Question

Polarization is defined as the dipole moment __________

(a) per unit length

(b) per unit area

(c) per unit volume

(d) per unit time

This question was posed to me by my college professor while I was bunking the class.

I'd like to ask this question from Dielectric Polarisation in portion Dielectrics of Engineering Physics II

Answer 1

The correct option is (c) per unit volume

For explanation: When a dipole is placed in an electric field, the positive charges appear near the negative electrode and negative charges near the positive electrode. This phenomenon is called polarization which is defined as Dipole moment per unit volume.