How does a brushed dc electric motor works?

Question

can you please explain it in detail?

Answer 1

You have an static field and then if you put current in an coil , the field generated will be atracted to uno side and expeled to the other side of the static field. Now imagine you change the current , will be atracted to the other side and will keep turning. Well the change is made with the brushes over the conmutator.

Go to wikipedia.org and look for dc motors and you will find all the explanation

Answer 2

Brushed DC Motor is the convectional DC Motor.

This has stator and rotor. Generally stator contains copper winding. This is stationary.

Rotor also contains copper winding but moves.

The torque production concepts -

When two magnets N & S poles kept at a distance, we observe that they will attract. This simple phenomena is occured here.

Here instead of magnets " electromagnets" being used. i.e. A stator core wounded with copper and current passed through it acts as magnet. This phenomena is known as Electromagnetism.

Hence coming to Brushed DC Motor principle-

The stator produces a stationary electromagnetic field.

Rotor produces a magnetic field which will produce the torque due to which the rotor will rotate. Brushes and commutator are provided to facilitate the rotor rotating despite being powered.

Concluding - The brushes & commutator in DC Motor finds the position of rotor magnetic field and excites the stator winding in such a way that rotor moves in the positive direction with the required torque.

Hope this helped.