question_answer 33)

  What happens during regulation action of a  Zener diode? (a) The current in and voltage across the Zener remains fixed (b)The current through the series Resistance (Rs) changes (c) The Zener resistance is constant (d)The resistance offered by the Zener changes

Answer:

  (b,d) During regulation action of a zener diode, the current through the series resistance changes and resistance offered by the zener changes. The current through the zener changes but the voltage across the zener remains constant. Thus, options (b) and (d) are correct.