Four identical point charges are placed at the corners of a square, A fifth point charge placed at the center of the square experiences zero net force . Is this a stable equilirium for the fifth charge? Explain.

Explanation

To determine if the fifth point charge placed at the center of the square experiences stable equilibrium, we need to analyze the forces acting on it when it is slightly displaced from the center.

### Step-by-Step Solution:

1. **Understanding the Setup**:
- We have four identical point charges located at the corners of a square.
- A fifth point charge is placed at the center of the square.

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