---
title: "permittivity of free space"
source: https://www.jemoka.com/posts/kbhpermittivity_of_free_space/
---

permittivity of free space is a constant \(\epsilon_{0} \approx 8.85 \times 10^{-12} \frac{C^{2}}{N \cdot m^{2}}\).
redefinition of Coulomb&rsquo;s Constant based on permittivity of free space \begin{equation} k = \frac{1}{4\pi \epsilon_{0}} \end{equation}
