Question

Explain magnetisation. Illustrate the way by which a piece of iron bar can be magnetised.

Answer 1

Magnetisation is the process of creating an artificial magnet with the help of a magnet.
Steps involved in magnetising an iron strip are:
(i) Take an iron strip which is to be magnetised.
(ii) Keep it on a wooden table.
(iii) Hold one end of the bar magnet with your hand and keep the other end of the bar magnet near the edge of the iron strip.
(iv) Without lifting, move it along the length of iron strip till you reach the other edge.
(v) After reaching the end of the iron strip, lift the bar magnet and bring it to the same position and repeat the process again and again.
After repeating this process for 30-40 times the iron piece turns into a temporary magnet.