An electrical heater is rated 4 kW, 220 V. What is the cost of using this heater for 12 hours, if one kWh of electrical energy costs Rs. 3.25 ?
Rs 156
Rs 550
Rs 880
Rs 39
An electric room heater is rated at 2kW . Calculate the cost of using it for 2 hours daily in the month of September for 30 days if each unit costs Rs 4