# Electrostatics · Physics · WB JEE

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WB JEE 2008
4 point charges each +q is placed on the circumference of a circle of diameter 2d in such a way that they form a square. The potential at the centre i...
WB JEE 2008
64 identical spheres of charge q and capacitance C each are combined to form a large sphere. The charge and capacitance of the large sphere is
WB JEE 2023
Consider a positively charged infinite cylinder with uniform volume charge density $$\rho > 0$$. An electric dipole consisting of + Q and $$-$$ Q ...
WB JEE 2023
A thin glass rod is bent in a semicircle of radius R. A charge is non-uniformly distributed along the rod with a linear charge density $$\lambda=\lam... WB JEE 2023 The figure represents two equipotential lines in x-y plane for an electric field. The x-component E$$_x$$of the electric field in space between thes... WB JEE 2023 An electric dipole of dipole moment$$\vec{p}$$is placed at the origin of the co-ordinate system along the$$\mathrm{z}$$-axis. The amount of work re... WB JEE 2022 The electric potential for an electric field directed parallel to X-axis is shown in the figure. Choose the correct plot of electric field strength. ... WB JEE 2022 Two charges, each equal to$$-$$q are kept at ($$-$$a, 0) and (a, 0). A charge q is placed at the origin. If q is given a small displacement along y d... WB JEE 2022 A neutral conducting solid sphere of radius R has two spherical cavities of radius a and b as shown in the figure. Centre to centre distance between ... WB JEE 2022 Consider two concentric conducting sphere of radii R and 2R respectively. The inner sphere is given a charge +Q. The other sphere is grounded. The pot... WB JEE 2021 The variation of electric field along the Z-axis due to a uniformly charged circular ring of radius a in XY-plane as shown in the figure. The value of... WB JEE 2021 A metal sphere of radius R carrying charge q is surrounded by a thick concentric metal shell of inner and outer radii a and b, respectively. The net c... WB JEE 2021 Three infinite plane sheets carrying uniform charge densities$$-\sigma$$, 2$$\sigma$$, 4$$\sigma$$are placed parallel to XZ-plane at Y = a, 3a,... WB JEE 2021 Two point charges +q1 and +q2 are placed a finite distance d apart. It is desired to put a third charge q3 in between these two charges, so that q3 is... WB JEE 2020 As shown in the figure, a point charge q1 = + 1$$ \times $$10-6 C is placed at the origin in xy-plane and another point charge q2 = + 3$$ \times $$... WB JEE 2020 Four identical point masses, each of mass m and carrying charge + q are placed at the corners of a square of sides a on a frictionless plane surface. ... WB JEE 2020 A very long charged solid cylinder of radius a contains a uniform charge density p. Dielectric constant of the material of the cylinder is K. What wil... WB JEE 2020 Two pith balls, each carrying charge + q are hung from a hook by two springs. It is found that when each charge is tripled, angle between the strings ... WB JEE 2019 Eleven equal point charges, all of them having a charge +Q, are placed at all the hour positions of a circular clock of radius r, except at the 10 h p... WB JEE 2019 A negative charge is placed at the midpoint between two fixed equal positive charges, separated by a distance 2d. If the negative charge is given a sm... WB JEE 2018 A point charge$$- q is carried from a point A to another point B on the axis of a charged ring of radius r carrying a charge + q. If the point A is...
WB JEE 2018
Consider a region in free space bounded by the surfaces of an imaginary cube having sides of length a as shown in the figure. A charge + Q is placed a...
WB JEE 2018
Four equal charges of value + Q are placed at any four vertices of a regular hexagon of side 'a'. By suitably choosing the vertices, what can be maxim...
WB JEE 2018
The bob of a pendulum of mass m, suspended by an inextensible string of length L as shown in the figure carries a small charge q. An infinite horizont...
WB JEE 2017
A positive charge Q is situated at the centre of a cube. The electric flux through any face of the cube is (in SI units)
WB JEE 2017
A charge of 0.8 coulomb is divided into two charges Q1 and Q2. These are kept at a separation of 30 cm. The force on Q1 is maximum when...
WB JEE 2017
A particle with charge Q coulomb, tied at the end of an inextensible string of length R metre, revolves in a vertical plane. At the centre of the circ...
WB JEE 2017
A unit negative charge with mass M resides at the mid-point of the straight line of length 2a adjoining two fixed charges of magnitude +Q each. If it ...

## MCQ (More than One Correct Answer)

WB JEE 2018
Two positive charges Q and 4Q are placed at points A and B respectively, where B is at a distance d units to the right of A. The total electric potent...
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