Physics GCSE
Unit pairing
What Unit pairing means in Physics GCSE, as defined for OCR.
Definition of Unit pairing
Check what you remember
Read the wording for your board, then hide it and explain Unit pairing in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Each quantity must be kept in its matching pair: watts with seconds give joules, and kilowatts with hours give kilowatt-hours.
Topics that use Unit pairing
- Simple circuits (OCR GCSE)
Related terms
- Cell polarity conventions
- constant resistance
- Current
- diode
- E = P t
- Energy transferred
- Equivalent resistance in series
- Explaining mechanisms
Using Unit pairing 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.
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