Uploaded July 2017 | Updated September 2026, 3 weeks ago
This easily assembled motor is able to run for more than five hours on a simple D cell battery. This motor works because electricity runs through the coil of wire, and a magnetic field is formed. The wire of the coil has an insulated coating which is scraped off one side of each end. The magnetic field only forms when the bare wire touches the metal supports. When current passes through the coil it becomes an electromagnet and the permanent magnet repels the coil it making it spin. As it turns, the current turns on and off depending on whether the copper posts are in contact with the bare wire or the insulated wire. Available at teachersource.com/product/worlds-simplest-motor/electricity-and-magnetism
This easily assembled motor is able to run for more than five hours on a simple D cell battery. This motor works because electricity runs through the coil of wire, and a magnetic field is formed. The wire of the coil has an insulated coating which is scraped off one side of each end. The magnetic field only forms when the bare wire touches the metal supports. When current passes through the coil it becomes an electromagnet and the permanent magnet repels the coil it making it spin. As it turns, the current turns on and off depending on whether the copper posts are in contact with the bare wire or the insulated wire. Available at teachersource.com/product/worlds-simplest-motor/electricity-and-magnetism
