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

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

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Analog Electronics
The arrowhead on the transistor symbol points in the direction of

  majority carrier flow in the emitter region.
  minority carrier flow in the emitter region.
  electron flow in the emitter region.
  conventional electric current flow in the emitter region.

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