An electric refrigerator rated 400 W operates 8 hour/day. What is the cost of the energy to operate it for 30 days at Rs 3.00 per kWh?
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Explanation:
Given: (P) = 750 W
= 750
1000
kW = 75
100
(t) = 2 × 30 = 60 hours
Unit cost = ` 3
To find: Total Cost = ?
Formula: H = P × t
Solution: H = P × t
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