Draw a circuit diagram of a common emitter amplifier using n-p-n transistor. Derive an expression for the current gain

Question

Philoid · Accepted Answer

The common emitter amplifier in n-p-n configuration is as follows:

Current gain in a circuit is defined by the ratio of the collector current(I_C) to the base current (I_B) when the collector-emitter voltage is constant (V_CE).

Hence,