OCR GCSE Gateway Science Suite - Physics A J249 · P7.2d

Calculating efficiency

Code: P7.2d
In: P7.2 Power and efficiency
Topic: P7 Energy
Course: GCSE Gateway Science Suite - Physics A J249
Board: OCR

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 P7.2 Power and efficiency

PM7.2i Efficiency equation
P7.2a Energy dissipation
P7.2b Energy transfer in domestic devices
P7.2c Power ratings of appliances
P7.2d Calculating efficiency
P7.2e Increasing efficiency
P7.2f Reducing unwanted energy transfer
P7.2g Building walls and rate of cooling