Electrostatics
Electrostatics is one of the most fundamental and high-weightage chapters in JEE Main Physics.
It introduces electric charges, electric fields, electric potential, capacitors, and electrostatic energy.
A strong understanding of this chapter builds the foundation for current electricity and electromagnetic topics.
Topics Covered
- Electric Charge and Conservation of Charge
- Coulomb’s Law
- Electric Field and Field Lines
- Electric Dipole
- Torque on Dipole
- Electric Flux
- Gauss’s Law
- Electric Potential and Potential Difference
- Equipotential Surfaces
- Capacitance
- Parallel Plate Capacitor
- Combination of Capacitors
- Energy Stored in Capacitor
- Dielectrics
Important Formulas
Coulomb’s Law:
F = k(q₁q₂)/r²
Electric Field:
E = kq/r²
Electric Potential:
V = kq/r
Capacitance:
C = Q/V
Parallel Plate Capacitor:
C = ε₀A/d
Energy Stored in Capacitor:
U = ½CV²
JEE Main Preparation Tips
- Master Coulomb’s law and vector-based force problems.
- Practice electric field and potential numerical questions.
- Understand Gauss’s law applications thoroughly.
- Memorize capacitor formulas and energy relations.
- Solve previous year JEE Main questions for speed and confidence.
