Physics GCSE
consistent units
What consistent units means in Physics GCSE, as defined for AQA.
Definitions of consistent units
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain consistent units in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Both pressures must share one unit and both volumes must share another, because the conversion factors cancel.
Keeping power in watts, time in seconds and charge in coulombs so the two methods always agree.
Topics that use consistent units
- Energy transfers in everyday appliances (AQA GCSE)
- Pressure in gases (physics only) (AQA GCSE)
Related terms
- charge flow
- collision frequency
- compression and expansion
- constant temperature
- dissipation
- E = P t
- E = Q V
- energy pathways
Using consistent units 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 GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge