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

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

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Analog Electronics
In all base driver amplifiers

ac emitter voltage is 180° out of phase with ac base voltage
ac collector voltage is 180° out of phase with ac base voltage
ac collector voltage is in phase with ac base voltage
None of these

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