Inductive coupling

Inductive coupling is a method of transferring electrical energy wirelessly between two objects using changing magnetic fields. When an electric current flows through a coil (the transmitter), it creates a magnetic field. If another nearby coil (the receiver) is exposed to this changing magnetic field, it induces a current in that coil without direct contact or wires. This technique is commonly used in wireless charging devices, RFID systems, and transformers, enabling efficient energy transfer over short distances without physical connections.