generator effect

Cards (17)

  • What is the generator effect also known as?
    Electromagnetic induction
  • What happens when a wire moves through a magnetic field?
    It induces a potential difference in the wire
  • What occurs to the potential difference when the wire stops moving?
    The potential difference disappears
  • Why does the potential difference disappear when the wire stops moving?
    Because there is no change in the magnetic field
  • What happens to the direction of the potential difference when the direction is changed?
    The direction of the potential difference swaps
  • What is required for the induced potential difference to generate current?
    A complete circuit must be formed
  • What happens if the wire is kept still while moving the magnets?
    A change in the magnetic field induces current
  • What occurs when the wire moves back and forth without changing the magnetic field?
    No induced potential difference or current
  • How can the size of the induced potential difference be increased?
    By changing the strength of the magnetic field
  • What effect does moving the wire or magnets more quickly have?
    It increases the induced potential difference
  • How does shaping the wire into a coil affect the induced potential difference?
    More turns increase the induced potential difference
  • What are the key factors that increase the strength of the induced current?
    • Increase the strength of the magnetic field
    • Move the wire or magnets faster
    • Add more turns to the coil
  • What happens when a magnet is moved into and out of a coil of wire?
    It induces a potential difference in the coil
  • What occurs when the direction of the magnet is changed?
    The direction of the current changes
  • How can the direction of the current be changed besides moving the magnet?
    By swapping the poles of the magnets
  • What is the key idea in electromagnetic induction?
    A change in the magnetic field
  • What is the relationship between the movement of the magnetic field and the coil?
    Movement induces a potential difference in the coil