Schmidt's Law

Schmidt's Law describes how the strength of a magnetic field generated by a coil or solenoid changes depending on the shape of the magnetic core inside it. Specifically, it states that the magnetic flux density (B) is directly proportional to the magnetomotive force (MMF), which depends on the current and coil turns, and inversely proportional to the magnetic reluctance, influenced by the core’s properties and shape. Essentially, the law helps us understand and predict how different core materials and geometries will affect a magnetic circuit's efficiency and magnetic field strength.