Explain the principle and working of an electric motor. What is the function of a split ring in an electric motor?

An electric motor is a device used to transform electricity into mechanical energy opposite to an electric generator. They operate employing principles of electromagnetism, which determines that a force is applied when an electric current is present in a magnetic field. Motors have many various working parts in order for them to continually rotate, providing Power as needed. Motors can run off of direct current (DC) or alternating current (AC), and both have their benefits and drawbacks.

Parts in an electric motor

  • Stator: The stationary part of the motor, especially the magnet. Electromagnets are often used in order to provide more power.
  • Rotor: The coil that is positioned on an axle and spins at high speeds, producing rotational mechanical energy to the system.
  • Commutator: This component is key in DC motors, Without it, the rotor would not be able to spin continuously due to opposing forces created by the changing current. The commutator permits the rotor to spin by reversing the current each time the coil does a half turn.
  • Power source: Supplies an electromotive force that causes current to flow in the system.
  • Brushes: These are attached to the terminals of the power source, allowing electric power to flow into the commutator.

Principle of electric motor

The working of an electric motor is based on the fact that a current-carrying conductor produces a magnetic field around it. To better understand, imagine the following situation.

  • Take two bar magnets and keep the poles facing each other with a small space in between. Now, take a small length of a conducting wire and make a loop. Keep this loop in between the space between the magnets such that it is still within the sphere of influence of the magnets. Now for the last bit. Connect the ends of the loop to battery terminals.
  • The working of an electric motor is based on the fact that a current-carrying conductor produces a magnetic field around it. To better understand, imagine the following situation.
  • Take two bar magnets and keep the poles facing each other with a small space in between. Now, take a small length of a conducting wire and make a loop. Keep this loop in between the space between the magnets such that it is still within the sphere of influence of the magnets. Now for the last bit. Connect the ends of the loop to battery terminals.

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3 Comments

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