Chapter-2|Electrostatic Potential and Capacitance| NCERT 12th Physics:
Electrostatic Potential Due to a System of Charges:
Let there are n number of point charges q₁, q₂, q₃……. qn at distances r₁, r₂, r₃,…….. rn respectively from the point P, where electric potential is to be calculated.
Using superposition principal, resultant potential at point P.