Answer to Question #302202 in Electricity and Magnetism for Pankaj

Question

A dielectric object is placed in an electric field. The object becomes polarised and

a large number of atomic/molecular dipoles in the object align in the direction of the applied electric field. Derive an expression for the electric potential due to this polarised dielectric at a point outside the dielectric.

Answer 1

Answer

One method for increasing capacity is to insert between the conductors an insulating material that reduces the voltage because of its effect on the electric field. Such materials are called dielectrics (substances with no free charges).

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Dielectrics, polarization, and electric dipole moment.