Cards (59)

    • What is an electric motor used for?
      Converts electrical to mechanical energy
    • The motor effect occurs when a current-carrying conductor is placed in a magnetic field.
      True
    • The force in the motor effect is directly proportional to the current
    • Steps explaining the motor effect
      1️⃣ Current flows through conductor
      2️⃣ Magnetic field interacts
      3️⃣ Force exerted on conductor
      4️⃣ Conductor moves
    • The force in the motor effect is zero when the angle between the conductor and the magnetic field is parallel
    • Fleming's left-hand rule helps determine the direction of the force on a current-carrying conductor in a magnetic field.

      True
    • In Fleming's left-hand rule, the thumb points in the direction of the force
    • In Fleming's left-hand rule, what does the index finger indicate?
      Magnetic field
    • What is the motor effect?
      Force on a conductor
    • The current in the conductor is directly proportional to the motor effect force.
    • The rotor in an electric motor is a coil of wire
    • What does Fleming's left-hand rule help determine?
      Direction of force
    • The force in the motor effect is greatest when the conductor is parallel to the magnetic field.
      False
    • Which finger in Fleming's left-hand rule points in the direction of the magnetic field?
      Index finger
    • What is the angle between a conductor and a magnetic field when the force is greatest?
      90°
    • The middle finger in Fleming's left-hand rule points in the direction of the current
    • The strength of the motor effect force is directly proportional to the current in the conductor.

      True
    • The length of the conductor in a magnetic field is directly proportional to the motor effect force.
    • The motor effect force is greatest when the conductor is parallel to the magnetic field.
      False
    • Why does a current-carrying conductor experience a force in a magnetic field?
      Interacting magnetic fields
    • What happens to the motor effect force if the magnetic field strength decreases?
      Decreases
    • What is used to create the magnetic field in a DC electric motor?
      Permanent magnet
    • The commutator in a DC electric motor ensures continuous rotation by reversing the current direction.

      True
    • What is the term for the force experienced by a current-carrying conductor in a magnetic field?
      Motor effect
    • Match the component of an electric motor with its description:
      Power Source ↔️ Requires electrical current
      Magnetic Field ↔️ Creates magnetic force
      Rotor ↔️ Rotates when current flows
      Commutator ↔️ Reverses current direction
    • What type of energy does an electric motor convert into mechanical energy?
      Electrical energy
    • What are the four key features of an electric motor?
      Power source, magnetic field, rotor, commutator
    • What is the motor effect?
      Force on a conductor
    • What happens to the motor effect force if the magnetic field strength increases?
      Increases
    • What force is experienced by a current-carrying conductor in a magnetic field?
      Motor effect
    • The force is greatest when the conductor is perpendicular to the magnetic field.

      True
    • What is the motor effect?
      Force on current-carrying conductor
    • What happens to the motor effect force if the magnetic field strength increases?
      Increases
    • Arrange the steps shown in the flowchart for Fleming's left-hand rule:
      1️⃣ Current flowing into page
      2️⃣ Magnetic field from left to right
      3️⃣ Force upwards
    • The motor effect force is directly proportional to the current in the conductor.
    • Match the component of a DC electric motor with its description:
      Power Source ↔️ Provides electrical current
      Magnetic Field ↔️ Creates magnetic field
      Rotor ↔️ Coil of wire that rotates
      Commutator ↔️ Reverses current direction
    • The rotor in a DC electric motor is a coil of wire that carries the current and rotates.
    • Arrange the steps in how an electric motor generates motion:
      1️⃣ Current-carrying conductor placed in magnetic field
      2️⃣ Conductor experiences a force
      3️⃣ Rotor begins to rotate
    • The conductor in an electric motor that carries the current is called the rotor.
    • The commutator in an electric motor ensures continuous rotation by reversing the current direction.

      True