Question
Write the definition of electrostatic potential. Tell whether it is a vector or a scalar quantity ? Also write its SI unit and dimensional formula.

Answer

→"Work done in bringing unit positive charge from infinity to the given point in the electric field against the electric field is called electrostatic potential ( $V$ ) at that point."
OR
→"In the region of static electric field, electric potential at any point means work done by external force in bringing unit positive charge from infinity to that point, without acceleration."
Electrostatic potential is a scalar quantity.
Its SI unit is : V (Volt) OR J/C.
Its DF (Dimensional Formula) is $M ^1 L^2 T^{-3} A^{-1}$

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