An electric heater is rated at 2 kW. Electrical energy costs Rs 4 per kWh. What is the cost of using the heater for 3 hours?

An electric heater is rated 1500 watt. If electric power costs Rs. 2 per kilp-watt-hour, then the cost of power of 10 hours running of the heater is

An electric heater draws a current of 10A from a 220V supply. What is the cost of using the heater for 5 hours everyday for 30 days if the cost of 1 unit (1 kWh) is Rs 5.20?

An electric heater is rated 1500 W. How much energy does it use in 10 hour?

An electric heater works for 30 min at 120V and takes energy of 1.2 kWh. What is the current drawn by the heater ?

An electric heater is rated 1500 W. How much energy does it use in 10 hours?