An electric iron rated 750 W is operated for 2 hours/day. How much energy is consumed by the electric iron for 30 days ?

Solve the following examples/ numerical problems. A electric iron rated 750 w is operated for 2 hours/ day. How much energy is consumed by the electric iron for 30 days ?

An electric refrigerator rated 400 W is used for 8 hours a day. An electric iron box rated 750 W is used for 2 hours a day. Calculate the cost of using these appliances for 30 days, if the cost of I kWh is Rs 3/-.

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 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 300 W is used for 8 hours a day. An electric iron box rated 750 Wis used for 2 hours a day. Calculate the cost of using these appliances for 30 days, if the cost of 1 kWh is Rs. 3/-