Why Magnet Is Used In Speaker ..??
All
speakers don't use magnets. Only magnetic speakers use a magnet to
produce mechanical vibration (sound) through the interaction between the
magnetic field created by the pulsating electronic signals passing
through a coil suspended in the strong magnetic field of the magnet.
Other types of speakers like piezo speakers (for example, buzzers in
wrist watches) don't use a magnet. Piezo speakers use piezo electric
effect. They generate mechanical vibration by applying an electric
signal to a piezo electric crystal.
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