Microphone - GCSE Physics Definition

A microphone is a device that changes sound waves into electrical signals. It captures sounds, like your voice, and turns them into a form that can be sent through wires to speakers or recording devices. In GCSE Physics, you'll learn that it does this by using a small diaphragm that vibrates a coil. The coil uses the generator effect to induce a current that matches the sound waves. Microphones are used in many everyday items, like mobile phones, computers, and musical equipment, to help us communicate or record sounds.