Tick the most appropriate answer.
A permanent magnet can be demagnetized by
Write true or false of the following statement.
Permanent magnets get easily demagnetised.
Fill in the blank.
Temporary magnets are usually made up of .................
Name the material of the core of an electromagnet for
State three differences between the temporary and permanent magnets.
Give a reason for the following.
Electromagnets are temporary magnets.
Answer the following in detail.
Distinguish between a temporary magnet and a permanent magnet.
Temporary magnets are made of