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An electric refrigerator rated 400 W ope...

An electric refrigerator rated 400 W operates 8 hours/day. What is the cost of the energy to operate if for 30 days at Rs 3.00 per kWh ?

Text Solution

Verified by Experts

The total energy consumed by the refrigerator in 30 days would be
400 W `xx` 8.0 hour/ day `xx` 30 days
= 96000Wh
= 96 kWh ( `:. 1kWh = 10^3 Wh`)
Thus, the cost of the energy to operate the refrigerator for 30 days is `96 kWh xx Rs 3.00` per kWh = Rs 288.00.
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