What is depletion region in a p-n junction ?

Explanation

### Step-by-Step Solution:

1. **Understanding the P-N Junction**:
- A P-N junction is formed when p-type semiconductor (which has an abundance of holes as majority charge carriers) is joined with n-type semiconductor (which has an abundance of electrons as majority charge carriers).

2. **Charge Carriers in P and N Regions**:
- In the p-type region, holes are the majority charge carriers, while in the n-type region, electrons are the majority charge carriers.
- The p-type region has positive charge carriers (holes), and the n-type region has negative charge carriers (electrons).
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