Question

Two spherical conductors A and B of radii 1 mm and 2 mm are separated by a distance of 5 cm and are uniformly charged. If the spheres are connected by a conducting wire then in equilibrium condition, the ratio of the magnitude of the electric fields at the surface of spheres A and B is

(a) 1 : 4 

(b) 4 : 1

(c) 1 : 2 

(d) 2 : 1.

Answer 1

Correct Option (d) 2 : 1.

Explanation:

When the two conducting spheres are connected by a conducting wire, charge will flow from one sphere (having higher potential) to other (having lower potential) till both acquire the same potential.

Therefore,