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Ohm's law relationship — OCR GCSE Physics A J249

Home
Physics
OCR GCSE Physics A
Electricity
Simple circuits
Ohm's law relationship

OCR GCSE Physics A · J249

Ohm's law relationship

What you need to know

Recall and apply the relationship between current, resistance, and potential difference.
Understand that for some resistors $R$ is constant, while for others it changes with current.

$V = I R$

Revision notes

1
Ohm's law relationship
3 key terms

Practise with past papers Key terms & definitions

Previous subtopicCurrent, resistance, potential difference Next subtopicResistance variation