motor effect

• What is the motor effect?

  A current carrying wire in a magnetic field experiences a force
• What happens when a current carrying wire is placed in a magnetic field?

  The wire experiences a force that pushes it out
• What angle must the wire be at to experience full force?

  90 degrees to the magnetic field
• What happens if the wire runs in the same direction as the magnetic field?

  It feels no force at all
• What two directions do we need to know to find the force's direction?

  The direction of the magnetic field and current
• What is Fleming's left-hand rule used for?

  To determine the direction of the force
• How do you position your fingers for Fleming's left-hand rule?

  Thumb up, first finger forward, second finger out
• In the context of a horseshoe magnet, what happens when the power source is turned on?

  The rails generate a magnetic field and experience a force
• How do you determine the direction of the force in the horseshoe magnet scenario?

  Use Fleming's left-hand rule again
• What does the first finger represent in Fleming's left-hand rule?

  The direction of the magnetic field
• What does the second finger represent in Fleming's left-hand rule?

  The direction of the current
• What does the thumb represent in Fleming's left-hand rule?

  The direction of the force felt by the wire
• What is the equation to calculate the force on a wire?

  F = BIL
• What does each variable in the equation F = BIL represent?

  F = force, B = magnetic flux density, I = current, L = length
• How do you convert 10 centimeters to meters for the calculation?

  Divide by 100 to get 0.1 meters
• What force does a 10 cm wire with 5 A current in 0.4 T experience?

  0.2 newtons
• What are the steps to calculate the force on a wire in a magnetic field?

  1. Ensure all measurements are in correct units
  2. Use the equation F = BIL
  3. Substitute values for B, I, and L
  4. Calculate the force
• What are the key concepts related to the motor effect?

  • Interaction of magnetic fields
  • Force on current-carrying wires
  • Fleming's left-hand rule
  • Calculation of force using F = BIL