Non-ohmic behaviour
What Non-ohmic behaviour means in Physics A-Level, as defined for AQA, OCR.
Definitions of Non-ohmic behaviour
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Reference: AQA
Shown by components whose I–V graph is not a straight line through the origin, such as the diode and the filament lamp.
The resistance changes with light intensity, so the LDR is not ohmic with constant resistance.
Topics that use Non-ohmic behaviour
- Current–voltage characteristics (AQA A-Level)
- Resistance (OCR A-Level)
Related terms
- Graph interpretation
- Ohmic and non-ohmic behaviour
- Ohmic conductor
- Temperature dependence of resistance
- Circuit design for measurement
- Component protection
- Current–voltage characteristics
- Data logging and graphing
Using Non-ohmic behaviour in the exam
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