Electric Potential Due To A Point Charge — the NEET Physics formula with its derivation, variables, validity constraints and worked solver.
Electric Potential due to a Point Charge Strictly valid for point charges or for the region outside a spherically symmetric charge distribution. Define Electric Potential difference as work done per unit charge moving between two points. Set reference point at infinity where V=0. Integrate the electric field E = kq/r 2 with respect to dr from infinity to r. V = - integral(E dot dr) from infinity to r. r > 0 Reference potential is 0 at infinity Confusing Electric Potential (scalar) with Electric Field (vector). Neglecting the sign of the charge q; unlike field magnitude, potential carries the sign. Assuming potential is zero where the field is zero (e.g., between two identical positive charges, field is zero but potential is positive sum). Thinking potential is infinite inside a conductor (it is constant).