Four identical charges +Q are kept at the corners of a square ABCD. The edge length of square is a . Find net force on the charge kept at C due to the other three charges.

Explanation

To find the net force on the charge at point C due to the other three charges located at points A, B, and D in a square configuration, we can follow these steps:

### Step 1: Identify the forces acting on charge C
The charge at point C experiences forces due to the charges at points A, B, and D. We will denote these forces as:
- \( F_{A} \): Force due to charge at A
- \( F_{B} \): Force due to charge at B
- \( F_{D} \): Force due to charge at D

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