Speaker is a device used in many electronic circuit.the speaker is produce sound that hear by our ears.speaker is used in TV,mobile etc.we connect the audio to the speaker and produce audio .how does it work.when the audio signal connected to the speaker.inside the speaker vibrating and produce sound why vibrating.inside the speaker has coil it is made up of copper.the coil transform to magnetic field when the audio signal gets the coil respond to the backside magnetic and vibration made and produce sound. The high volume connected to a speaker produce sound and distortion because the coil will heavy vibrating
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