PN Junction Diode Multiple Choice Questions Answers


16. A reverse-biased PN junctions has


   A.A net electron current

   B.A net hole current

   C.A very narrow depletion layer

   D.Almost zero current


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D.Almost zero current

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17. The depletion layer of a PN junction diode has


   A.Only free mobile holes

   B.Only free mobile electrons

   C.Both free mobile holes as well as electrons

   D.Neither free mobile electrons nor holes


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D.Neither free mobile electrons nor holes

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18. The depletion region of a PN junction is one that is depleted of


   A.Immobile charges

   B.Mobile charges

   C.Atoms

   D.None of the above


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B.Mobile charges

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19. The potential barrier existing across a PN junction corresponds to


   A.Width of the barrier

   B.Reverse bias of the junction

   C.Forward bias of the junction

   D.Height of the barrier


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D.Height of the barrier

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20. Mobile electrons of P-side of the PN junction diode constitute


   A.Minority current carriers

   B.Majority current carriers

   C.Depending upon voltage they may be either majority or minority current carriers

   D.None of the above


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A.Minority current carriers

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