an electric kettle is rated 2.5 Kw, 250 W. find out cost of running the kettle for 2 hours at Rs. 1-60 per unit
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Explanation:
Given, Power of kettle, p = 2.5 kw Voltage, V = 250 v Time, t = 2 h As, Energy, E = P × t = 2.5 × 2 = 5 kwh Cost per unit of energy = Rs. 5.40 Cost for 5 kwh of energy = 5.40 × 5 = Rs. 27
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