1. What is a Bipolar Junction Transistor (BJT)? A BJT is a semiconductor device that can amplify or switch electronic signals. It consists of three regions: the emitter, base, and collector. BJTs can be of two types: NPN and PNP, based on the arrangement of n-type and p-type materials. 2. Describe

1. Explain the principle of operation for an NPN transistor. In an NPN transistor, when the base-emitter junction is forward-biased, electrons flow from the emitter to the base. A small number of these electrons recombine with holes in the base, while the majority continue to the collector, allowi