# Diodes and their applications

### Explanation of question 6

A zener diode is normally

1. forward-biased and used as a voltage stabiliser
2. forward-biased and used as a variable capacitor
3. reverse-biased and used as a voltage stabiliser
4. reverse-biased and used as a variable capacitor

The answer is :- 3 The zener diode is often used as a voltage stabiliser. Its connection in a circuit is such that it is reverse-biased

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