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## Main Question or Discussion Point

If you know Vector E at a given point .Can you calculate V at that point ?

Answer is No.Since ##V##=##∫E^→.dr^→##

the integration involves constant of integration and hence boundary conditions (limit of integRation)must be known to find V.

My question is

Isn't dr needed?

Answer is No.Since ##V##=##∫E^→.dr^→##

the integration involves constant of integration and hence boundary conditions (limit of integRation)must be known to find V.

My question is

Isn't dr needed?