why are magnet used in speaker to form a sound
Answers
Explanation:
magnets are used in speaker to create an opposing magnetic field which creates vibrations...larger the magnet louder the sound ☺☺
Answer:
Magnets are used in speakers to translate an electrical signal into an audible sound by vibration.
An audio speaker is a mechanism for turning electrical waves into physical waves so that air can be moved. Electricity and magnetism are connected forces. In fact, winding up wires over and over again into a coil can make an electromagnet as long as some current is flowing inside. The speaker operates on the principle of how a permanent magnet will attract and repel an electromagnet.
A permanent magnet is attached to a frame inside the speaker. The electromagnet is fitted inside the permanent magnet, and is also attached to the diaphragm. The diaphragm is the part of the speaker that pushes air, and often looks like a cone.
When the alternating electrical current flows through the coil inside the permanent magnet, it is alternately attracted and repelled, causing it to move, and push the diaphragm. The frequencies at which the coil moves are equivalent to the frequencies at which the diaphragm is moved, and equal to the frequencies we hear. Higher current through the coil results in larger movements and louder sounds; likewise, lower currents result in hushed sounds. Higher frequencies cause higher pitch, whereas lower frequencies cause lower pitch.