A point charge is placed at each corner of a square with side length ( a ). Find the components of the electric field at point P located at the center of the square.
a) ( 1/4πϵ₀q/a² )
b) ( 1/2πϵ₀q/a² )
c) ( 1/πϵ₀q/a² )
d) ( 2/πϵ₀q/a² )