OCR GCSE Twenty First Century Science Suite - Combined Science B J260 · P2.1.8
Efficiency equation
- Code
- P2.1.8
- In
- P2.1 How much energy do we use?
- Topic
- P2 Sustainable energy
- Course
- GCSE Twenty First Century Science Suite - Combined Science B J260
- Board
- OCR
Grade boundaries·OCR command words
Codes and titles are read by a script from OCR's published specification and have not been checked by a person. What each point covers is in the specification itself: OCR’s specification.
Points in P2.1 How much energy do we use?
- P2.1.1 Energy transfer by electric current
- P2.1.2 Power ratings of appliances
- P2.1.3 Energy, power and time equation
- P2.1.4 Conservation of energy in closed systems
- P2.1.5 Energy dissipation
- P2.1.6 Reducing unwanted energy transfer
- P2.1.7 Building walls and rate of cooling
- P2.1.8 Efficiency equation
- P2.1.9 Sankey diagrams