A metal sphere is held fixed on a smooth horizontal insulated plane and another metal sphere is placed some distacne away. If the fixed sphere is given a charge how will the other sphere react ?

When a hollow metallic sphere is heated, the volume of the cavity inside that sphere

Two metal spheres, each of mass I g and radius 5 mm, are placed on a smooth horizontal insulated surface. The separation between their centres is 15 cm. Now , one sphere is charged to a potential of 500 V and the other to 1000 V. What are the velocities of the balls when the distance between their centres becomes 30 cm due to repulsion?

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. 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

The metallic spheres of radii 6 cm, 8 cm and 10 cm are melted to form a single sphere, the diameter of the sphere is____