Four infinite uniform sheets of charges with following uniform charge density are placed at different points in space as following : Sheet-1 : 20 pC/m^2 at y = 7; Sheet-2 : -8 pC/m^2 at y = 3; Sheet-3 : 6 pC/m^2 at y = -1; Sheet-4 : -18 pC/m^2 at y = -4. Find the magnitude of Electric field E at point P(2, 6, -4). Consider relative permittivity of the medium as 1.
- A. 40/(18π) V/m
- B. 40π V/m
- C. 18π/25 V/m
- D. 18π V/m