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AP EAMCET2002PhysicsSemiconductors

A common emitter transistor amplifier has a current gain of 50 . If the load resistance is 4 k and input resistance is 500 , the voltage gain of the amplifier is

Options

  1. A100
  2. B200
  3. C300
  4. D400

Correct answer

D. 400

Step-by-step solution

aligned =50, R_L=4 k & =4000 R_i & =500 & = I_c I_b aligned Voltage gain of amplifier aligned & = output voltage input voltage = I_c R_L I_b R_i & = ( R_L R_i )= 50 4000 500 =400 aligned

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