What is the name of the device used to step up or step down alternating voltage based on mutual induction?

💡 Solution & Explanation

A transformer operates on the principle of electromagnetic induction between multiple coils to alter alternating voltage levels efficiently without changing frequency. Devices like electric motors convert electrical energy into mechanical energy, whereas generators perform the reverse conversion. Power transmission grids rely heavily on step-up transformers to minimize resistive energy losses over long distances. Faraday's law of induction forms the theoretical underpinning for all transformer designs.