Electric flux through an area dA for an electric field E is given by
E.dA
ExdA
E/dA
(E.dA)/q
Electric flux over an area in an electric field represents the total number of electric field lines crossing this area.
Φ = E.dA
The electric field in a region is given by E=(2^i+3^j)×103NC−1 The electric flux through a rectangular surface 10cm×20cm held parallel to the y-z plance is