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

Poles of a magnet

Distinguish between North pole and south pole of a magnet

If a diamagnetic substance is brought near north or south pole of a bar magnet, it is

If a diamagnetic substance is brought near north or south pole of a bar magnet, it is

(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.

Three identical bar magnets are rivetted together at centre in the same place as shown in figure. This system is placed at rest in a slowly varying magnetic field. It is found that the system of magnets does not show any motion. The north-south poles of one magnet are shown in figure. Determine the poles of the remaining two.

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

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.

A metalic ring is attached with the wall of a room. When the north pole of a magnet is brought near to it, the induced current in the ring will be

A small iron bar is kept near the north pole of a bar magnet. How does the iron bar acquire magnetism ? Draw a diagram to show the polarity on the iron bar. What will happen if the magnet is removed ?