# About fixing the potential on the surface of a conductor

In Purcell's Electricity and Magnetism, p.116 section 3.3, the author spoke about Laplace's equation and said that the boundary conditions for the potential$$\,\phi$$ on the surface of the conductor may be fixed:

In a real system the potentials may be fixed by permanent connections to batteries or other constant-potential "power supplies."

Does it mean then if I had a conductor like this one:

I would be able to set the potential $$\phi$$ on its surface to a given value by connecting it in the way below?