Exploring the Principles of an electromagnet for a DIY project for kids The electromagnet is the element that permits robotic machines to safely change battery current to mechanical force. Through utilizing the hardware within student projects, junior scientists are able to investigate the fascinating physics of invisible magnetic forces which https://artfulacesagi.webbuzzfeed.com/40352708/how-to-use-a-potentiometer-to-vary-an-electromagnet-strength