Give a relation between α and β for a transistor. (Derivation is not required.)

Question

TextSemiconductor Electronics Overview

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State the working principle of an LED. Write any two important advantages and two disadvantages of LED.

What is the advantage of an LED bulb over the filament electric bulb?

Semiconductor Electronics Overview

Draw a labelled circuit diagram of a transistor acting as a common emitter amplifier. What is meant by phase reversal?