constant resistance
What constant resistance means in Physics GCSE, as defined for AQA, OCR.
Definitions of constant resistance
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Reference: OCR
A fixed resistor keeps this because the ratio of potential difference to current stays the same as current changes.
The resistance remains constant as the current changes, so V ÷ I is the same at every point.
Topics that use constant resistance
- Resistors (AQA GCSE)
- Simple circuits (OCR GCSE)
Related terms
- diode
- filament lamp
- non-ohmic components
- Standard circuit symbols
- Cell polarity conventions
- comparing at fixed pd
- constant temperature
- Current
Using constant resistance in the exam
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