99 \times 10^9 \, \text{N m}^2/\text{C}^2 \)),
- \( q \) is the charge of the point charge (\( 9.2 \, \mu C = 9.2 \times 10^{-6} \, C \)),
- \( r \) is the distance from the point charge to the point where the potential is being calculated.
**
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