A charged metallic sphere A having charge ` q_A` is brought in contact with an uncharged metallic sphere of same radius and then separated by a distance ` d`. What is the electrostatic force between them

Explanation

To solve the problem, we will follow these steps:

### Step 1: Understand the initial conditions
We have two metallic spheres:
- Sphere A with an initial charge \( q_A \).
- Sphere B, which is uncharged (initial charge = 0).

### Step 2: Contact between the spheres
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