Question

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

• A. 250
• B. 500
• C. 125
• D. 50

Answer 1

Answer: (A)

250

Answer 2

Voltage gain, $A_{v}=\beta\times\frac{R_{o}}{R_{i}}=50\times\frac{5}{1}=250$