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.

Two insulated spherical conductors of radii 5.0 cm and 10.0 cm are charged to potentials of 600 V and 300 V respectively. Calculate the total energy of the system.

A spherical conducting shell of inner radius r_1 and outer radius r_2 has a charge Q as shown in the figure. A charge q is placed at the centre of the shell. What is the surface charge density of the inner and outer sufaces of the shell?

A spherical conducting shell of inner radius r_1 and outer radius r_2 has a charge Q. A charge q is placed at the centre of the shell. What is the surface charge density on the inner and outer surfaces of the shell?

Two charged conducting spheres A and B having radii a and b connected to each other by a copper wire. Find the ratio of the electric fields at the surfaces of the two spheres.

Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explkain why charge density on the sharp and pointed ends of a conductor is higher than on its flattened portions?

Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explain why charge density on the sharp and pointed ends of a conductor is higher than on its flatter portions.

Two copper shperes of radii r_1 and r_2 having charges q_1 and q_2 are connected by means of a wire. What is the electrical condition that no charge flows between them?

Fill ups A point charge is placed at the centre of a hollow conducting sphere of internal radius 'r' and outer radius '2r'. The ratio of the surface charge density of the inner surface to that the outer surface will be…………….. .

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 ?

Two point charges of magnitude +q and -q are placed at (-d/2, 0, 0) and (d/2, 0, 0) respectively. Find the equation of the equipotential surface where the potential is zero.