Physics · JEE

Important Questions: Potential difference, equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field for JEE

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The most important Potential difference, equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field questions for JEE cover conceptual traps, standard results, and numerical patterns from Potential difference, equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field. Goodmarks provides 8+ high-yield MCQs with full solutions.

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Syllabus context

Part of Electrostatics in JEE Main Physics.

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Q1PhysicsUnit 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)

Q2PhysicsUnit 11: Electrostatics

An example of an equipotential surface in earth is

Q3PhysicsUnit 11: Electrostatics

Work done in moving an object through an equipotential surface is

Q4PhysicsUnit 11: Electrostatics

A diverging electron beam enters a region of varying potentials. Intersection of equispaced equipotential plane surfaces with the plane of the paper are shown, with their potentials mentioned in the figure. If before entering this region,

x

and

y

components of the velocity of electrons

\operatorname{are} 3 \sqrt{\frac{2 e v}{m}}

and

\sqrt{\frac{e v}{m}},

respectively, where

m

is the mass of an electron and

e

is the electronic charge, then : This question has multiple correct options

Q5PhysicsUnit 11: Electrostatics

The equi-potential surface in the region are

Q6PhysicsUnit 11: Electrostatics

What is the shape of the equipotential surface for the line charge?

Q7PhysicsUnit 11: Electrostatics

Potential difference between two points is equal to

Q8PhysicsUnit 11: Electrostatics

In a uniform electric field, equipotential surfaces must: This question has multiple correct options

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What makes a Potential difference, equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field 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 Potential difference, equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field. Prioritise these before moving to edge cases.

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