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MHT CET202613 April 2026Evening ShiftPhysicsSemiconductorsActual

If transistor having = 0.9 , is used in CE configuration, then for a change of 0.4 mA in base current, what will be the change in collector current?

Options

  1. A3.6 mA
  2. B4 mA
  3. C0.9 mA
  4. D36 mA

Correct answer

A. 3.6 mA

Step-by-step solution

The current gain in common emitter configuration is given by = 1 - . Substituting = 0.9 : = 0.9 1 - 0.9 = 0.9 0.1 = 9 The change in collector current is related to the change in base current by I_C = I_B . Given I_B = 0.4 mA: I_C = 9 0.4 = 3.6 mA.

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