What is the cost of operating an electric iron wirh power consumption of1.2kw for 30minutes of enertis sold at N7.00per kw

The total energy consumption in kWh is:

1.2 kW x 0.5 hours = 0.6 kWh

The cost of energy consumed is:

0.6 kWh x N7.00/kWh = N4.20

Therefore, the cost of operating an electric iron with power consumption of 1.2 kW for 30 minutes of energy sold at N7.00 per kW is N4.20.

To calculate the cost of operating an electric iron, you will need to determine the total power consumption and multiply it by the cost per kilowatt-hour.

Step 1: Convert the power consumption from kilowatts (kW) to kilowatt-hours (kWh).
Power Consumption = 1.2 kW
Time = 30 minutes = 0.5 hours

Total Energy Consumption (in kWh) = Power Consumption (in kW) x Time (in hours)
Total Energy Consumption = 1.2 kW x 0.5 hours
Total Energy Consumption = 0.6 kWh

Step 2: Calculate the cost.
Energy Cost = Total Energy Consumption x Cost per kWh
Energy Cost = 0.6 kWh x N7.00 per kWh
Energy Cost = N4.20

Therefore, the cost of operating the electric iron for 30 minutes is N4.20.