18.3 Electric Field - Physics | OpenStax

Explain dielectrics in detail and how an electric field is induced inside a dielectric. - Physics | Shaalaa.com

Our formula for the dielectric sphere can actually serve to describe a metal sphere in a uniform field. To demonstrate this, investigate the limiting case, ϵ→∞, and show that the external field then takes on a form which satisfies the perfect-conductor boundary conditions. What about the internal field? Make a sketch of some field lines for this limiting case. How large is the dipole moment induced in a conducting sphere of radius a, in a field E0 ? What is the radius of a conducting sphere with