Combined Science (A) J250,12 Higher June 2022, OCR GCSE Past Papers with Mark Schemes

1. Electricity and Power Systems – Energy transfer in remote controls, transformer current calculations, resistance in filament lamps, and advantages of combined heat and power (CHP) stations.

2. Motion and Forces – Typical car acceleration values, stopping distances at different speeds, kinetic energy calculations, and efficiency in bouncing objects.

3. Waves and Electromagnetic Radiation – Identifying longitudinal waves, calculating wavelength using wave speed, and explaining energy level transitions in atoms.

4. Nuclear Physics and Radiation – Half-life of radioactive isotopes, nuclear equations for beta decay, and reasons for long-term contamination effects of nuclear disasters.

5. Thermal Energy and Specific Heat Capacity – Improving experimental accuracy in heat transfer studies, describing energy transfer in heating water, and measuring efficiency in energy experiments.

6. Smart Meters and Energy Usage – Calculating energy savings by unplugging appliances, advantages of smart meters in homes, and their role in reducing energy consumption.