A charge Q is uniformly distributed over a rod of length `iota`. Condider a hypothetical cube of edge `iota` with the centre of the cube at one end of the rod. Find the minimum possible flux of the electric field through the entire surface of the cube.

Explanation

To solve the problem, we need to find the minimum possible electric flux through the entire surface of a cube that has one end at the center of a uniformly charged rod of length \( l \) with total charge \( Q \).

### Step-by-Step Solution:

1. **Understand the Configuration**:
- We have a rod of length \( l \) with a total charge \( Q \) uniformly distributed along its length.
- A cube with edge length \( l \) is positioned such that its center is at one end of the rod.

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