[" 11.An electric refrigerator rated "400" W operates "8" hour/day.What is the cost of the energy to operate it for "30],[" Ans.Rs."288-00" ) "]

An electric refrigerator rated 400 W operates 8 hour/day. What is the cost of the energy to operate it for 30 days at Rs 3.00 per kW h?

An electric refrigerator rated 400 W operates 8 hours/day. What is the cost of the energy to operate if for 30 days at Rs 3.00 per kWh ?

An electric refrigerator rated 400 W operates 8 hour//day . What is the cost of the energy to operate it for 30 days at Rs. 3.00 per kWh ?

An electric refrigerator rated 400 V operates 8 hour//day. What is the cost of the energy to operate it for 30 days at Rs. 3.00 per kWh ?

An electric refrigerator rated 500 W operates 24 hours/day. What is the cost of the energy to operate it for 20 days at Rs.2.00 per kWh?

An electric geaser rated 600 W operates 9 hour/day. What is the cost of the energy to operate it for 30 days Rs 4.00 per KWh?

(a) Define 1 watt. (b) State the commercial unit of electric energy. Express it in terms of SI unit of energy. (c) An electric refrigerator rated as 750 W operates 8 hours per day. What is the cost of the energy to operate it for the month of June at Rs. 2.50 per kWh ?

(a) Define 1 watt. (b) State the commercial unit of electric energy. Express it in terms of SI unit of energy. (c) An electric refrigerator rated as 750 W operates 8 hours per day. What is the cost of the energy to operate it for the month of June at Rs. 2.50 per kWh ?

An electric heater rated 800 W operates 6h/day. Find the cost of energy to operate it for 30 days at ₹ 3.00 per unit.

An electric refrigerator rated 400 W and an electric bulb rated 100 W are operated 10 hours / day. What is the cost of the energy to operate them for 10 days at Rs. 8.00 per kWh ?