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AP EAMCET201920 Apr 2019Evening ShiftPhysicsSemiconductorsActual

In a transistor, the value of varies between 20 21 and 100 101 . Then the value of varies between

Options

  1. A1 and 10
  2. B0.95 and 0.99
  3. C20 and 100
  4. D200 and 300

Correct answer

C. 20 and 100

Step-by-step solution

Given, in a transistor current gain, = 20 21 and 100 101 Now, common emitter transistor DC current gain, = 1- Case I If = 20 21 , then = 20 21 1- 20 21 =20 Case II = 100 101 , then = 100 101 1- 100 101 =100 Value of varies between, [20,100] .

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