A kettle has a power of 2000 W. It is switched on for 2 minutes.
Use the equation: energy transferred=power×time\text{energy transferred} = \text{power} \times \text{time}energy transferred=power×time
How much energy is transferred by the kettle?
1000 J1000\ \text{J}1000 J
4000 J4000\ \text{J}4000 J
120 000 J120\,000\ \text{J}120000 J
240 000 J240\,000\ \text{J}240000 J
44 exam-style questions on OCR GCSE Physics 7.1 Work done, covering 7.1.1 Conservation of energy in a closed system, 7.1.2 Energy stores and transfers, 7.1.3 Energy changes by heating, forces and current, 7.1.4 Quantifying energy transfers in a system, and 7.1.5 Kinetic, elastic and gravitational potential energy. Each one has a worked solution and a mark scheme showing where the marks go.