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NEET2015PhysicsSemiconductorsActual

A change of 8.0 mA in the emitter current brings a change of 7.9 mA in the collector current. The value of will be

Options

  1. A0.96
  2. B0.93
  3. C0.90
  4. D0.99

Correct answer

D. 0.99

Step-by-step solution

We have, aligned I_E & =I_B+I_C I_E & = I_B+ I_C aligned According to question, Thus, aligned I_E & =8.0 ~mA I_C & =7.9 ~mA I_B & =8.0 ~mA -7.9 ~mA & =0.1 ~mA aligned Thus, I_B=8.0 ~mA -7.9 ~mA Now, = I_C I_E = I_C I_E = 7.9 ~mA 8.0 ~mA 0.99

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