A charge of ( Q ) is uniformly distributed on a ring of radius ( R ). Find the electric field strength on the axis measured from the center of the charged ring at a distance of ( x ) and ( 2x ).
a) ( kQx/(x²+R²)3/2 )
b) ( kQ/(x²+R²)3/2 )
c) ( kQ/(x+R)² )
d) ( kQx/(2x²+R²)3/2 )