An industrial induction furnace has a power rating of 45 kW. It is operated continuously for 3 hours and 20 minutes3\text{ hours and } 20\text{ minutes}3 hours and 20 minutes during a manufacturing run. The electricity tariff is 42 p42\text{ p}42 p per kWh\text{kWh}kWh.
What is the total cost of the electricity used during this run?
£6.30£6.30£6.30
£60.48£60.48£60.48
£63.00£63.00£63.00
£378.00£378.00£378.00
13 exam-style questions on OCR A A Level Physics Work, energy and power, covering Work and conservation of energy, Kinetic and potential energies, and Power. Each one has a worked solution and a mark scheme showing where the marks go.