Step 1: Calculate the force between the charges using Coulomb's law formula:
\[ F = \frac{1}{4\pi \epsilon_0} \cdot \frac{Q_1 \cdot Q_2}{r^2} \]
Given that \( F = 2 \, \text{N} \), \( Q_1 = 3 \times 10^{-6} \, \text{C} \), and \( r = 2 \times 10^{-4} \, \text{m}
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