Question

Which of the following is correct statement for voltage gain of n-p-n transistor in common emitter configuration?

• A. $A_V$ increases continuously with increase in input voltage.
• B. $A_V$ remains almost zero, then increases, decreases and again becomes zero with increase in input voltage.
• C. $A_V$ is high, then decreases, then increases and becomes constant with increase in input voltage.
• D. $A_V$ remains constant with increase in input voltage.

Answer 1

Answer: (B)

$A_V$ remains almost zero, then increases, decreases and again becomes zero with increase in input voltage.

In common emittor configuration, $n-p-n$ transistor's voltage gain has $A_V=$ almost zero, then increases, decreases and again becomes zero with increase in input voltage.