Mutual induction is the process by which a changing magnetic field in one coil induces a current in a neighboring coil.
The principle behind mutual induction is Faraday's Law, which states that a changing magnetic field will induce an electromotive force (emf) in a conductor.
The factors that affect mutual induction include the number of turns in the coils, the distance between the coils, and the strength of the magnetic field.
The formula for calculating mutual induction is M = NΦ/ΔI, where M is the mutual inductance, N is the number of turns in the secondary coil, Φ is the magnetic flux through the coil, and ΔI is the change in current in the primary coil.
Mutual induction is used in transformers, which are essential in power distribution and voltage regulation. It is also used in wireless charging technology and electromagnetic sensors.