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Important Questions: Electrostatics for JEE

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The most important Electrostatics questions for JEE cover conceptual traps, standard results, and numerical patterns from 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. Goodmarks provides 150+ high-yield MCQs with full solutions.

Focus on what matters most. These important Electrostatics questions cover high-weightage concepts from 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 — the topics JEE repeats every year.

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6+ important formulas for Electrostatics

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Subtopics in Electrostatics

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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

\frac{3 R}{2}

from the centre of a charged conducting spherical shell of radius

\mathrm{R}

\mathrm{E}

. The electric field at a distance

\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

120 \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

10 \mathrm{mm}

apart, is (Given mass of the oil drop=

\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

100 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

+4 \mu C

is kept at a distance of

50 \mathrm{cm}

from a charge of

-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

R

and outer radius

3 R

has a uniform charge density

\sigma c / m^{3} .

It has a spherical cavity of radius

R

as shown in the figure. the electric field at the centre of the cavity is

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Frequently asked questions

What makes a Electrostatics question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Electrostatics are high-weightage?

Key areas include 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. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.