Analyzing the Principles of an electromagnet in a DIY project for kids This magnetic coil is the element which permits robotic machines to safely change battery current to mechanical force. Through integrating this technology into youth experiments, junior scientists are able to explore the fascinating physics of invisible magnetic forces https://basicblueprintsnnm.blogripley.com/40768117/the-impact-of-surface-contact-area-on-an-electromagnet-grip