Q1PhysicsUnit 11: Electrostatics
We cannot see anything in a dark room because:
Physics · JEE
Electrostatics Short Tricks for JEE
159+ syllabus-aligned questions available
Quick answer
Short tricks for Electrostatics work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.
Use these Electrostatics shortcuts to save time in JEE Physics papers — then validate speed with 150+ MCQs on Goodmarks.
Short tricks for speed
Electrostatics focus drill
Solve 15 mixed MCQs for Electrostatics, review every explanation, and note formulas you hesitated on.
Dimensional check first
Before solving, verify each term has consistent SI dimensions — eliminates wrong options quickly in JEE MCQs.
Limiting cases
Substitute extreme values (t→0, m→∞, θ→0) to sanity-check your final expression.
JEE Formula Sheet
6+ important formulas for Electrostatics
Subtopics in Electrostatics
- 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
- Potential difference, equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field
- Conductors and insulators, dielectrics and electric polarization
- Capacitors and capacitance, the combination of capacitors in series and parallel
- Capacitance of a parallel plate capacitor with and without dielectric medium between the plates, energy stored in a capacitor
View Electrostatics formula sheet — 6+ JEE formulas
Free sample questions
Attempt 8 free MCQs for Electrostatics. Unlock 151+ more with Pro.
Q2PhysicsUnit 11: Electrostatics
The electric field at a distance from
the centre of a charged conducting spherical shell of radius is . The electric field at a distance 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 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 apart, is (Given mass of the oil drop=
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
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 is kept at a distance
of from a charge of . 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 and
outer radius has a uniform charge
density It has a spherical cavity of radius as shown in the figure. the
electric field at the centre of the cavity is
Want unlimited Electrostatics practice?
Pro unlocks the full question bank, topic filters, and attempt history.
Popular questions in Electrostatics
- When air is replaced by a dielectric medium of force constant \( \mathrm{K} \), the maximum force of attraction between …
- Two equal charges \( q \) are kept fixed at \( a \) and \( +a \) along the \( x \) -axis. A particle of mass \( m \) and…
- The important conclusion given by Millikan's experiment about the charge is…
- Poor conductors of electricity consist of…
- \( n \) capacitors each of capacitance \( 2 \mu F \) are connected in parallel and a potential difference of \( 200 \mat…
- Two isolated metallic solid sphere of radius \( R \) and \( 2 R \) are charged such that both of these have same charge …
Frequently asked questions
Are short tricks enough for Electrostatics in JEE?
No — tricks complement concepts. Master the theory first, then use shortcuts in timed MCQ practice.
Related topics
How to Prepare: Electrostatics
JEE preparation strategy and study plan
Practice: Electrostatics
Online Practice
MCQs: Electrostatics
MCQs
PYQs: Electrostatics
Previous Year Questions
Important: Electrostatics
Important Questions
Mock Test: Electrostatics
Mock Test
Notes: Electrostatics
Notes & Formulas
Formulas: Electrostatics
Formula List
Mistakes: Electrostatics
Common Mistakes
Weightage: Electrostatics
Weightage
Revision: Electrostatics
Revision
Concepts: Electrostatics
Concepts