Question

A piece of iron is magnetized by sliding a bar magnet over it, as shown in the figure.


Which part of the iron piece will become the north pole?

• A. W
• B. X
• C. Y
• D. Z

Answer 1

The correct option is A W

In the rubbing method, the end of the iron piece from where the process starts, develops the same polarity as the polarity of the storing magnet.
Here, the north pole of the magnet is being repeatedly slided over the iron piece, and this process is beginning at end ‘W’ and ending at end ’Z’.
Hence, the end ’W’ will become the north pole.