Physics A-Level
Equilibrium state
What Equilibrium state means in Physics A-Level, as defined for AQA.
Definition of Equilibrium state
Check what you remember
Read the wording for your board, then hide it and explain Equilibrium state in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Each point on a p–V diagram fixes a unique equilibrium state of a fixed mass of gas.
Topics that use Equilibrium state
- The p–V diagram (A-level only) (AQA A-Level)
Related terms
- Adiabatic change
- Graphical integration and estimation techniques
- p–V diagram
- Sign conventions for expansion and compression
- Work as the area under a p–V graph
- Consistency of units in thermodynamic calculations
- Isothermal change
Using Equilibrium state 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