Zener Breakdown and P-N Junction Diodes Quiz
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Questions and Answers

What happens when a small reverse biased voltage is applied to a heavily doped p-n junction diode?

  • The diode stops conducting
  • The depletion region widens
  • Strong electric field is produced in a small width of depletion region (correct)
  • The diode becomes forward biased

    • What causes the zener breakdown in a p-n junction diode?

  • The diode is under no bias
  • The diode becomes forward biased
  • Covalent bonds in the depletion region are directly broken up by a strong electric field (correct)
  • The temperature of the diode increases

    • What is the result of a large force exerted on covalent bonds in a heavily doped p-n junction diode?

  • The diode becomes forward biased
  • Covalent bonds are broken up and large electron hole pairs become free (correct)
  • The depletion region widens
  • The diode stops conducting

    • What is the reverse bias voltage at which zener breakdown takes place called?

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