Calculate the energy consumed by 2 kW heater used for 1 hr every day in a period of 30 days.
There are 5 rooms in a house.Each room has 100W bulb and a 40W tubelight.If every day the bulb is use for 1hour and tubelight is use for 5hours in each room,then what will the cost of total electric energy consumed in 30days when one unit costs Rs.2.5
In Mrs. Pinto’s flat there are 6 bulbs of 100 W each, a heater of 2kW and 5 fans of 50 W each. If these are used every day 8 hr , half an hr and 6 hour respectively, calculate the cost of energy consumption for a month of 30 days at the rate of 3.50 per kW h.