Question 73: Magnetism and Matter

Question

A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains :

Accepted Answer

Atoms of ferromagnetic material in unmagnetised state form domains inside the ferromagnetic material. These domains have large magnetic moment of atoms. In the absence of magnetic field, these domains have magnetic moment in different directions. But when the magnetic field is applied, domains aligned in the direction of the field grow in size and those aligned in the direction opposite to the field reduce in size and also its orientation changes.

Answer

may increase or decrease in size and change its orientation.

Answer

increase in size but no change in orientation.

Answer

decrease in size and changes orientation.

Answer

have no relation with external magnetic field.

Magnetism and Matter

A soft ferromagnetic material is placed in an external magnetic field. The magnetic domains :

Choose the correct answer: