Question

according to gauss law,flux=

Answer 1

B.A
thank u............

Answer 2

According to Gauss law, electric flux is the ratio of net charge enclosed by Gaussian surface to permittivity of medium.
e.g., $\Phi=\frac{Q_{net}}{\epsilon_0}$

well, general definition of electric flux is dot product of electric field vector and area vector.
e.g., $\Phi=\vec{E}.\vec{A}$

so, you can also write Gaussian electric flux ,
$\Phi=\vec{E}.\vec{A}=\frac{Q_{net}}{\epsilon_0}$