1. What is magnet ?
Magnets work by generating a magnetic field. A magnetic field is a region of space
where a magnetic force is exerted on other magnets or magnetic materials. The
magnetic field of a magnet is strongest at its poles, which are located on opposite
ends of the magnet. Opposite poles of magnets attract each other, while the same
poles repel each other.
The magnetic field of a magnet is caused by the motion of electrons within the atoms
of the magnet. Electrons are subatomic particles that have a negative charge. When
electrons move, they create a magnetic field. In a magnet, the electrons are all
moving in the same direction, which creates a strong magnetic field.
There are two main types of magnets: permanent magnets and electromagnets.
Permanent magnets are made of materials that have a natural magnetic field, such
as iron, nickel, and cobalt. Electromagnets are made of materials that do not have a
natural magnetic field, such as copper or steel. Electromagnets work by passing an
electric current through a coil of wire. The current creates a magnetic field around
the coil, which magnetizes the metal core of the electromagnet.
Types of magnet
Magnets are used in a wide variety of applications, including: