(a) Compare the individual dipole moment and the specimen dipole moment for water molecule and oxygen molecule when placed in
(i) Absence of external electric field.
(ii) Presence of external electric field. Justify your answer.
(b) Given two parallel conducting plates of area A and charge densities + a and - a. A dielectric slab of constant K and a conducting slab of thickness d each are inserted in between them as shown.
(i) Find the potential difference between the plates.
(ii) Plot E versus x graph, taking x = 0 at positive plate and x = 5d at negative plate.
