`S_1` and `S_2` are two hollow concentric spheres encloing charges Q and 2 Q respectively as shown in Fig
What is the ratio of electric flux through `S_1` and `S_2`?

S_1 and S_2 are two parallel concentric spheres enclosing charges Q and 2Q respectively as 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 hollow concentric spheres encloing charges Q and 2 Q respectively as shown in Fig. How will the electric flux through the spheres S_1 change if a medium of dielectric constant 5 is introduced in the sphere inside S_1 in place of air?

S_1 and S_2 are two parallel concentric spheres enclosing charges Q and 2Q respectively as shown in the figure. How will the electric flux through the sphere S_1 change, if a medium of dielectric constant 5 is introduced in the space inside S_1 in plae at air?

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 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

Two concentric spherical shells S_1 and S_2 enclose charge Q and 2Q as shown in the figure How will the electric flux through the shells S_1 change, if a medium of dielectric constant 10 replaces air in the shell S_1 ?

Two charged spherical conductors of radii R_1 and R_2 when connected by a conducting wire acquire cahrges q_1 and q_2 respectively. Find the ratio of their surface charge ensities in terms of their radii.

A charge q is placed at the centre of a cube of side l . What is the electric flux passing through two opposite faces of the cube?

A thin metallic spherical shell of radius R carries a charge Q on its surface. A point charge Q/2 is placed at its centre C and another charge +2Q outside the shell at a distance r from the centre as shown in figure. Find the electric flux through the shell.