Electrostatics Questions

Two charges, each equal to q, are kept at x = - a and x = a on the x-axis. A particle of mass m and charge is placed at the origin. If charge q0 is given a small displacement (y...

A, B and C are three points in a uniform electric field. The electric potential is :-...

The figure shows an experimental plot fordischarging of a capacitor in an R-C circuit.The time constant of this circuit lies between:-...

A uniformly charged thin spherical shell of radius R carries uniform surface charge density of σ per unit area. It is made of two hemispherical shells, held together by pressing them with force ...

Assume that an electric field exists in space. Then the potential difference VA - VO′ where VO is the potential at the origin and VA the potential at x = 2 m is...

Charges Q, 2Q and 4Q are uniformly distributed in three dielectric solid spheres 1, 2 and 3 of radii R/2, R and 2R respectively, as shown in figure. If magnitudes of the electric fields at point P at ...

A conducting sphere of radius R is given a charge Q. The electric potential and the electric field at the centre of the sphere respectively are

In a region, the potential is represented by V(x, y, z) = 6x - 8xy - 8y + 6yz, where V is in volts and x, y, z are in metres. The electric force experienced by a charge of 2 coulomb situated at point ...

Two point charges of + 2 μC and + 6μC repel each other with a force of 12 N. If each is given an additional charge of - 4 μC, then force will become : -...

Two identical small spheres carry charge of Q1 and Q2 with Q1>>Q2. The charges are d distance apart. The force they exert on one another is F1. The spheres are made to touch one another and then...

The electric field in a certain region is acting radially outward and is given by E = Ar. A charge contained in a shepere of radius ′a′ centred at the origin of the field, will be given by...

A flat circular fixed disc has a charge +Q uniformly distributed on the disc. A charge +q is thrown with kinetic energy K, towards the disc along its axis. The charge q :...

An EM wave from air enters a medium. The electric fields are E→1=E01x^cos2πνzc-t in air and E→1=E01x^cosk2z-ct in medium, where the wave number k and frequency v refer to their values in a...

An electron falls from rest through a vertical distance h in a uniform and vertically upward directed electric field E. The direction of electrical field is now reversed, keeping its magnitude the sam...

An electron of mass m with an initial velocity V→=V0i^(V0>0) enters an electric field E→=-E0i^ (E0 = constant >0) at t = 0. If λ0 is its de-Broglie wavelength initially, then i...

The electric field E is measured at a point P(0,0,d) generated due to various charge distributions and the dependence of E on d is found to be different for different charge distributions. List-I cont...

Two non-conducting solid spheres of radii R and 2R, having uniform volume charge densities ρ1 and ρ2 respectively, touch each other. The net electric field at a distance 2R from the centre o...

Two non-conducting spheres of radii R1 and R2 and carrying uniform volume charge densities +ρ and -ρ, respectively, are placed such that they partially overlap, as shown in the figure. At all ...

An elliptical cavity is carved within a perfect conductor. A positive charge q is placed at the centre of the cavity. The points A and B are on the cavity surface as shown in the figure. Then...

Let E1(r), E2(r) and E3(r) be the respective electric fields at a distance r from a point charge Q, an infinitely long wire with constant linear charge density λ, and an infinite plane with unifo...