the motor effect

    Cards (17)

    • What concept describes the force on a current-carrying wire in a magnetic field?
      The motor effect
    • What determines the direction of the force on a wire in a magnetic field?
      The directions of the magnetic field and current
    • How can you determine the direction of force on a wire using Fleming's rule?
      By using Fleming's left hand rule
    • What happens to the force direction if the current direction in a wire is reversed?
      The force direction also reverses
    • What occurs when two wires are connected at one end in a coil with current flowing?
      • The left side experiences an upwards force
      • The right side experiences a downward force
      • The coil starts to spin clockwise
    • What happens to the current direction when the coil is rotated by 180 degrees?
      The current travels in the opposite direction
    • What is the effect of the current direction change on the forces acting on the coil?
      The forces on each side swap direction
    • What happens if the coil keeps flipping back and forth without intervention?
      • It won't complete a 360-degree rotation
      • It won't be useful for practical applications
    • What device is used to change the direction of current every half turn in a motor?
      A split ring commutator
    • What does the split ring commutator do in a motor?
      Swaps positive and negative connections
    • How does the split ring commutator affect the coil's rotation direction?
      It ensures the coil rotates in the same direction
    • What are the practical applications of electric motors?
      • Fans
      • Vehicles
      • Hard drives
    • What is the fundamental principle behind electric motors?
      Creating spinning motion using electricity
    • How can the speed of an electric motor's rotation be increased?
      • Increase the current
      • Add more turns to the coil
      • Increase magnetic flux density
    • What is one way to increase the power of an electric motor?
      Increase the current passing through the wire
    • What is another method to enhance motor performance?
      Add more turns to the coil
    • What can be done to increase the magnetic flux density in a motor?
      Use more powerful magnets
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