Dimensional analysis
What Dimensional analysis means in Physics A-Level, as defined for AQA, OCR.
Definitions of Dimensional analysis
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
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Reference: OCR
Checking whether an equation is consistent by replacing each quantity with its base units and seeing whether both sides match.
Replacing each symbol in an equation by its base units and comparing both sides to check the equation.
Topics that use Dimensional analysis
- Use of SI units and their prefixes (AQA A-Level)
- S.I. units (OCR A-Level)
Related terms
- Base units
- S.I. base quantities
- Unit conversion
- Avogadro constant
- Derived units
- Mass and the kilogram
- Molar calculations
- Prefixes and unit conversion
Using Dimensional analysis in the exam
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