Question

what is a magnetic field of a magnet how can the magnetic field lines of a bar magnet be observed​

Answer 1

Answer: A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. A charge that is moving parallel to a current of other charges experiences a force perpendicular to its own velocity.A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. A charge that is moving parallel to a current of other charges experiences a force perpendicular to its own velocity.Image result for how can the magnetic field lines of a bar magnet be observed​

The magnetic field lines of a bar magnet can be traced out with the use of a compass. The needle of a compass is itself a permanent magnet and the north indicator of the compass is a magnetic north pole. ... Unlike magnetic poles attract, so the north indicator of the compass will point toward the south pole of a magnet.

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Answer 2

Magnetic field is an area around a magnet or materials that behave like a magnet, where there is a force that will attract some metals towards it.