Question:
A moving coil microphone is also called:
A moving coil microphone is also called:
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Dynamic microphones are reliable and commonly used in live performances due to their robustness and no need for external power.
Updated On: Jul 5, 2025
- Inductance microphone
- Condenser microphone
- Crystal microphone
- Dynamic microphone
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The Correct Option is D
Solution and Explanation
A moving coil microphone is commonly known as a dynamic microphone. This type of microphone operates on the principle of electromagnetic induction. It consists of a diaphragm attached to a small coil of wire, which is placed within the magnetic field of a permanent magnet.
When sound waves strike the diaphragm, it vibrates in response to the air pressure variations. These vibrations cause the coil to move back and forth within the magnetic field. According to Faraday’s law of electromagnetic induction, the movement of the coil within the magnetic field induces an electrical current in the coil. This electrical signal corresponds to the sound wave pattern and can be amplified and processed for audio applications.
Dynamic microphones are widely used because of their durability, simplicity, and ability to handle high sound pressure levels without distortion. They do not require an external power supply or batteries, unlike condenser microphones, which need a power source to operate.
In contrast, other types of microphones such as condenser microphones work on the principle of capacitance changes, and crystal microphones use the piezoelectric effect to convert sound waves into electrical signals.
Therefore, the moving coil microphone is called a dynamic microphone due to its mode of operation using electromagnetic induction.
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