Two particles A and B, having opposite charges`2.0xx 10^(-6)` and `-2.0 xx10^(-6)`C , are placed at a separaton of 1.0 cm.(a) write down the electric dipole moment (b) Calculate the electric field at a point on the axis of the dipole 1.0 m away from the centre. (c ) Calculate the electric field at a point on the perpendicular bisector of the dipole and 1.0 m away from the centre.

Explanation

`(a) Dipole moment=qxx1 `
` [where q=magnitude of charge,
l=separation between the charges] `
` =2xx10^-6xx10^-2 c-m `
` =2xx10^-8 c-m `
(b) We know, electricfield at axial point of the `dipole=36xx10^7N//C `
(c) We know electric field at a pont on
the perpendicular bisector about 1m away from the centre of dipole
` =180N//C `