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NEET2009PhysicsSemiconductorsActual

A transistor is operated in common-emitter configuration at V _ C =2 ~V such that a change in the base current from 100 A to 200 A produces a change in the collector current from 5 ~mA to 10 ~mA . The current gain is :

Options

  1. A50
  2. B75
  3. C100
  4. D150

Correct answer

A. 50

Step-by-step solution

aligned I _ B & =100 A I _ C & =5 ~mA & = I _ C I _ B = 5 10⁻³ 100 10⁻⁶ =50 aligned

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