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MHT CET202525 Apr 2025Evening ShiftPhysicsSemiconductorsActual

In a common emitter amplifier configuration, the current gain is 62 . The collector resistance and input resistance are 5 ~K and 500 respectively. If the input voltage is 0.01 V , the output voltage will be

Options

  1. A0.62 V
  2. B6 2 ~V
  3. C62 V
  4. D620 V

Correct answer

B. 6 2 ~V

Step-by-step solution

For a common emitter amplifier, the voltage gain A_V relates to current gain through A_V = R_C R_ in . Given = 62 , R_C = 5000 , and R_ in = 500 , the voltage gain becomes A_V = 62 5000 500 = 62 10 = 620 . The output voltage is then V_ out = A_V V_ in = 620 0.01 = 6.2 V . The answer corresponds to option B .

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