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COMEDK2016PhysicsSemiconductors

In a CE amplifier, =50, R_ L =4 k , R_ i =500 . Power gain of the amplifier is

Options

  1. A2 10⁴
  2. B2 10²
  3. C2 10³
  4. D2 10¹

Correct answer

A. 2 10⁴

Step-by-step solution

Given, current gain, =50 Input resistance, R_ i =500 Output resistance, R_ L =4 k =4000 Voltage gain = Current gain R_ L R_ i =50 4000 500 =400 Power gain = Current gain Voltage gain =50 400=2 10⁴

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