variable resistor
What variable resistor means in Physics GCSE, as defined for AQA.
Definitions of variable resistor
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Reference: AQA
A variable resistor in series lets you change the current, and so the potential difference across the component under test.
A component that can be adjusted to change the resistance and so the potential difference.
Topics that use variable resistor
- Current, resistance and potential difference (AQA GCSE)
- Standard circuit diagram symbols (AQA GCSE)
Related terms
- across versus through
- ammeter placement
- controlling current
- current and power
- errors carried forward
- Inverse relationship
- potential difference
- Resistance
Using variable resistor in the exam
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