the motor effect

• Motor effect


  The force experienced by a wire carrying an electric current when placed in a magnetic field
• Calculating the force on a wire

  Force (N) = Magnetic flux density (T) x Current (A) x Length of wire (m)
• Factors affecting the force on a wire

  • Magnetic flux density
  • Current
  • Length of wire
• Using Fleming's left hand rule


  1. Point first finger in direction of magnetic field

  2. Point second finger in direction of conventional current

  3. Thumb points in direction of force/motion
• If the conductor is parallel to the magnetic field, it will not experience a force