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Home » A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because ________.
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because ________.
CBSE | Chemistry | Class 12 | Exercise 1 | NCERT Exemplar | Solid State
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because ________.

(i) all the domains get oriented in the direction of the magnetic field.

(ii) all the domains get oriented in the direction opposite to the direction of the magnetic field.

(iii) domains get oriented randomly.

(iv) domains are not affected by the magnetic field.

 

 

Correct Answer: (i) all the domains get oriented in the direction of the magnetic field

Explanation: The substances in which the magnetic fields of each atom are aligned and point in the same direction is called as the ferromagnetic substances. These materials are very powerful when they are placed in an external magnetic field. Therefore, only heavy ferromagnets can be used to make permanent magnets.

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