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An electric heater draws a current of 10A from a 220V supply. What is the cost of using the heater 5 hrs per day for 30 days if the cost of 1 unit is RS. 2.50? |
| Answer» An electric heater draws a current of 10A from a 220V supply. What is the cost of using the heater 5 hrs per day for 30 days if the cost of 1 unit is RS. 2.50? | |