Generators, microphones and loudspeakers

• What do generators use to induce a current?

  Electromagnetic induction
• What does the type of current generated depend on?

  How the generator's input is configured
• What is the function of a dynamo generator?

  • Applies force to rotate a coil in a magnetic field
  • Induces a current in the coil
  • Functions similarly to a motor
• What happens as the coil spins in a dynamo generator?

  A current is induced in the coil
• How does the direction of current change in a dynamo generator?

  It changes direction every half turn
• What type of generator is a dynamo?

  Direct current generator
• What is the role of a split-ring commutator in a dynamo?

  • It reverses the connection every half turn
  • Keeps the current flowing in the same direction
  • Similar to a motor's commutator
• What does the rotating coil in a dynamo do?

  It cuts the lines of magnetic flux
• What happens to the current if the magnetic field is stronger?

  The current is greater
• How do alternators generate alternating current?

  They work similarly to dynamos but produce AC
• What do microphones use to generate an electrical signal?

  Electromagnetic induction from sound waves
• How do sound waves affect a diaphragm in a microphone?

  They cause it to vibrate
• What do sound waves create in a microphone's coil?

  An electrical signal
• What is the relationship between sound waves and the diaphragm's movement?

  Sound waves cause the diaphragm to move
• What do loudspeakers use to produce sound?

  Electromagnetic induction
• How do loudspeakers generate sound from electrical signals?

  They convert electrical signals into sound waves
• What is the primary function of a loudspeaker?

  To convert electrical energy into sound
• What happens when an electrical signal passes through a loudspeaker's coil?

  It creates a magnetic field that moves the diaphragm
• How does the diaphragm's movement relate to sound production in loudspeakers?

  Diaphragm movement creates sound waves
• What do generators use to induce a current?

  Electromagnetic induction
• What does the type of current generated depend on?

  How the generator's input is configured
• What is the function of a dynamo generator?

  • Applies force to rotate a coil in a magnetic field
  • Induces a current in the coil
  • Functions similarly to a motor
• What happens as the coil spins in a dynamo generator?

  A current is induced in the coil
• How does the direction of current change in a dynamo generator?

  It changes direction every half turn
• What type of generator is a dynamo?

  Direct current generator
• What is the role of a split-ring commutator in a dynamo?

  • It reverses the connection every half turn
  • Keeps the current flowing in the same direction
  • Similar to a motor's commutator
• What does the rotating coil in a dynamo do?

  It cuts the lines of magnetic flux
• What happens to the current if the magnetic field is stronger?

  The current is greater
• How do alternators generate alternating current?

  They work similarly to dynamos but produce AC
• What do microphones use to generate an electrical signal?

  Electromagnetic induction from sound waves
• How do sound waves affect a diaphragm in a microphone?

  They cause it to vibrate
• What do sound waves create in a microphone's coil?

  An electrical signal
• What is the relationship between sound waves and the diaphragm's movement?

  Sound waves cause the diaphragm to move
• What do loudspeakers use to produce sound?

  Electromagnetic induction
• How do loudspeakers generate sound from electrical signals?

  They convert electrical signals into sound waves
• What is the primary function of a loudspeaker?

  To convert electrical energy into sound
• What happens when an electrical signal passes through a loudspeaker's coil?

  It creates a magnetic field that moves the diaphragm
• How does the diaphragm's movement relate to sound production in loudspeakers?

  Diaphragm movement creates sound waves
• What do microphones generate from sound waves?

  Current
• How do microphones generate electrical signals?

  Through electromagnetic induction