Physics Answer the following in Brief

Explain the formation of energy band diagram in case of conductor and semiconductor.

Explain the working of transistor as a switch.

What is Zener diode? How is it used as a voltage regulator?

Explain with a neat diagram, how a p-n junction diode is used as a half wave rectifier.

With the help of neat labelled circuit diagram explain the working of half wave rectifier using semiconductor diode. Draw the input and output waveforms.

Define \(\alpha_{ dc }\) and \(\beta_{ dc }\). Obtain the relation between them.

When does p-n junction diode act as a closed switch and as an open switch? State any four advantages of semiconductor devices.

Draw a neat circuit diagram to study the characteristics of common emitter n-p-n transistor. With the help of a graph, explain the output characteristics of this transistor.

Explain the working of n-p-n transistor in common base configuration.

What are a and ẞ parameters for a transistor? Obtain a relation between them.

Explain the working of P-N junction diode in forward and reverse biased mode.