When `n-p-n` transistor is used as an amplifier :

When an n-p-n transistor is used as an amplifier, then

When an n-p-n transitor is used as an amplifier?

When the transistor is used as an amplifier

With the help of a labelled circuit diagram, explain how an n-p-n transistor can be used as an amplifier in common-emitter configuration. Explain how the input and output voltages are out of phase by 1800 for a common-emitter transistor amplifier.

When NPN transistor is used as an amplifier, then