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A diode when reversed biased acts as-

A diode when reversed biased acts as- Correct Answer Open switch

  • An ideal diode is short-circuited when forward biased, and open-circuited when reversed biased.
  • A short circuit diode acts as a closed switch.
  • An Open circuit diode works as an open switch.
  • Hence a diode acts as a Bi-Stable switch.

 

Additional Information 

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Forward Biased:

  • The diode is said to be forward-biased when the P region is connected to a more positive terminal and N region is connected to the negative terminal of the battery.
  • A forward-biased diode offers very little resistance to the flow of current and hence a large current flow through the diode.
  • When forward biased, the diode acts as an ON switch.

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Reversed Biased:

  • A diode is said to be reversed biased when the P terminal is connected to lower potential than the N terminal
  • A reverse-biased diode offers very large resistance to the flow of current and hence a small minority of current flows through the diode

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