what is electric motor give its principle construction and working of it Related: Magnetic Field due to Electric Current?

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what is electric motor give its principle construction and working of it Related:  Magnetic Field due to Electric Current?

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Electric Motor

Principle of Electric Motor

- An electric motor is a device that converts electrical energy into mechanical energy.
- It operates on the principle of electromagnetic induction, where a current-carrying conductor experiences a force when placed in a magnetic field.

Construction of Electric Motor

- The main components of an electric motor include a coil of wire (armature), a magnet, and a commutator.
- The coil is mounted on an axle and placed in between the poles of the magnet.
- The commutator is a rotating switch that reverses the direction of the current in the coil, ensuring continuous rotation.

Working of Electric Motor

- When a current is passed through the coil, it creates a magnetic field that interacts with the magnetic field of the permanent magnet.
- This interaction causes a torque to be exerted on the coil, resulting in rotational motion.
- As the commutator switches the direction of the current, the coil continues to rotate in the same direction.

Magnetic Field due to Electric Current

- When an electric current flows through a conductor, it creates a magnetic field around the conductor.
- The direction of the magnetic field can be determined using the right-hand thumb rule, where the thumb points in the direction of the current and fingers curl in the direction of the magnetic field.
- The strength of the magnetic field is directly proportional to the current flowing through the conductor.

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