Distinguish between intrinsic and extrinsic semiconductors.

What do you mean by doping?

A diode is called as a unidirectional device. Explain.

What do you mean by leakage current in a diode?

Discuss the biasing polarities in an NPN and PNP transistors

Explain the need for a feedback circuit in a transistor oscillator.

State De Morgan's first and second theorems

What is forbidden energy gap?

What is barrier potential?

Define forward bias.

What is rectification?

Define Zener effect

Explain the working principle of a solar cell. Mention its applications.

What is called logical variables?

Define depletion region.