I don't think the rings are for anything. They are just there.
The Mab Ring.
Uranus has rings that are almost vertical. The angle of the ring in a planet is equal to the axis of rotation of the planet. Uranus has an axis of around 98o. This makes the ring of the planet almost vertical.
Yes Uranus has a rings. Its rings are special because they wobble. You can not see them from a telescope,
Four planets have a ring system * Jupiter * Saturn * Uranus * Neptune
Saturn has the most prominent ring system, however, Jupiter and Uranus also have a ring system but not as well defined. Neptune has a fragmented ring system, which means it isn't complete.
Rings around Venus were created by dust and debris collected form space around the planet by its gravity.
Uranus
Each of the four outer gas planets has a ring system. These four outer planets are Jupiter, Saturn, Uranus and Neptune.
Uranus has the second largest ring system after Saturn.
Uranus
Uranus
Blue Waffle