wht is work of a magnet in a speaker ???????

Asked by Sunny Meska | 8th Nov, 2010, 12:00: AM

Expert Answer:

Dear student
 
The current, alternating at the same frequency as the sound waves that generated it, induces an alternating magnetic field in the coil. As the polarity of the magnetic field of the coil alternates, it is alternatively attracted to and repelled by the permanent magnet. This causes the coil to vibrate. The vibrating coil causes the attached cone shaped diaphragm to vibrate and reproduce the sounds generated by the original source.
 
 
 
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Answered by  | 9th Nov, 2010, 12:35: PM

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