Question

Polar molecules have permanent dipole moments even in the absence of an electric field.

(a) False

(b) True

I got this question in an interview for job.

I need to ask this question from Properties of Dielectric Materials topic in portion Dielectrics of Engineering Physics II

Answer 1

Right choice is (b) True

Best explanation: In the absence of an electric field the polar molecules posses some dipole moment. These dipoles are randomly arranged and they cancel each other. Hence the net dipole moment is very less.