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JEE Main202312 Apr 2023Morning ShiftPhysicsSemiconductorsActual

In an n-p-n common emitter (CE) transistor the collector current changes from 5 mA to 16 mA for the change in base current from 100 μ A and 200 μ A , respectively. The current gain of transistor is _____.

Options

  1. A110
  2. B210
  3. C0 . 9
  4. D9

Correct answer

A. 110

Step-by-step solution

The change in collector current for the given transistor can be written as ∆ I c = 16   mA - 5   mA = 11   mA The change in base current for the given transistor can be written as ∆ I b = 200   μ A - 100   μ A =   100   μ A The formula to calculate the current gain in CE configuration is given by β = ∆ I c ∆ I b       . . . 1 Substitute the values of the known parameters into equation (1) to calculate the required quantity

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