A sphere encloses an electric dipole with charges ± 3 × ${10}^{-6}$ C. What is the total electric flux across the sphere?

${\mathrm{\varphi }}_{\text{Total }}=\frac{{\mathrm{q}}_{\text{enclosed }}}{{\mathrm{\epsilon }}_0}$

Dipole have equal and opposite charge, so net charge inside the sphere will be zero$\left({\mathrm{q}}_{\text{enclosed }}=0\right)$

${\mathrm{\varphi }}_{\text{Total }}=\frac{0}{{\mathrm{\epsilon }}_0}=0$