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Semiconductor Electronics: Materials, Devices And Simple Circuits

Question
CBSEENPH12047984

A transistor connected at common emitter mode contains load resistance of 5 kΩ and an input resistance of 1 kΩ. If the input peak voltage is 5 mV and the current gain is 50, find the voltage gain.

  • 250

  • 500

  • 125

  • 50

Solution

A.

250

Load resistance = 5 kΩ

Input resistance = 1 kΩ

β = 50

Voltage gain Av = β × R0Ri

                        = 50 × 51

               Av = 250