1

WB JEE 2021

MCQ (Single Correct Answer)

+1

-0.25

Two point charges +q

_{1}and +q_{2}are placed a finite distance d apart. It is desired to put a third charge q_{3}in between these two charges, so that q_{3}is in equilibrium. This is2

WB JEE 2020

MCQ (Single Correct Answer)

+1

-0.25

As shown in the figure, a point charge q

In that case, which of the following graph(s) shows most correctly the electric field vector in E

_{1}= + 1 $$ \times $$ 10^{-6}C is placed at the origin in xy-plane and another point charge q_{2}= + 3 $$ \times $$ 10^{-6}C is placed at the coordinate (10, 0).In that case, which of the following graph(s) shows most correctly the electric field vector in E

_{x}in x-direction?3

WB JEE 2020

MCQ (Single Correct Answer)

+1

-0.25

Four identical point masses, each of mass m and carrying charge + q are placed at the corners of a square of sides a on a frictionless plane surface. If the particles are released simultaneously, the kinetic energy of the system when they are infinitely far apart is

4

WB JEE 2020

MCQ (Single Correct Answer)

+1

-0.25

A very long charged solid cylinder of radius a contains a uniform charge density p. Dielectric constant of the material of the cylinder is K. What will be the magnitude of electric field at a radial distance x (x < a) from the axis of the cylinder?

Questions Asked from Electrostatics (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

WB JEE Subjects

Physics

Mechanics

Units & Measurements Vector Algebra Motion Laws of Motion Circular Motion Work Power & Energy Center of Mass Rotational Motion Properties of Matter Heat and Thermodynamics Simple Harmonic Motion Waves Gravitation

Electricity

Electrostatics Current Electricity Capacitor Magnetism Electromagnetic Induction Alternating Current Electromagnetic Waves

Optics

Modern Physics

Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Atomic Structure Redox Reaction Gaseous State Chemical Equilibrium Liquid Solution Ionic Equilibrium Thermodynamics Chemical Kinetics Radioactivity and Nuclear Chemistry Electrochemistry Solid State Surface Chemistry

Inorganic Chemistry

Periodic Table Chemical Bonding Metallurgy Hydrogen and It's Compounds Some s Block Elements Some P Block Elements d and f Block Elements Coordination Compounds

Organic Chemistry

Mathematics

Algebra

Sets and Relations Logarithms Sequence and Series Quadratic Equations Permutations and Combinations Mathematical Induction Binomial Theorem Matrices and Determinants Vector Algebra Three Dimensional Geometry Probability Complex Numbers Statistics

Trigonometry

Coordinate Geometry

Calculus