Physics GCSE
power rating
What power rating means in Physics GCSE, as defined for AQA, OCR.
Definitions of power rating
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Reference: AQA
The power of the appliance, which together with how long it is switched on for determines the amount of energy transferred.
The energy an appliance transfers each second, in joules per second, as printed on the appliance.
The rate at which an appliance transfers energy, measured in watts where 1 W = 1 J/s.
Topics that use power rating
- Energy transfers in everyday appliances (AQA GCSE)
- Power and efficiency (OCR GCSE)
Related terms
- Battery as chemical store versus mains a.c. supply
- charge flow
- Conservation of energy
- consistent units
- Cooling of buildings
- dissipation
- E = P t
- E = Q V
Using power rating in the exam
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