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A heater is rated at 5kW. Calculate the cost of energy consumed by it in 30 days if it runs for 2 hours daily. The cost of 1kW is priced at rupees 4.20

the rating must be 5kWh. please verify
ignore that comment. sorry :p


Power = 5kW.
Time = 30×2 = 60h.
Energy = 300 kWh. (power × time).
cost of 1kWh = 4.20
cost of 300kWh =  1,260 bucks.

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