Applications of Electromagnetic Field – Electric Motor

Topic Content:

What is an Electric Motor?

An electric motor is a device that converts electrical energyEnergy is the ability to do work. Energy exists in several forms such as heat, kinetic or mechanical energy, light, potential energy, and electrical energy. Units of Energy: The SI unit... More into mechanical energy using the magnetic effect of electricity.

It consists of:

• a strong powerful magnet to produce a strong magnetic field (B). The magnets are designed (two curved pole pieces) such that they produce a radial magnetic field so that a maximum force can be exerted on the coil or wire 

• a rectangular coil of wire known as an armature which rotates about an axis. It is used to concentrate the magnetic field on the coil and gives the coil the necessary momentum to keep turning

• two halves of a split-ring commutator S₁ and S₂ to reverse the direction of current in the coil every cycle.

• two carbon brushes B₁ and B₂ , which allow current to enter and leave the coils.

How does an Electric Motor Work?

The device below is called