Question

Why are the piezoelectric crystals used in record players?

Answer 1

1. Piezoelectric crystals are used in record players because they convert mechanical vibrations into electrical signals. When the stylus (needle) of a record player moves along the grooves of a vinyl record, it vibrates.
2. These vibrations are transferred to a piezoelectric crystal placed inside the cartridge. Due to the piezoelectric effect, the crystal generates an electrical signal corresponding to the vibrations.
3. This signal is then amplified and sent to speakers to produce sound.
4. Thus, piezoelectric crystals help in accurate and efficient sound reproduction without requiring an external power source.