Mention applications of Gauss’s law.
The applications of Gauss's law are as below :
$(1)$ To obtain field due to an infinitely long straight uniformly charged wire.
$(2)$ To obtain field due to uniformly charged infinite plane sheet.
$(3)$ To obtain field due to uniformly charged thin spherical shell.
$(4)$ To obtain field due to uniformly charged sphere.
Charges $Q, 2Q$ and $4Q$ are uniformly distributed in three dielectric solid spheres $1,2$ and $3$ of radii $R/2, R$ and $2 R$ respectively, as shown in figure. If magnitudes of the electric fields at point $P$ at a distance $R$ from the centre of spheres $1,2$ and $3$ are $E_1 E_2$ and $E_3$ respectively, then
Two non-conducting solid spheres of radii $R$ and $2 \ R$, having uniform volume charge densities $\rho_1$ and $\rho_2$ respectively, touch each other. The net electric field at a distance $2 \ R$ from the centre of the smaller sphere, along the line joining the centres of the spheres, is zero. The ratio $\frac{\rho_1}{\rho_2}$ can be ;
$(A)$ $-4$ $(B)$ $-\frac{32}{25}$ $(C)$ $\frac{32}{25}$ $(D)$ $4$
Obtain the expression of electric field at any point by continuous distribution of charge on a $(i)$ line $(ii)$ surface $(iii)$ volume.
A long charged cylinder of linear charged density $\lambda$ is surrounded by a hollow co-axial conducting cylinder. What is the electric field in the space between the two cylinders?
Obtain the expression of electric field by a straight wire of infinite length and with linear charge density $'\lambda '$.