The capacitance of an isolated spherical conductor of radius R in vacuum is

With three 6 μF capacitors, which of the capacitance values are available to you ?

A capacitor of plate separation 0.02 mm is completely filled with a dielectric material of strength 20 kV/mm. The maximum voltage rating of the capacitor is

The energy stored in a charged capacitor is U. The capacitor is isolated and connected across the terminals of an identical uncharged capacitor. The energy stored in each capacitor is

An uncharged parallel-plate capacitor filled with a material of dielectric constant k is connected to a parallel-plate air capacitor of identical geometry charged to a potential V. At equilibrium, common potential difference across them is V’. The dielectric constant k is equal to

A charged spherical conductor in a medium of permittivity $\epsilon \backslash varepsilon$ basa surface charge density $\sigma \backslash sigma$. At an outside point, a distance r from the centre of the conductor, the electric field intensity is

The electric field intensity in free space at a distance r outside a charged conducting sphere of radius R, in terms of its surface charge density e is

A dielectric of relative permittivity k completely fills the space between the plates of a parallel plate capacitor. When the surface charge density on the plates is $\sigma \backslash sigma$, the polarization of the dielectric is

A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will

Dielectric constant for a metal is