While measuring potential at an infinite point, it is assumed to be zero. While measuring potential over the earth's surface, again we take it as zero. How can we define zero two times?
'Potential' of what exactly? Mechanics potential energy, electrical / magnetic fields, gravity, etc. - describe the context and the specific frames of reference. The two points you mention, superficially, already have a problem because they mix a theoretical abstract mathematical basis ( 'infinite' ) and a measurable physical observation ( Earth's surface ).
Michael John Patrick
Thank you so much, Sir. Here I am trying to ask about the potential of electrical energy at an infinite point and on the earth's surface.
Well, that narrows it down to just half the electromagnetic spectrum, and from the Earth's surface to the edge of the observable universe. : -)