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MHT CET202020 Oct 2020Evening ShiftPhysicsSemiconductorsActual

In a study of transistor as an amplifier, the ratio of collector current to emitter current is 0.98 . The collector current is 3 ~mA , then base current will be approximately

Options

  1. A6 ~mA
  2. B60 ~mA
  3. C6 A
  4. D60 A

Correct answer

D. 60 A

Step-by-step solution

i_ c i_ c =0.98 i_ c =3 ~mA i_ b =? i_ c i_ c +i_ b =0.98= 98 100 i_ c +i_ b i_ c = 100 98 1+ i _ b i _ c = 100 98 i _ b i _ c = 2 98 i _ b =3 2 98 = 3 49 ~mA = 3000 49 A =61.22 A 60 A

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