Electric Motor: in its simplest form! https://www.physicsfunshop.com/search?keywords=electric motor This easy to build kit consists of three basic components: coil, magnet, and battery. The wire of the coil has an insulating coating- and this coating is carefully scrapped off one side on each end. When current passes through the coil it becomes an electromagnet and the permanent magnet repels it making it spin- as it turns the current goes on and off depending on if the copper posts are in conta