Electric potential and potential energy are defined only for conservative fields.
Definition in terms of work done :
Potential at any point A is equal to the amount of work done (by external agent against electric field)
in bringing a unit positive charge from infinity to that point.
VA = (W¥A / q)
Unit of potential (V) = J/C or volt
Potential at a point is said to be one volt if the amount of work done in bringing one coulomb of positive
charge from infinity to that point is one joule.
Since work and charge, both are scalars, the electric potential is a scalar quantity.
The dimensions of electric potential are = (ML2T-2 / TA)
Or [V] = ML2T-3A-1
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