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GCSE Physics · key term
The connection of a diode in the direction in which it has a very high resistance and allows almost no current to flow.
Used by AQA and OCR
Specification 4.2.1.4 · Paper 1
Revise: Practical: Investigating I-V CharacteristicsIn reverse bias it has a very high resistance, so the current is extremely small. In forward bias there is initially little current, followed by a rapid increase once the potential difference is large enough for appreciable conduction. Its I–V characteristic is therefore strongly non-linear and is not symmetrical about the origin.
Paper 1, Paper 2
The direction of potential difference across a diode in which its resistance is very high and practically no current flows.
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In reverse bias, its resistance is very high and the current is approximately zero over the range normally used in a school experiment.