Electromagnetism is the branch of physics that deals with the interactions between electrically charged particles. It is based on two fundamental principles: electric charge and magnetic fields. When an electric current flows through a wire, it produces a magnetic field around the wire. This is known as electromagnetism.
A simple motor, like that of a fan, works on the principle of electromagnetism. It consists of a coil of wire, known as an armature, that is attached to a shaft. The armature is placed between two magnets, creating a magnetic field. When an electric current is passed through the armature, it becomes an electromagnet and interacts with the magnetic field, causing the armature to rotate. This rotation of the armature powers the fan blades, creating the airflow.
In a fan motor, the direction of the electric current through the armature is constantly changing to keep the armature rotating in the same direction. This is achieved using a commutator and brushes. The commutator is a rotating switch that changes the direction of the current passing through the armature at specific points in its rotation. The brushes are in contact with the commutator, conducting the electric current from the power source to the armature.
In summary, a simple motor like that of a fan works by using the principles of electromagnetism to convert electrical energy into mechanical energy, resulting in the rotation of the motor shaft and the fan blades.
Explain the basic principles of electro magnetism and how simple motor like that of a fan works.
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