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NEET2011PhysicsSemiconductorsActual

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 300 A produces a change in the collector current from 10 ~mA to 20 ~mA . The current gain is

Options

  1. A75
  2. B100
  3. C25
  4. D50

Correct answer

D. 50

Step-by-step solution

= I_C I_B = (20-10) mA (300-100) mA = 10 10⁻³ 200 10⁻⁶ =50

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