Two point charges ` 6 mu C and 2 mu C ` are separated by 3 cm in free space. Calculate the work done in separating them to infinity.

Explanation

To calculate the work done in separating two point charges to infinity, we can follow these steps:

### Step 1: Understand the Concept of Potential Energy
The potential energy (U) between two point charges is given by the formula:
\[ U = \frac{1}{4\pi \epsilon_0} \cdot \frac{Q_1 \cdot Q_2}{r} \]
where:
- \( Q_1 \) and \( Q_2 \) are the magnitudes of the charges,
- \( r \) is the distance between the charges,
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