The electric field near a conducting surface having a uniform surface charge density $\sigma $ is given by
$\frac{\sigma }{{{\varepsilon _0}}}$ and is parallel to the surface
$\frac{{2\sigma }}{{{\varepsilon _0}}}$ and is parallel to the surface
$\frac{\sigma }{{{\varepsilon _0}}}$ and is normal to the surface
$\frac{{2\sigma }}{{{\varepsilon _0}}}$ and is normal to the surface
Can a metal be used as a medium for dielectric
The dielectric strength of air at $NTP$ is $3 \times {10^6}\,V/m$ then the maximum charge that can be given to a spherical conductor of radius $3\, m$ is
Three concentric metallic spherical shells of radii $R, 2R, 3R$, are given charges $Q_1, Q_2, Q_3$, respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. Then, the ratio of the charges given to the shells, $Q_1 : Q_2 : Q_3$ is
‘Inside a conductor electrostatic field is zero’. Explain.
A hollow closed conductor of irregular shape is given some charge. Which of the following statements are correct ?