Analog Electronics
The value of total collector electric current in a CB circuit is

  IC = αIE - ICO.
  IC = αIE + ICO.
  IC = βIE.
  IC = αIE.

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Analog Electronics
For an NPN transistor in normal bias

  only majority carriers cross the collector junction.
  Je is forward biased and Jc is reverse biased.
  only holes cross the collector junction.
  the emitter junction has high resistance.

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