Analog Electronics
The base of an npn transistor is thin and

 heavily doped.
 metallic.
  lightly doped.
 doped by a pentavalent material.

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Analog Electronics
Conventional biasing of a BJT has

  EB reversed biased and CB forward biased.
  EB reversed biased and CB reversed biased.
  EB forward biased and CB reversed biased.
  EB forward biased and CB forward biased.

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