The Microphone (T)

• What is the main topic of the video?

  The video explains how a moving coil microphone works.
• What is the generator effect in relation to a conducting wire?

  • A conducting wire passing through a magnetic field induces a potential difference.
  • If the wire forms a complete circuit, a current is induced.
• How does a moving coil microphone utilize the generator effect?

  A moving coil microphone uses the generator effect to induce a potential difference when sound waves vibrate the diaphragm.
• What components are found inside a moving coil microphone?

  • A coil of wire
  • A diaphragm (thin sheet of plastic)
  • A permanent magnet
• What happens to the coil of wire when sound waves hit the diaphragm?

  The coil of wire moves in and out through the magnetic field due to the diaphragm's vibrations.
• How does the movement of the coil affect the potential difference in a moving coil microphone?

  The coil's movement induces a potential difference that switches direction with its motion.
• What is the relationship between the frequency of the changing potential difference and the frequency of sound waves?

  • The frequency of the changing potential difference is the same as the frequency of the sound waves.
• What happens to the changing pattern of potential difference in a moving coil microphone?

  It is passed to an amplifier to increase the volume of the sound.
• What is the purpose of the amplifier in a moving coil microphone system?

  • To increase the volume of the sound.