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 Quote by Naty1 It's just an operational definition for convenience. The reference could have been chosen as -100 volts at infinity; very often in circuit problems earth is assigned "zero" volts as the reference potential...
Thank you,
the value at infinity is really irrelevant.
The point is the remainder of the definition:

is velocity important or not? if it is not , why bother?
if it is (as it figures), in what way is it relevant? is it a matter of MF?

please see previous post #25, and also 18,19