Bar Magnet as Equivalent Solenoid

A bar magnet can be modeled as an equivalent solenoid. The magnetic moment of a bar magnet as an equivalent solenoid can be derived by calculating the axial field of a finite solenoid carrying current. The similarity between magnetic field lines of a bar magnet and solenoid is that a bar magnet can be thought of as a large number of circulating currents in analogy with a solenoid. The image of magnetic field of a Solenoid is added below,

Read more about Magnetic Field of a Solenoid.

Difference between Bar Magnet and Electromagnet

The key difference between a bar magnet and an electromagnet lies in their magnetic properties:

• Electromagnet: An electromagnet, is a temporary magnet that can produce a magnetic field in the presence of electric current. It is formed when electric current is passed through wires wound around a soft metal core. The strength of the magnetic field produced by an electromagnet can be varied by controlling the electric current that passes through the wire. However, an electromagnet loses its magnetism once the current flow is stopped, requiring a continuous power supply to maintain the magnetic field.
• Bar Magnet: A bar magnet is a permanent magnet that can create its own persistent magnetic field. It has a fixed magnetic field strength and does not require an external power source to maintain its magnetism. The magnetism in a bar magnet is caused by the alignment of electron spins within the material, resulting in a constant magnetic field.

Read More,

• Magnetic Force on a Current-Carrying Wire
• Magnetic Field Strength
• Magnetism

Bar Magnet is a magnet that is rectangular in shape and has two poles, the North Pole and South Pole. The magnetic field of a bar magnet is maximum at its pole and minimum at its center. Bar Magnets are made up of Iron, cobalt, or any other Ferromagnetic materials that show magnetic properties. Bar magnets can be of various types including Cylindrical Bar magnets and Rectangular Bar magnets.

Bar magnets have fascinated us for centuries due to their practical applications in everyday tools and advanced technologies. In this article, we will dig deep into What a is Bar Magnet, the Properties of the Bar Magnet, the Application of Bar Magnet, and others in detail.