The electrical field will be strongest at the ends of the rod, with density decreasing as we move further away until they are significantly spread apart at a distance of 5p with no electrical fields in the middle.

The electrical fields will form concentric circles around the rod up to a distance of 5p.

Electric field lines will radiate perpendicularly inward with density decreasing as we move further away until they are significantly spread apart at a distance of 5p.

Electric field lines will radiate perpendicularly outward with density decreasing as we move further away until they are significantly spread apart at a distance of 5p.