An electric kettle operates continuously at its rated power of 2.2 kW for 30 minutes. At ₹4 per kWh, what is the electricity cost?

Explanation

Assuming continuous operation at the rated power, 30 minutes is 0.5 hour. Energy = 2.2 kW × 0.5 h = 1.1 kWh. At ₹4 per kWh, the cost is ₹4.40. This is an energy-cost calculation, not a prediction of a kettle’s thermostat cycling.