Must every magnetic configuration have a north pole and a south pole? What about the field due to a toroid?

(a) What happens if a bar magnet is cut into two pieces (i) transverse to its length (ii) along its length? (b) What happens if an iron bar magnet is melted? Does it retain its magnetism? (c) A magnetised needle in a uniform magnetic field experiences a torque but no net force. However, an iron nail near a bar magnet experiences a force of attration in addition to a torque, explain. (d) Must every magnetic field configuration have a north pole and a south pole? What about the field due to a toroid? (e) Can you think of magnetic field configuration with three poles? (f) Two identical looking iron bars A and B are given, one of which is definitely known to be magnetised. How would one ascertain whether or not both are magnetised? If only one is magnetised how does one ascertain which one? Use nothing else but the bars A and B.

A: Every magnetic configuration magnetic field north pole and south pole. R: North pole, south pole exists only if the source of the field has net magnetic dipole moment.

How do you find the north pole and south pole of a magnet?

Distinguish between North pole and south pole of a magnet

Can we have a single north pole, or a single south pole?

Assertion: We cannot think of magnetic field configuration with three poles. Reason: A bar magnet does exert a torque on itself due to its own field.

What are magnetic poles?

Assertion (A): It is not necessary that every magnet has one north pole and one south pole. Reason (R ): It is a basic fact that magnetic poles occur in pairs

The magnetic south pole of the earth is near the

If you break a magnet into 6 pieces, how many north and how many south poles would there be in all?