A square surface of side `L m` is in the plane of the paper. A uniform electric field `vec(E )(V//m)`, also in the plane of the paper, is limited only to the lower half of the square surface (see figure). The electric flux in `SI` units associated with the surface is:

Options

A. zero
B. `EL^(2)`
C. `EL^(2)//(2 epsilon_(0))`
D. `EL^(2)//2`

Answer

1

Explanation

`phi = vec(E ). vec(S) = E hat(i) .(L^(2))/(2) hat(j) = 0`