Magnetomotive Force (mmf) : Magnetomotive Force is the product of current and number of turns. More current and more turns leads to greater magnetizing effect. Unit of mmf is ampere turns. mmf = NI...

General Terms associated with Magnetism: Magnetic field: The space around a magnet in which a magnetic pole experience a force is called Magnetic field. Magnetic lines of force: Magnetic field around a magnet is...

Permalloy, Perminvar and Mumetal Permalloy : It is a soft magnetic material, it is an alloy of Iron and Nickel.( Iron=78.5% and Ni = 21% ), which can be magnetized by a very weak...

Magnetostriction : When ferromagnetic materials are magnetized, there are small changes in its dimensions. The phenomenon is called Magnetostriction. When subjected to rapidly alternating magnetic fields there is a rapid and continuus  extention and...

Curie Point / Curie Temperature There is a critical Temperature called Curie Point, above which the ferro magnetic material lose their magnetic property and to become a paramagnetic material. The curie temperature is named...