A diode that is forward biased has a p.d. of about 0.6V (the threshold voltage) across it whenever a current flows through it.A diode that is reverse-biased has a very high resistance across it (effectively infinite) and will not allow current to flow.A diode in a circuit in series with a cell will reduce the p.d. of the circuit by 0.6V in forward bias.
Diodes in Circuits
Read the text
Read the text and highlight anything you think is important. When you go on, the text is hidden and you answer from memory.
Specification: AQA Physics (7407), AS-level, 3.5.1.4 Circuits. Topic: Direct Current Circuits.
More in Direct Current Circuits
- Power
- Measuring Internal Resistance
- Cells in Series
- Cells In Parallel
- The Potential Divider - Fixed p.d.
- The Potential Divider - Variable p.d.
- Sensor Circuits - Temperature
- Sensor Circuits - Light
All 15 lessons in Direct Current Circuits · All AQA AS-level Physics topics