Electric field-intensity of electric field

Electric field is nothing but the space around an electric charge where the electric force due to charge is felt by another charge.
The intensity of electric field or Electric field strength at a point in space is defined as the force experienced by unit positive charge placed at that point.
Suppose we place a test charge q at the point and the force experienced by it is F, then
field strength E=F/q, from it we can obtain the force on the charge F=Eq, here q is test charge taken to be infinitesimally small and positive because we have to take unit positive charge actually, but it is not possible, so that we take like that, unit positive charge is ideal thing.
If the electric field intensity is same in both magnitude and direction at every point of the field, then that electric field is uniform electric field.
If the electric field intensity changes from point to point of the electric field either in magnitude or in direction or in both then that electric field is called non-uniform electric field