Electrostatics

A charge $Q$ is placed at a distance $\frac{a}{2}$ above the centre of a square surface of side length $a$. The electric flux through the square surface due to the charge would be?

Two identical electric point dipoles have dipole have dipole moments$\vec{p}_{1}=p\hat{i}$and$\vec{p}_{2}=-p\hat{i}$and are held on the$x$-axis at distance '$a$'from each other. When released, they move along…

Two ideal electric dipoles $A$ and $B$, having their dipole moment ${p}_{1}$ and ${p}_{2}$ respectively are placed on a plane with their centres at $O$ as shown in the figure. At point $C$ on the axis of dipole $A$, the…

The three charges $\frac{q}{2},q$and $\frac{q}{2}$are placed at the corners $A,D$ and $C$ of a square of side $a$as shown in figure. The magnitude of electric field $\left(E\right)$at the corner $B$ of the square, is

A uniform electric field of $10NC^{-1}$ is created between two parallel charged plates (as shown in figure). An electron enters the field symmetrically between the plates with a kinetic energy $0.5\mathrm{eV}.$ The…

Two point charges $q_{1}\left(\sqrt{10}\mathrm{\mu C}\right)$ and $q_{2}\left(-25\mathrm{\mu C}\right)$ are placed on the $x$ -axis at $x=1m$ and $x=4m$ respectively. The electric field $\left(\text{in}V/m\right)$ at a…

A vertical electric field of magnitude $4.9\times\,10^{5}NC^{-1}$ just prevents a water droplet of a mass $0.1g$ from falling. The value of charge on the droplet will be : (Given $g=9.8ms^{-2}$)

A point charge of $+12\mu\,C$ is at a distance $6\mathrm{cm}$ vertically above the centre of a square of side $12\mathrm{cm}$ as shown in figure. The magnitude of the electric flux through the square will be…

A charge $q$is placed at one corner of a cube as shown in figure. The flux of electrostatic field$\vec{E}$ through the shaded area is:

The electric potential at the centre of two concentric half rings of radii $R_{1}$ and $R_{2}$, having same linear charge density$\lambda\,$ is ?

An electric dipole is placed on $x-$axis in proximity to a line charge of linear charge density $3.0\times\,10^{-6}Cm^{-1}.$Line charge is placed on $z-$axis and positive and negative charge of dipole is at a distance…

Two long currents carrying thin wires, both with current $I$, are held by insulating threads of length L and are in equilibrium as shown in the figure, with threads making an angle ' $\theta\,$ ' with the vertical. If…