Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance – Revision Notes

Quick revision notes for Class 12 Physics Chapter 2 (Electrostatic Potential and Capacitance). These Class 12 Physics Chapter 2 notes are ideal for quick revision just before exams.

Potential

• V=kq/r (point charge); scalar quantity.
• Equipotential surfaces: perpendicular to field lines; no work done moving charge along them.
• E=−dV/dr.

Capacitors

• C=Q/V; parallel plate: C=ε₀A/d (vacuum), Kε₀A/d (dielectric).
• Series: 1/C=1/C₁+1/C₂+…; Parallel: C=C₁+C₂+…
• Energy: U=½CV²=Q²/2C.

One-Line Summary

Electric potential is the scalar potential energy per unit charge; capacitors store charge and energy, with capacitance boosted by dielectrics and combined via series/parallel rules.

Written by Satish

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