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GCSE Combined Science · key term
A conductor whose current is directly proportional to the potential difference across it, provided its temperature remains constant.
Used by AQA
Specification 6.2.1.4 · Paper 5, Paper 6
Revise: Resistance and I–V CharacteristicsFor an ohmic conductor at constant temperature, current is directly proportional to potential difference. Doubling the potential difference doubles the current; tripling it triples the current.
Always include ‘at constant temperature’ when explaining why an ohmic conductor has constant resistance.
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