Mutual induction is a phenomenon where a changing magnetic field in one coil induces a voltage in a nearby coil. It is utilized in various applications:
1. Transformers: Mutual induction is the basis of transformers, which are used to step up or step down voltages in electrical power transmission and distribution systems.
2. Inductive Coupling: Mutual induction enables wireless power transfer, RFID systems, and near-field communication, where energy or information is transferred between two circuits without direct electrical connection.
3. Inductive Sensors: Mutual induction is used in proximity sensors, position sensors, and metal detectors, where the presence of an object alters the mutual inductance and triggers a response.
4. Inductive Heating: Mutual induction is employed in induction heating systems for applications like induction cooking, metal heat treatment, and induction welding, where high-frequency magnetic fields generate heat in conductive materials.
5. Inductive Charging: Mutual induction is used in wireless charging systems for devices like smartphones and electric vehicles, enabling convenient and cordless charging.