refrigerator rated 400 $watt$ operates 8 $hours/day$ . What is the cost of the energy to operate it for $30$ days at $Rs\ 3.00\ per\ kW h$ ?

[Note: Enter the answer as a whole number.]

The formula for electrical energy is

$i = i \times i$

The total energy consumed by the refrigerator in

$30$ days would be

$Wh$ . In terms of

$kWh$ , it is written as .

Thus, the cost of energy to operate the refrigerator for

$30$ days is

$i \times i = Rs i$

$1$

Previous exercise

Exit to the topic

Next exercise

Send feedback

Did you find an error?

Send it to us!

32. Intext example XIII

Exercise condition: