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Equipotential Surface Class 12 Physics Electrostatic Potential Surfaces And Capacitance

#4. Equipotential Surface

  • Equipotential is the surface which has equal potential at every point on it.
  • Equipotential surface due to a single point charge are concentric spheres having the charge at the center. All the points on a sphere around a point charge have the same distance (radius) so all have same potential.
Equipotential Surface

  • Equipotential surface for a line charge is cylinder 

Properties of Equipotential Surface

  • Work done for moving a charge on an equipotential surface is zero
  • The potential difference between any two points on equipotential surface is zero 
  • Electric Field is always perpendicular to an equipotential surface

  • Equipotential surface for a single point charge are concentric spheres having the charge at the center
  • Two equipotential surfaces can never intersect. 
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