Answer:
Step-by-step explanation:
Definition-
A material known as a permanent magnet can generate a magnetic field on its own, without the aid of an external magnetic field or electric current. The term "permanent" refers to the fact that it is made of a magnetized substance that maintains its magnetism over an extended length of time. Units of magnetic flux density, such as tesla (T) or gauss (G), are used to quantify the strength of permanent magnets.
Composition and Nature-
Ferromagnetic components including iron, nickel, cobalt, and their alloys are frequently used to create permanent magnets. These substances possess a potent magnetic field that aligns the electron spins and generates a net magnetic field. A permanent magnet creates an ever-present magnetic field that doesn't need any extra energy to keep it going.
In many different applications, including electric motors, generators, magnetic separation equipment, and magnetic resonance imaging (MRI) machines, permanent magnets are employed. They are also found in commonplace goods like magnetic toys and refrigerator magnets.