A spherical conductor of radius `2 m` is charged to a potential of `120 V`. It is now placed inside another hollow spherical conductor of radius `6 m`. Calculate the potential to which the bigger sphere would be raised

A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now placed inside another hollow spherical conductor of radius 6 m. calculate the potential of bigger sphere, if the smaller sphere is made to touch the bigger sphere

The capacitance of spherical conductor of radius 10 m is

The capacity of spherical conductor of radius 10 m is :