The electric motor converts electricity into mechanical energy. In most cases, work on electromagnetic principle. Since, the experiment demonstrates a DC electric motor.
Educational phase: expozition, fixation
- DC electric motor
- power supply or batteries
Connect utilities to the circuit as shown.
The engine begins to rotate.
The simplest DC motor has a stator comprising a permanent magnet rotating armature in the form of an electromagnet with two poles. Rotary switch called a commutator changes the direction of electric current and the polarity of the magnetic field passing through the armature twice during each rotation. This ensures that the force acting on the rotor poles still has the same direction. At the moment of switching the polarity of the motor keeps running in the right direction inertia.