Question

explain how can u magnetise an iron needle using the single torch method​

Answer 1

Answer:

Determine the poles on your magnet. On most magnets, this should be shown with an N on one end and an S on the other.

Decide which pole you want to use to create your magnet. This is purely preference and will not affect the strength of your magnet.

Position the magnet against the iron rod so that only the chosen pole is touching the rod.

Begin at one end of the rod and rub the magnet down the length of the rod in one continuous movement.

Continue stroking the rod with the magnet until the rod has the desired magnetic strength. You may want to periodically test the magnet, as there is no specific number of strokes to use.