Magnetic field due to a current loop, solenoid

Magnetism and electricity are two separate terms but interconnected phenomena which form the basis of electromagnetism. Magnetism is the force exerted by the magnets caused by the motion of electric charges. Magnetising a wire’s coil can be one of the uses of magnets. All the magnets have two poles: north and south. The earth is […]

Ferromagnetism is a phenomenon in which certain items that can be charged with electricity attract others with energy. Two substances found in nature, lodestone (or magnetite, iron oxide, Fe3O4) and iron, have the potential to receive such attractive energy and are commonly referred to as natural ferromagnets. It was 2000 years in the past that

Magnets can be classified into two categories based on the nature of their composition, source of magnetism and magnetic properties. These include permanent magnets and electromagnets or temporary magnets. Permanent magnets can retain their magnetising properties, whereas temporary magnets or electromagnets cannot retain their magnetic properties.  Permanent Magnet Definition A permanent magnet is a magnetised

Solenoids are the cylindrical shape obtained by the number of turns of the conducting wires having several circular loops. When this coil is connected to the current, a magnetic field is generated inside the coil due to the flow of the current. When a soft material is used inside the coil, it becomes a magnet

Paramagnetic substances, such as liquids, are very weakly magnetised in the direction of an externally applied magnetic field. They lose their magnetic properties when the field is removed. They tend to orient themselves where they feel the magnetic field more strongly. Paramagnetic liquids have a permanent magnetic moment or dipole because of the presence of

Liquids that are freely magnetised by magnetic fields are called diamagnetic liquids. In this case, magnetisation occurs in the opposite direction to the magnetic field. Diamagnetism is displayed in these materials. Diamagnetic liquids are repellent to the external magnetic field. The orbital angular momentum of electrons in an atom is determined by their rotation around

Magnetic Field A magnetic field is a vector field that describes the magnetic effect on moving electric charges, electric currents and magnetic substances. A mobile charge in a magnetic field experiences a force perpendicular to the velocity of the mobile charge and to the magnetic field.  A permanent magnet’s magnetic field pulls on ferromagnetic substances

Toroid is a doughnut-shaped hollow circular ring with several turns of insulated wire twisted so close together that there is no room between them. When high inductances are required at low frequencies, a toroid can be thought of as a circular solenoid utilized in an electric circuit as an inductor. Michael Faraday, a physicist, invented the

A self-exciting dynamo process in the fluid outer core generates the Earth’s magnetic field. The magnetic field is created by electrical currents running through the slowly moving molten iron. In addition, external sources, including but not limited to the ionosphere and magnetosphere, also contribute to the geomagnetic field observable at the Earth’s surface. There are

A solenoid is just a coil of wire that forms a cylindrical shape. When an electric current is passed through a solenoid, it tends to adopt the magnetic properties in which electricity is changed to magnetism and then again changed into electricity. The shape of the solenoid reassembles the shape of the bar magnet and