In figure $+Q$ charge is located at one of the edge of the cube, then electric flux through cube due to $+Q$ charge is
$\frac{{ + Q}}{{{ \in _0}}}$
$\frac{{ + Q}}{{{ 2\in _0}}}$
$\frac{{ + Q}}{{{4 \in _0}}}$
$\frac{{ + Q}}{{{8 \in _0}}}$
A linear charge having linear charge density $\lambda$ , penetrates a cube diagonally and then it penetrate a sphere diametrically as shown. What will be the ratio of flux coming cut of cube and sphere
$q_1, q_2, q_3$ and $q_4$ are point charges located at point as shown in the figure and $S$ is a spherical Gaussian surface of radius $R$. Which of the following is true according to the Gauss's law
A charge $q$ is placed at the centre of the open end of cylindrical vessel. The flux of the electric field through the surface of the vessel is
$(a)$ An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
$(b)$ Explain why two field lines never cross each other at any point?
Two infinite plane parallel sheets separated by a distance $d$ have equal and opposite uniform charge densities $\sigma $. Electric field at a point between the sheets is