If the electric flux entering and leaving an enclosed surface respectively is `phi_1` and `phi_2`, the electric charge inside the surface will be

Options

A. `(phi_2-phi_1)epsilon_0`
B. `((phi_1+phi_2))/epsilon_0`
C. `((phi_2-phi_1))/epsilon_0`
D. `(phi_2+phi_1)epsilon_0`

Answer

A

Explanation

Net flux =`q_(in)/e_0 implies q_(in) =e_0` (net flux) `=e_0 (phi_2-phi_1)`