If $q$ is the charge per unit area on the surface of a conductor, then the electric field intensity at a point on the surface is
$\left( {\frac{q}{{{\varepsilon _0}}}} \right)$ normal to surface
$\left( {\frac{q}{{2{\varepsilon _0}}}} \right)$ normal to surface
$\left( {\frac{q}{{{\varepsilon _0}}}} \right)$ tangential to surface
$\left( {\frac{q}{{2{\varepsilon _0}}}} \right)$ tangential to surface
Two metal spheres, one of radus $R$ and the other of radius $2 R$ respectively have the same surface charge density $\sigma$. They are brought in contact and separated. What will be the new surface charge densities on them?
Two concentric spherical shells of radius $R_1$ and $R_2$ have $q_1$ and $q_2$ charge respectively as shown in figure. How much charge will flow through key $k$ when it is closed
An empty thick conducting shell of inner radius $a$ and outer radius $b$ is shown in figure.If it is observed that the inner face of the shell carries a uniform charge density $-\sigma$ and the surface carries a uniform charge density $ '\sigma '$
If the inner surface of the shell is earthed, then identify the correct statement(s)
As shown in the figure, a point charge $Q$ is placed at the centre of conducting spherical shell of inner radius a and outer radius $b$. The electric field due to charge $Q$ in three different regions I, II and III is given by: $( I : r < a , II : a < r < b , III : r > b )$
“Electric field inside hollow region of conductor in uniform electric field is same”. Explain.