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MHT CET20225 Aug 2022Morning ShiftPhysicsSemiconductorsActual

A transistor is used as a common emitter amplifier with a load resistance 2 k . The input resistance is 150 , Base current is changed by 20 A which results in a change in collector current by 1.5 ~mA . The voltage gain of the amplifier is

Options

  1. A1100
  2. B1000
  3. C900
  4. D12000

Correct answer

B. 1000

Step-by-step solution

The correct option is (B). Concept: The voltage gain is given by = I_C I_B = 1.5 ~mA 20 A =75 And the voltage gain can be written as, V ₀ ~V _ i = R _ L R _ i =75 2000 150 =1000

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