Describe mutual induction and write their uses .
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...