5 A student says 'a microphone is a bit like a loudspeaker in reverse' Do you agree?
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Answer:
Yes, I agree with your statement....As
MICROPHONES = REVERSE LOUDSPEAKERS
It is true that although they look nothing alike, a microphone and a loudspeaker actually have a lot in common. Just read a little bit on loudspeakers and you will realize they work the exact opposite way as a microphone.
In fact, the parts of a microphone and the parts of a loudspeaker are almost exactly the same. One of the key components in both of them is simply a coil of metal wrapped around or sometimes, in front of a magnet. In a loudspeaker, electricity courses through this coil, creating a magnetic field. This magnetic field acts on the magnets causing the coil to move. Because the coil is attached to another part of the loudspeaker called the diaphragm or cone this part also moves. This movement causes air motion and this actually causes the sound waves that people can hear.