What happens during the regulation action of a Zener diode?

1. the current and voltage across the Zener remain fixed.
2. the current through the series Resistance (Rs) changes.
3. the Zener resistance is constant.
4. the resistance offered by the Zener changes.


Choose the correct option:

1. (a, b)
2. (b, d)
3. (b, c)
4. (c, d)

(2) Hint: The resistance offered by the Zener changes due to the change in current.
During the regulation action of a Zener diode, the current through the Rs changes and resistance offered by the Zener changes. The current through the Zener changes but the voltage across the Zener remains constant.