Equal charges are given to two spheres of different radii. The potential will

A total charge of Q is distributed over two concentric hollow spheres of radii r and R (R gt r) such that the surface charge densities on the two spheres are equal. The electric potential at the common centre is :

Concentric metallic hollow spheres of radii R and 4R hold charges Q_1 and Q_2 respectively. Given that surface charge densities of the concentric spheres are equal, the potential difference V(R)- V(4R) is :

Concentric metallic hollow spheres of radii R and 4R hold charges Q_1 and Q_2 respectively. Given that surface charge densities of the concentric spheres are equal, the potential difference V(R)- V(4R) is :

Two identical sphres, one positively charged and the other negativily charged are held d cm apart.If the magnitude of the charges on the two spheres are equal , find the electric potential at a point midway on the line joining the centres of the two spheres.

The radii of two metallic spheres are 5 cm and 10 cm and both carry equal charge of 75 mu C . If the two spheres are shorted then charge will be transferred-

The radii of two metallic spheres are 5 cm and 10 cm and both carry equal charge of 75 mu C . If the two spheres are shorted then charge will be transferred-

Two spheres or different radii are given equal amount of charge. The electric potential will be ...... .