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GCSE Physics · key term
A component designed to provide an approximately constant resistance when its temperature and other physical conditions are constant.
Used by Edexcel and OCR
Specification 10.18 · Paper 2
A circuit component whose resistance is designed to remain constant under fixed physical conditions.
Revise: V-I CharacteristicsFor a fixed resistor under constant physical conditions, resistance remains constant.
Specification P3.2b · Paper 1 (Foundation), Paper 3 (Higher)
A component with a resistance that is not intended to be adjusted.
Revise: Circuit diagramsA fixed resistor has a resistance that is not intended to be adjusted. A variable resistor uses the resistor symbol with an additional diagonal arrow, showing that its resistance can be changed. Changing its resistance can be used to control the current in a circuit.
Paper 1, Paper 2
Revise: Resistance and Potential DifferenceFor a fixed resistor kept at constant temperature, resistance remains approximately constant.
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