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Electrostatics Concepts for JEE

159+ syllabus-aligned questions available

Quick answer

Master Electrostatics by understanding definitions, standard results, and typical JEE question patterns — then practise with syllabus-aligned MCQs on Goodmarks.

Build clear conceptual foundations for Electrostatics before speed practice. This guide covers what JEE expects and how to test yourself with MCQs.

Concept explainer

Concept overview for Electrostatics covering 8 JEE syllabus subtopics including Electric charges: conservation of charge, Coulomb's law forces between two point charges, forces between multiple charges, superposition principle and continuous charge distribution, Electric field: electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in a uniform electric field, Electric flux, Gauss's law and its applications to find field due to infinitely long uniformly charged straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell.

Key points

  • Understand the definition and scope of Electric charges: conservation of charge, Coulomb's law forces between two point charges, forces between multiple charges, superposition principle and continuous charge distribution in the JEE syllabus
  • Memorise key formulas and standard results linked to Electric charges: conservation of charge, Coulomb's law forces between two point charges, forces between multiple charges, superposition principle and continuous charge distribution
  • Practise 20–40 syllabus-aligned MCQs with step-by-step solutions
  • Understand the definition and scope of Electric field: electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in a uniform electric field in the JEE syllabus
  • Memorise key formulas and standard results linked to Electric field: electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in a uniform electric field
  • Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

  • Revise Electric charges: conservation of charge, Coulomb's law forces between two point charges, forces between multiple charges, superposition principle and continuous charge distribution with a one-page formula sheet before attempting mixed tests
  • After each practice set, log mistakes specific to Electric charges: conservation of charge, Coulomb's law forces between two point charges, forces between multiple charges, superposition principle and continuous charge distribution and reattempt after 48 hours
  • Revise Electric field: electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in a uniform electric field with a one-page formula sheet before attempting mixed tests
  • After each practice set, log mistakes specific to Electric field: electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in a uniform electric field and reattempt after 48 hours

Common trap

Students often rush Electric charges: conservation of charge, Coulomb's law forces between two point charges, forces between multiple charges, superposition principle and continuous charge distribution questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

JEE Formula Sheet

6+ important formulas for Electrostatics

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Subtopics in Electrostatics

View Electrostatics formula sheet — 6+ JEE formulas

Free sample questions

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Q1PhysicsUnit 11: Electrostatics
We cannot see anything in a dark room because:
Q2PhysicsUnit 11: Electrostatics
The electric field at a distance 3R2\frac{3 R}{2} from the centre of a charged conducting spherical shell of radius R\mathrm{R} is E\mathrm{E}. The electric field at a distance R2\frac{\boldsymbol{R}}{\mathbf{2}} from the centre of the sphere is :
Q3PhysicsUnit 11: Electrostatics
A particle with a charge of 3 coulombs is taken from a point at a potential of 50 V to another point at a potential of 120V120 \mathrm{V} Calculate the work done.
Q4PhysicsUnit 11: Electrostatics
The voltage required to balance an oil drop carrying 10 electrons between the plates of a capacitor which are 10mm10 \mathrm{mm} apart, is (Given mass of the oil drop= 3⋅2×10−15kg,e=1.6×10−19C)\left.\mathbf{3} \cdot \mathbf{2} \times \mathbf{1 0}^{-\mathbf{1 5}} \mathbf{k g}, \boldsymbol{e}=\mathbf{1 . 6} \times \mathbf{1 0}^{-\mathbf{1 9}} \mathbf{C}\right)
Q5PhysicsUnit 11: Electrostatics
The top of the atmosphere is about 400 kV with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about 100Vm−1100 V m^{-1} Still, we do not get an electric shock as we step out of our house into the open house, because (assume the house to be a steel cage so that there is no field inside)
Q6PhysicsUnit 11: Electrostatics
A charge of +4μC+4 \mu C is kept at a distance of 50cm50 \mathrm{cm} from a charge of −6μC-6 \mu C. Find the two points where the potential is zero
Q7PhysicsUnit 11: Electrostatics
The electric potential due to a dipole at a point on the perpendicular bisector of its length is :
Q8PhysicsUnit 11: Electrostatics
A thick shell with inner radius RR and outer radius 3R3 R has a uniform charge density σc/m3.\sigma c / m^{3} . It has a spherical cavity of radius RR as shown in the figure. the electric field at the centre of the cavity is

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What concepts in Electrostatics are essential for JEE?

Focus on core ideas across Electric charges: conservation of charge, Coulomb's law forces between two point charges, forces between multiple charges, superposition principle and continuous charge distribution, Electric field: electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in a uniform electric field, Electric flux, Gauss's law and its applications to find field due to infinitely long uniformly charged straight wire, uniformly charged infinite plane sheet and uniformly charged thin spherical shell, Electric potential and its calculation for a point charge, electric dipole and system of charges, and more. JEE tests application, not just memorisation.

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