Question

How can you make it into magnet

Answer 1

The easiest way of making a magnet is by the stroking method. If we stroke an iron bar with one end (one pole) of a bar magnet repeatedly in the same direction, the iron bar becomes a magnet. Thus, we need two things to make a magnet: an iron bar (or an iron strip) and a bar magnet.

Activity

Take an iron bar (or an iron strip) which is to be made a magnet and keep it on a wooden table. Also take a bar magnet. Hold one end of the bar magnet in your hand and keep the other end of bar magnet at one end of the iron bar. Without lifting, move the lower end

of bar magnet along the whole length of iron bar till you reach its other end. After reaching end , lift the bar magnet and bring its same end again at the starting end of the iron bar. Move the bar magnet again along the whole length of iron bar in the same direction.

Repeat this process of stroking the iron bar with the same end of bar magnet in the same direction about 30 to 40 times. The iron bar will then become a magnet.

The magnetic pole produced in iron bar at that end ‘where the stroke ends’ is always opposite of the stroking pole of the bar magnet.

We can even convert an iron nail, a sewing needle or even a razor blade into a magnet by stroking them repeatedly with the same end of a bar magnet in the same direction.If we convert an iron (or steel) needle into a magnet, then we can use this ‘magnetised needle’, for making our own compass.