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Question
Name the major parts present in a loudspeaker. Also, explain the working of a loudspeaker.
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Solution
The major parts of a loudspeaker are permanent magnet, coil, screen and microphone.
- A loudspeaker consists of a permanent magnet. A coil is wound around it and if a current flows through this coil, it also generates a magnetic field.
- If two magnets are brought near each other, they move depending on their positions.
- In the same way, here, depending on the magnetic field created due to the coil, the coil moves back and forth. The frequency and amplitude of the movement of the coil depends on the variation in the current flowing through the coil.
- As the coil moves, the conical screen of the loudspeaker, which is attached to the coil, also moves back and forth. We have seen that due to back and forth motion of the prongs of the tuning fork, sound waves are produced.
- In the same way, here, due to back and forth motion of the loudspeaker screen, sound waves are produced in air.
- A loudspeaker consists of a permanent magnet. A coil is wound around it and if a current flows through this coil, it also generates a magnetic field.
- If two magnets are brought near each other, they move depending on their positions.
- In the same way, here, depending on the magnetic field created due to the coil, the coil moves back and forth. The frequency and amplitude of the movement of the coil depends on the variation in the current flowing through the coil.
- As the coil moves, the conical screen of the loudspeaker, which is attached to the coil, also moves back and forth. We have seen that due to back and forth motion of the prongs of the tuning fork, sound waves are produced.
- In the same way, here, due to back and forth motion of the loudspeaker screen, sound waves are produced in air.
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