The total dipole moment of dielectric with polar molecules in absence of an external electric field is

Question

The total dipole moment of dielectric with polar molecules in absence of an external electric field is (A) zero (B) negative (C) infinite (D) None of these

Tardigrade Admin · Accepted Answer

In the absence of any external field, the different permanent dipoles are oriented randomly due to thermal agitation; so the total dipole moment is zero. When an external field is applied, the individual dipole moment tends to align with the field.

Q. The total dipole moment of dielectric with polar molecules in absence of an external electric field is

zero

negative

infinite

None of these

In the absence of any external field, the different permanent dipoles are oriented randomly due to thermal agitation; so the total dipole moment is zero. When an external field is applied, the individual dipole moment tends to align with the field.