Electrostatic potential on a 3d object

[Cargnelutti]

How to calculate the eletrostatic potential on a 3d object, for example a ring, if it is charger with some "Q" charge what is the potential on the surface of the ring?And how do i calculate it based on the charge of the ring?

 

[haruspex]

Summary: How to calculate the eletrostatic potential on a 3d object?

How to calculate the eletrostatic potential on a 3d object, for example a ring, if it is charger with some "Q" charge what is the potential on the surface of the ring?And how do i calculate it based on the charge of the ring?

There is no general method, and it has only been solved exactly for a few special cases. See e.g. https://www.victoria.ac.nz/scps/about/staff/pdf/Electrostatics_of_a_family_of_conducting_toroids.pdf.