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

all the domains get oriented in the direction of magnetic field

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

all the domains get oriented in the direction opposite to the direction of magnetic field

No worries! We‘ve got your back. Try BYJU‘S free classes today!

domains get oriented randomly

No worries! We‘ve got your back. Try BYJU‘S free classes today!

domains are not affected by magnetic field

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

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

A ferromagnetic substance is a substance in which the magnetic moments of the individual atoms are aligned and point in the same direction. These substances are strongly magnetized when placed in an external magnetic field. Hence, only hard ferromagnets can be used to make permanent magnets.

Hence, option "A" is the correct answer.

Suggest Corrections

Similar questions

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

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

(b) all the domains get oriented in the direction opposite to the direction of a magnetic field

(d) domains are not affected by a magnetic field

The value of magnetic moment is zero in the case of antiferromagnetic substances because the domains ...........

(a) get oriented in the direction of the applied magnetic fiels

(b) get oriented opposite to the direction of the applied magnetic fiels

(d) cancel out each other's magnetic moment

Which of the following statements are correct ?

(a) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic

(b) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic

(c) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other

(d) In ferromagnetic substances, all the domains get oriented in the direction of magnetic filed and remain as such even after removing magnetic field

Which of the following statements is not true?

(a) Paramagnetic substances are weakly attracted by magnetic field

(b) Ferromagnetic substances cannot be magnetised permanently

(d) Pairing of electrons cancels their magnetic moment in the diamagnetic substances

Q. In the unmagnetized state, magnetic domains of a magnetic substance are oriented at :

Join BYJU'S Learning Program