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AP EAMCET201922 Apr 2019Morning ShiftPhysicsSemiconductorsActual

Three amplifiers with voltage gains 10,20 and 30 are connected in series. If the input signal has a peak value of (1 mV ) then the peak value of the output voltage is

Options

  1. A(6 ~V )
  2. B(60 ~V )
  3. C(0.6 ~V )
  4. D(0.06 ~V )

Correct answer

A. (6 ~V )

Step-by-step solution

Given, voltage gains of three amplifiers, (A₁=10, A₂=20 and A₃=30 ) peak value of input signal (V_i=1 mV =10⁻³ ~V ) Total gain of three amplifiers connected in series is given by (A=A₁ A₂ A₃=10 20 30 A=6000 ) But, (A= V₀ V_ in V₀=A V_ in =6000 10⁻³=6 ~V )

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