According to this, we say
that the charge Q produces an electric field everywhere in the surrounding When another charge q is brought at some point P, the field there acts on
it and produces a force The electric field produced by the charge Q  at a
point r is given as
E r
r
r
( ) =
=
41
41
0
2
0
2
π
π
ε
ε
rQ
rQ
ˆ
ˆ
(1 6)
where ˆ =
r
 r/r, is a unit vector from the origin to the point r