Date

07-01-2026

Direction or Paragraph

Case study based question

1

p-n junction is a semiconductor diode. It is obtained by bringing p-type semiconductor in close contact with n- type semiconductor. A thin layer is developed at the p- n junction which is devoid of any charge carrier but has immobile ions. It is called depletion layer. At the junction a potential barrier appears, which does not allow the movement of majority charge carriers across the junction in the absence of any biasing of the junction. p-n junction offers low resistance when forward biased and high resistance when reverse biased.

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Instruction

1

What is PN Junction Diode?

Answer Format

Document

Solution

When P- type Semiconductor is dopped with N- Type Semiconductor then this is called PN Junction.

2.

What is potential barrier?

Answer Format

document

Solution

Maximum potential in reversed biased is called potential barrier.

3

In the middle of depletion layer of reverse biased p- n junction, the

A

The Electric field is zero

B

Potential is zero

C

Potential is maximum

D

Electric field is maximum

E

Answer

C

Solution

When the junction is reversed biased the depletion layer increased due to this happening the potential is maximum.