Question

Across the depletion region, there is a barrier potential which

• A. prevents the movement of electron from the n region into the p region
• B. prevents the movement of electron from the p region into the n region
• C. prevents the movement of holes from the n region into the p region
• D. prevents the movement of holes from the p region into the n region

Answer 1

The correct option is A prevents the movement of electron from the n region into the p region

The potential difference due to negative immobile ions on p-side of the junction and positive immobile ions on n-side of the junction is called potential barrier. It prevents the movement of electrons from n to p side of junction and holes from p to n side of the junction.