Motor effect

• Motor effect - when a current carrying wire in the prescence of a magnetic field experiences a force
• full force = 90
• Fleming's left hand rule

  A) Force

  B) Magnetic field

  C) Current

  
• F = B I L
• Ways to increase speed of rotations:

  • increase current
  • Add more turns in coil
  • Increase magnetic flux density
• split ring commutator - Allows current to change direction every half turn
• Motor Effect

  A) Negative

  B) Positive

  C) Split ring commutator