Bar magnets are a common type of magnet used in physics and engineering laboratories for various experiments and demonstrations. They have a rectangular shape and are typically made of a ferromagnetic material such as iron, steel, or neodymium.
Bar magnets produce a magnetic field that is strongest at the poles, which are located at the ends of the magnet. The strength of the magnetic field depends on the size of the magnet and the distance between the poles.
Bar magnets can be used to study magnetic fields, magnetic force, and magnetic induction, among other phenomena. They are also commonly used in applications such as electric motors, generators, and speakers.