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Analog ElectronicsTransistor Amplifiers

The Early effect in a BJT causes collector current in the active region to?

  • ABe completely independent of VCE
  • BIncrease somewhat as VCE increases at fixed base drive
  • CBecome exactly zero
  • DReverse direction at all times
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Correct Answer: B. Increase somewhat as VCE increases at fixed base drive
Explanation: Base-width modulation causes collector current to depend slightly on collector-emitter voltage, giving a finite transistor output resistance.
Reference: Standard analog electronics: transistor amplifiers
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