Question

How can we determine northa and south pole of an electromagnet with the help of magnetised iron bar.

Answer 1

By suspending magnetised bar and identify its north and south poles.

(ii) By finding the polarity of electromagnet using the property -like poles repel.



HOPE IT HEPLS

Answer 2

An electromagnet is a temporary magnet made by passing current in a coil wound around a piece of soft iron.
if we bring the north pole of the magnet towards the pole of the electromagnet and there is a repulsion then it is a north pole and if we take the north pole of the iron bar towards the other end of electromagnet and it attracts it then it is a south pole of electromagnet. Then taking the south pole of magnetised iron bar follow the above steps