Khimraj8 Years agoEletric field intensity is given by kq/r2SInce both charge are equal and at are equal distance from point.So magnitude of electric field due to these charge will be equal but will be in opposite direction.So resultant electric field intensity at midpoint will be zero.Hope it clears.
KhimrajApproved Tutor Answer8 Years agosorry i understand both charge of same sign.If both are of opposite sign then direction should be toward -ve charge.