A charge q is placed at the centre of a cube of side l what is the electric flux passing through two opposite faces of the cube ?

Explanation

To find the electric flux passing through two opposite faces of a cube when a charge \( q \) is placed at the center, we can use Gauss's Law, which states that the total electric flux \( \Phi \) through a closed surface is equal to the charge enclosed \( Q \) divided by the permittivity of free space \( \epsilon_0 \).

### Step-by-Step Solution:

1. **Identify the Charge and Geometry**:
- A charge \( q \) is placed at the center of a cube with side length \( l \).

2. **Apply Gauss's Law**:
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