Electromagnets

Cards (18)

  • Middle finger
    Represents the direction of the current
  • Iron core

    Increases magnetic field strength of electromagnet
  • Solenoid
    Is a Coil of insulated wire
  • Wire carrying current
    Creates a magnetic field
  • force(N) = Magnetic flux density(T) x Current x Length(M)
  • Forefinger
    Represents the direction of the magnetic field
  • Number of coils
    Increases the strength of the magnetic field
  • Motor effect
    Force created by the interaction between a wire carrying current and another magnetic field. Force is exerted at right angles
  • Electromagnet
    Is a solenoid with an iron core
  • Fleming's Left Hand Rule used to find direction of force from Motor effect
  • Current flowing in a wire creates a magnetic field
  • Magnetic field strength
    Greater closer to the electromagnet
  • Shape of wire (spiral) creates a strong magnetic field
  • Thumb
    Represents the direction of the magnetic force
  • Interaction between two magnetic fields
    Can cause a force
  • Increasing the current
    Increases the strength of the magnetic field
  • Anti-clockwise field means the current is going towards you
  • Clockwise field means the current is going away from you