Question

Define the term magnetic field of a magnet. How will you recognize it experimentally?

Answer 1

Hint:The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. In a magnetic field, a moving charge experiences a force that is perpendicular to both its own velocity and the magnetic field.

Complete answer:
A magnetic field is the area surrounding a magnet in which a magnetic substance, such as a small bit of iron, will be attracted to the magnet.Recognition of the magnetic field around a magnet: If a magnet is placed beneath a piece of stiff paper with some iron filings strewn on it, the iron filings are observed to organise themselves in a certain pattern when the sheet is lightly tapped, as illustrated in figure.

Additional Information:Magnetic fields are used in almost every aspect of modern technology, especially electrical engineering and electromechanics. Electric motors and generators both require rotating magnetic fields. Magnetic circuits are used to model and explore the interaction of magnetic fields in electric devices such as transformers.

Note:It's worth mentioning that the Hall effect uses magnetic forces to reveal information about charge carriers in a substance. The Earth generates its own magnetic field, which protects the ozone layer from the solar wind and is useful in compass navigation. A magnetometer is an instrument that measures the local magnetic field. Induction magnetometers (or search-coil magnetometers) that measure just fluctuating magnetic fields, rotating coil magnetometers, Hall effect magnetometers, NMR magnetometers, SQUID magnetometers, and fluxgate magnetometers are all important types of magnetometers.