gauss's law

Question

Gauss's law relates flux through closed surface to:

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Gauss's Law is one of the four Maxwell's equations. It states that the total electric flux ($\Phi_E$) through any closed Gaussian surface is equal to the net electric charge ($q_{enc}$) enclosed by that surface divided by the permittivity of free space ($\epsilon_0$):
$\Phi_E = \oint \vec{E} \cdot d\vec{A} = \frac{q_{enc}}{\epsilon_0}$
- Charges outside the surface do not contribute to the net flux.

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