Physics GCSE
Efficiency as a ratio and percentage
What Efficiency as a ratio and percentage means in Physics GCSE, as defined for OCR.
Definition of Efficiency as a ratio and percentage
Check what you remember
Read the wording for your board, then hide it and explain Efficiency as a ratio and percentage in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Useful energy output divided by total energy input, giving a value between 0 and 1, and multiplying by 100 gives a percentage.
Topics that use Efficiency as a ratio and percentage
- Power and efficiency (OCR GCSE)
Related terms
- Battery as chemical store versus mains a.c. supply
- Conservation of energy
- Cooling of buildings
- Efficiency
- Energy transferred
- Lubrication
- power rating
- Rate of energy transfer
Using Efficiency as a ratio and percentage in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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