Discuss relative strengths of electrical and magnetic forces?

Give the magnitude and direction of the net force acting on:- a high-speed electron in space far from all material objects, and free of electric and magnetic fields.

Discuss Oersted's experiment to establish that magnetic field is produced due to current in a wire.

What is the strength of the electric field inside a charged spherical shell?

Discuss the polarisation of dielectric slab placed in an electric field. What happens to the applied electric field?