What is electric field intensity at a point at a distance r meter from q coulomb of a charge in free space ?

Electric field intensity is |vecE| at a distance r from an isolated point charge. Then

What is the electric field intensity at a distance r from a charge q placed in vacuum ?

The electric field intensity at a point located at distance r(r lt R) from the center of a spherical conductor (radius R) charged Q will be-

" Electric field intensity due to a point charge " "q" ' at a distance 'r' from it is "

A cylinder of length L has a charge of magnitude q. The electric intensity at a point at a distance r from the axis of the cylinder is

A sphere of radius R has a charge density sigma . The electric intensity at a point at a distance r from its centre is

The electric field intensity is |vecE| at a distance x meter from the centre of the sphere of radius r. If x < r then |vecE|