Question

What is polar dielectrics?

Answer 1

1.  A dielectric molecule in which the centre of mass of positive charges (protons) does not coincide with the centre of mass of negative charges (electrons) because the asymmetric shape of the molecules is called a polar dielectric.
2. Representation:
   
3. They have permanent dipole moments of the order of 10^–30 cm. They act as tiny electric dipoles, as the charges are separated by a small distance.
4. Examples: HCl, water, alcohol, NH₃ etc.