what does a homopolar motor prove
DIY simple homopolar motor made with a drywall screw, a battery cell, a wire, and a disk magnet. The magnet is on top of the screw head.The screw and magnet make contact with the bottom of the battery cell and are held together by the magnet's attraction.he name homopolar indicates that the electrical polarity of the conductor and the magnetic field poles do not change (i.e., that it does not require commutation).