Question

A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because ________.

• A. domains are not affected by magnetic fields.
• B. all the domains get oriented in the direction of magnetic field.
• C. all the domains get oriented in the direction opposite to the direction of magnetic field.
• D. domains get oriented randomly.

Answer 1

The correct option is B all the domains get oriented in the direction of magnetic field.

$\text{Ferromagnetic substance}$

A ferromagnetic substance becomes a permanent magnet when placed in a magnetic field as the domains get aligned in the direction of an applied external magnetic field.