The magnet can be completely demagnized by

Breaking the magnet into small pieces

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

Heating it slightly

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

Dropping it into ice cold water

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

A reverse field of appropriate strength

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

Open in App

Solution

The correct option is D A reverse field of appropriate strength
The magnet can be completely demagnetized by reversing field of appropriate strength. This uses a magnetic field generated by a current flowing through solenoid to change the ordering of magnetic dipole. An AC current is used to produce magnetic field of changing direction near magnet. The electromagnetic field caused the magnetic dipoles to switch direction many times. By repeating this process many times as we gradually go to reduce strength of magnetic field, the magnetism of the magnet can be reduced to almost zero -- demagnetized.

Suggest Corrections

Similar questions

Q. The magnet can be completely demagnetized by

Q. Conversion of ice into water and water into ice is an example of change that can be reversed. Give four more examples where you can say that the changes can be reversed.

Q. If a magnet is cut into two, then the magnetic field strength of each magnet is__________ the magnetic field strength of the original magnet.

Question 11

Can we reverse the following changes? If yes, suggest the name of the method.
Water into water vapour
Water vapour into water
Ice into water
Curd into milk

Q. Can we reverse the following change? If yes, suggest the name of the method.
(a) Water into water vapour
(b) Water vapour into water
(c) Ice into water
(d) Curd into milk.

Join BYJU'S Learning Program