A sphere `S_(1)` of radius `r_(1)` encloses a total charge Q. If there is another concentric sphere `S_(2)` of radius `r_(2) (gt r_(1))` and there be no additional charges between `S_(1) and S_(2)` find the ration of electric flux through `S_(1) and S_(2)`,

A sphere S_1 of radius r_1 encloses a charge Q. If there is another concentric sphere S_2 of the radius r_2(r_2>r_1) and there be no additional charges between S_1 and S_2 find the ratio of electric flux through S_1 and S_2

A sphere of radius r, encloses a net charge Q. If there is another concentric sphere S_(2) of radius r_(2)(r_(2)gtr_(1)) enclosing charge 20, find the ratio of the electric flux through S_(1) and S_(2) . How will the electric flux through sphere S_(1) change, if a medium of dielectric constant k is introduced in the space inside S_(2) in place of air?

S_(1) and S_(2) are two parallel concentric spheres enclosing charges Q and 2Q shown in the figure. What is the ratio of the electric flux through S_(1) and S_(2) ?

S_(1) and S_(2) are two concentric sphere enclosing charges 2Q and 3Q respectively as shown in the figure. What is the ratio of the electric flux through S_(1) and S_(2) ?

Consider two hollow concentric spheres S_(1) and S_(2) enclosing charges 2Q and 4Q respectively as shown in figure. (i) Find out the ratio of the electric flux through them.

Two concentric spherical shells S_1 and S_2 enclose charge Q and 2Q as shown in the figure If air is inside the tow shells, what is the ratio of electric flux through S_1 and S_2 ?

A conducting sphere S_(1) of radius r_(1) is connected by a conducting wire to another conducting sphere S_(2) of radius r_(2) , where r_(1) = 3 cm and r_(2) = 2 cm. Before they are connected, S_(1) carries charge of 10 units. The electric potential at the point which is at a distance 4 cm from the centre of S_(1) and a distance 3 cm from the centre of S_(2) is