What is an electric motor? How it works?

It is a rotating device. An electric motor chips away at the rule that when a rectangular loop is set in an attractive field and a flow is gone through it, a power follows up on the curl which pivots it consistently. Consequently, electrical energy is changed over into mechanical energy. 

At the point when the current starts to stream, current courses through brush X, then, at that point, A to B, B to C, C to D and afterward to brush Y and into the battery.

Presently applying Fleming's Left Hand Rule to wire AB, Current is along AB, Magnetic Field is as displayed (North-> South), the movement of the wire is downwards.

Presently applying Fleming's Left Hand Rule to wire CD, Current is along CD, Magnetic Field is as displayed (North-> South), the movement of the wire is upwards.

The rectangular loop starts to move in the counter clockwise bearing

Note that during against clockwise movement, the split rings and hub likewise move, while the brushes don't move.

After a large portion of a pivot, Wire CD and Split ring Q moves to one side. Wire AB and Split ring P moves to right. Brushes X and Y donot move.

Presently applying Fleming's Left Hand Rule to wire CD, Current is along DC. (Battery - > Split ring Q - > DC , Magnetic Field is as displayed (North-> South), the movement of the wire is downwards.

Presently applying Fleming's Left Hand Rule to wire AB, Current is along BA. (Battery - > Split ring Q - > DC - - > CB - > BA - - > Split ring P) , Magnetic Field is as displayed (North-> South), the movement of the wire is upwards.

Thus, again the loop turns in the counter clockwise heading.

The inversion of current in the loop results in the continous pivot of the curl. The inversion of current is accomplished by the commutator rings.