A conducting sphere of radius 10 cm is kept in a medium of dielectric constant 8. Its capacitance is

A charged of 8xx10^(-6)C is given to a metallic sphere of radius 5 cm placed in a medium of dielectric constant 5. The surface charge density of sphere is

The ratio of the force between two small conducting spheres of equal charge in (a) a medium of dielectric constant 2, and (b) air is respectively

A long cylinder of radius 2 cm carrying a charge of 5 mu C/m is kept in a medium of dielectric constant 10. Find the electric field intensity at a point situated at a distance 1m from the axis of cylinder.

The electric field intensity at a point near a sphere of radius r and surface density of rho in a medium of dielectric constant K is

A spherical capacitor has an inner sphere of radius 12cm and n outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5muC . The space between the concentric spheres is filled with a liquid of dielectric constant 32. Determine the capacitance of the capacitor

A spherical capacitor has an inner sphere of radius 12 cm and an outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5 muC . The space between the concentric spheres is filled with a liquid of dielectric constant 32. Determine the capacitance of the capacitor.

A spherical capacitor has an inner sphere of radius 12cm and n outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5muC . The space between the concentric spheres is filled with a liquid of dielectric constant 32. Compare the capacitance of this capacitor with that of an isolated sphere of radius 12 cm. Explain why the latter is much smaller

A spherical capacitor has an inner sphere of radius 12 cm and an outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5 muC . The space between the concentric spheres is filled with a liquid of dielectric constant 32. Compare the capacitance of this capacitor with that of an isolated sphere of radius 12 cm. Explain why the latter is much smaller.

Radius of a spherical conductor is 2m , This is kept in dielectric medium of dielectric constant 10^6N//C . Find a. capacitance of the conductor b. maximum charge which can be stored on this conductor.