A cylindrical capacitor has two coaxial cylinders of length 15cm and radii 1.5 cm and 1.4 cm. The outer cylinder is earthed and the inner cylinder is given a charge of `3.5muC`, Determine the capacitance of the system and the potential of the inner cylinder. Neglect end effects (i.e., bending of field lines at the ends).

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 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. What is the the potential of the inner sphere?

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

Two solid cylinders of radii 4 cm and 5 cm and length 6 cm and 4 cm respectively are recast into cylindrical dise of thickness 1 cm. The radius of the disc is___

A metallic cylinder of diameter 5cm. And height 3(1)/(3) cm is melted and cast into a sphere. What is its diameter.

How many coins of diameter 1.5 cm and of thickness 0.2 cm can be made by melting a metal right circular cylinder of diameter 4.5 cm and height 10 cm ?