Physics A-Level
Fractional uncertainty
What Fractional uncertainty means in Physics A-Level, as defined for AQA.
Definition of Fractional uncertainty
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Reference: AQA
Equals the absolute uncertainty divided by the measured value, so 0.001 ÷ 0.842 ≈ 0.00119.
Topics that use Fractional uncertainty
- 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
- Percentage form
- Precision
Using Fractional uncertainty in the exam
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