Question

A p-n junction is a/an
A. Bidirectional component
B. Unidirectional component
C. Linear component
D. None of these

Answer 1

Inside a single crystal of semiconductor, a p–n junction is a border or interface between two types of semiconductor materials, p-type and n-type. In the outer shells of the electrically neutral atoms on the "p" (positive) side, there are more holes than electrons, while on the "n" (negative) side, there are more electrons. This allows only one direction of electrical current to travel through the junction.

Complete answer:
A 'unidirectional' electronic device is a P-N junction diode. P-type and N-type semiconductor materials are joined to form a p-n junction diode. A depletion area forms at the junction when P-type and N-type materials are joined. If you apply forward bias to the diode, it will conduct. It will not run if this is not the case. A semiconductor diode is a one-way electronic device, meaning that current flows in just one direction.

A p-n junction diode's symbol is shown in the diagram. Anode refers to the terminal connected to the P material, while Cathode refers to the terminal attached to the N-type material.

So, the correct option is B.

Note: P–n junctions are the active sites of semiconductor electronic devices like diodes, transistors, solar cells, LEDs, and integrated circuits; they are the "building blocks" of semiconductor electronic devices like diodes, transistors, solar cells, LEDs, and integrated circuits. A bipolar junction transistor, for example, is made up of two p–n junctions connected in series in the configuration n–p–n or p–n–p, whereas a diode can be made up of a single p–n junction. A Schottky junction is a form of p–n junction in which the n-type semiconductor is replaced by metal.