A square surface of side `L` metre in the plane of the paper is placed in a uniform electric field `E ("volt"//m)` acting along the same place at an anlge `theta` with the horizontal side of the square as shown in figure. The electric flux linked to the surface in uint of `V-m` is

Options

A. `EL^(2)`
B. `EL^(2) cos q`
C. `EL^(2) sin q`
D. zero for both points inside and outside the sell

Answer

D

Explanation

Flux of electrif field E through any area A is defined as f= E A cos q or f=E. A=0 the lines are paralleld to the surface.