Four positive point charges( +q) are kept at the four corners of a square of a side 'l'. The net electric field at the mid point of any one side of the square is, (take `1/(4 pi epsilon_0)` = K)

Options

A. `(4Kq)/(1^2)`
B. `(16 Kq)/(5sqrt(5)I^2)`
C. `(8 Kq)/(sqrt(5)1^2)`
D. `(Kq)/(1^2)`

Answer

B