NEET Physics Semiconductor Electronics Questions Solved

NEET - 2010

A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω and an output impedance of 200Ω. The power gain the amplifier is

(a) 500         (b) 1000

(c) 1250       (d) 50

  Voltage gain =β ×impedance gain

               50= β ×200100β= 25

  Also, power gain =β2 × impedance gain

                           = (25)2 ×200100=1250

Difficulty Level:

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