write the principal of working of electric motor
please be fast
Answers
An electric motor uses the attraction and repulsion of magnetic fields to produce motion. The simplest is the permanent magnet motor. Placing a coil of wire inside a permanent magnetic field and fixed so it can freely rotate. Pass a current through the coil of wire and it will rotate to the perpendicular position. Now reverse the current flow and the coil will spin 180 degrees. The brushes and the commutator does the switching directions of the current through the coil at the appropriate moment to keep the coil rotating in one direction. This is the basics of all electric motors.
A coil carrying electric current placed in an external magnetic field experiences a force . function of armature : enhances the power of metro and induces motor . function of brushes : helps easy transfer of charge between the coil and the external circuit