Question

What are polar dielectrics and non-polar dielectrics?

Hint:

Polar dielectrics align naturally in fields; non-polar ones rely on induced dipoles.

Answer 1

Polar Dielectrics: These are materials with molecules that have a permanent electric dipole moment due to an asymmetric charge distribution (e.g., water, HCl). In the absence of an electric field, dipoles are randomly oriented, but they align partially in an external field, enhancing polarization.
Non-Polar Dielectrics: These are materials with molecules that have no permanent dipole moment, as charges are symmetrically distributed (e.g., O\(_2\), benzene). Polarization occurs only in an external electric field due to induced dipoles from charge displacement.
Answer: Polar dielectrics have permanent dipole moments; non-polar dielectrics have no permanent dipoles but can be polarized by an external field.