# Gauss’s Law for Electrostatics

So after a flux discussion, we reasoned our way to Gauss’s Law for Electrostatics.
DUML physheads must know this inside and out (of any closed surface)!

$\oint_S \vec{E} \cdot \hat{n} dA = \frac{Q_{inS}}{\epsilon_o} = \frac{1}{\epsilon_o} \int_{V/S} \rho_e dV$