Efficiency - GCSE Physics

Efficiency is the ratio of the increase in the useful energy store (output) to the energy in the original store (input). This can either be expressed as a number between 0 an 1, or as a percentage.

The efficiency equation is as follows:
Efficiency = increase in the useful energy store/energy in the original store
or
Efficiency = output/input

Thanks for watching,

Lewis

This video is relevant for GCSE Physics 9-1 in the following exam boards:
AQA (including Trilogy)
Edexcel
CCEA
OCR A
OCR B
WJEC
CIE (Cambridge International Examinations) IGCSE
Edexcel International IGCSE
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[freddiedaniels]

Ah yes a bean bag, my favourite type of ball XD

[bethbeare]

Would you be able to give some tips/advice on how to prepare for paper 3? (Edexcel)

[sumtingwong]

Will you be going through the ocr AS physics 2019 paper?

[kingpingaming-xnfp]

Hi sir how much does A level physics cost on your website for AQA ?

[jeff-ybfk]

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