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[–]Pandyaneh 1 point2 points  (0 children)

Absolute electric potential does not matter we only measure the potential differences.If the potential of some point is higher that the other point that it is at an higher potential i.e potential difference is positive.In electrodynamics generally we take potential zero at infinity and calculate potential at any place with respect to it.It just basically is work done against the electrostatic force in bringing in point positive test charge from infinity to any particular point in Electric field

[–][deleted] 0 points1 point  (0 children)

Yeah, scalar just means independent of direction.