Physics A-Level
Percentage form
What Percentage form means in Physics A-Level, as defined for AQA.
Definition of Percentage form
Check what you remember
Read the wording for your board, then hide it and explain Percentage form in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Useful for comparing precision across different quantities, because a small absolute uncertainty on a large value gives a tiny percentage uncertainty.
Topics that use Percentage form
- Limitation of physical measurements (AQA A-Level)
Related terms
- Absolute uncertainty
- Averaging
- Combination of absolute and percentage uncertainties
- Gradient and intercept
- Line of best fit
- Multiplication and division rule
- Precision
- Random errors
Using Percentage form in the exam
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