Physics A-Level
Numerical precision and significant figures
What Numerical precision and significant figures means in Physics A-Level, as defined for AQA.
Definition of Numerical precision and significant figures
Check what you remember
Read the wording for your board, then hide it and explain Numerical precision and significant figures in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Presenting the converted value with an appropriate unit and a sensible number of significant figures, keeping powers of ten consistent.
Topics that use Numerical precision and significant figures
- Collisions of electrons with atoms (AQA A-Level)
Related terms
- Electron volt
- Energy levels
- Energy unit conversion
- Fluorescent tube
- Ionisation
- Quantisation of charge and the elementary charge
- Unit conversion between atomic-scale and SI units
- Work done on charged particles
Using Numerical precision and significant figures 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.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Physics A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge