List of top Physics Questions on Electric Field asked in JEE Main

A cube of side 'a' has point charges \(+ Q\) located at each of its vertices except at the origin where the charge is \(-Q\). The electric field at the centre of cube is:

Two point charges $q_1( \sqrt{10} \mu C)$ and $q_2(-25 \; \mu C)$ are placed on the x-axis at $x = 1 m$ and $x = 4 m$ respectively. The electric field (in V/m) at a point $y = 3 m$ on y-axis is, $\left[\text{take} \frac{1}{4\pi\varepsilon_{0}} = 9\times10^{9} Nm^{2} C^{-2}\right] $

Two balls of same mass and carrying equal charge are hung from a fixed support of length $l$. At electrostatic equilibrium, assuming that angles made by each thread is small, the separation, $x$ between the balls is proportional to :

Figure shows two charges q₁ and –q₂ placed on the x-axis as shown. If electric field at p is along x-direction, find \(\frac{q_1}{q_2}\)

Let $\sigma$ be the uniform surface charge density of two infinite thin plane sheets shown in figure Then the electric fields in three different region $E_I, E_{I I}$ and $E_{I I I}$ are: