Answer to Question #100886 in Physics for Kishwer

Question

Why transistor work in active region ? Explain

Answer 1

The active region is the region in which transistors have many applications. This is also called as linear region. A transistor while in this region, acts better as an Amplifier.

This region lies between saturation and cutoff. The transistor operates in active region when the emitter junction is forward biased and collector junction is reverse biased. In the active state, collector current is β times the base current, i.e.,

$$I_C=\beta I_B$$