Two charged metal spheres of radii R and 2R are temporarily placed in contact and then separated. At the surface of each, the ratio of electric field will be -

Two charged metallic spheres of radii r_(1) and r_(2) are touched and separated. Calculated the ration of their (i) Charges (ii) Potential (ii) Self energy (iv) Electric field at the surface (v) Surface cahrge density

Two isolated charged conducting spheres of radii a and b produce the same electric field near their surface. The ratio of electric potentials on their surfaces is

Two conducting spheres of radii r_(1) and r_(2) are charged to the same surface charge density . The ratio of electric field near their surface is

two metal spheres of radii R_(1) and R_(2) are charged to the same potential. The ratio of charges on the spheres is

Two charged spheres of radii R_(1) and R_(2) having equal surface charge density. The ratio of their potential is

Two isolated metallic spheres of radii 2 cm and 4 cm are given equal charge, then the ratio of charge density on the surfaces of the spheres will be

Two metallic spheres of radii R and 2 R are charged so that both of these have same surface charge density, sigma . If they are connected to each other with a conducting wire, in which direction will the charge flow and why ?