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level: The motor effect (HARD)

Questions and Answers List

level questions: The motor effect (HARD)

Question	Answer
A device that converts electrical energy into mechanical energy through the interaction of a current-carrying coil and a magnetic field.	Electric Motor
What causes a wire coil carrying a current in a magnetic field to rotate?	The interaction between the current-carrying coil and the magnetic field causes the coil to rotate.
A rule used to determine the direction of force, current, or thrust in a magnetic field by using the left hand.	Fleming's Left-Hand Rule
How does Fleming's left-hand rule help determine the direction of rotation in an electric motor?	Fleming's left-hand rule is used to show the direction in which the coil will turn based on the direction of the magnetic field, current, and force.
Devices used in electric motors to reverse the direction of current flow in the coil each half turn, ensuring continuous rotation.	Split Ring Commutators
What is the role of split ring commutators in an electric motor?	Split ring commutators change the direction of the current in the coil after each half turn, maintaining continuous rotation and preventing wire tangling.
The uninterrupted circular movement of the coil in an electric motor.	Continuous Rotation
How do split ring commutators contribute to continuous rotation in an electric motor?	By reversing the direction of current in the coil after each half turn, split ring commutators ensure continuous and consistent rotation.
The function of split ring commutators to avoid entanglement or twisting of wires in an electric motor.	Prevention of Wire Tangling
Why is preventing wire tangling important in the operation of an electric motor?	Preventing wire tangling ensures the smooth and efficient functioning of the electric motor, avoiding disruptions or damage.
Energy associated with the movement or motion of an object.	Mechanical (Kinetic) Energy
What type of energy conversion occurs in an electric motor?	An electric motor converts electrical energy into mechanical energy, producing rotational motion.
The fundamental principle in electric motors where the coil's rotation is induced by the interaction with a magnetic field.	Interaction of Coil and Magnetic Field
What is the key interaction that leads to the rotation of the coil in an electric motor?	The rotation of the coil is induced by the interaction between the current-carrying coil and the surrounding magnetic field.