Question

Explain single-touch method to magnetize an iron pin.

Answer 1

In the single-touch method, the iron pin (shown as bar in the diagram) to be magnetised is kept on a table. A strong bar magnet, vertically touching one end of the pin with one of its pole, is moved along the iron pin to its other end. The bar magnet is then raised and brought back to the initial point. This process is repeated for thirty to forty times, always moving the magnet in the same direction. Then, the bar magnet is turned upside down and the process is repeated again. After completion, we will find the iron pin magnetised.