How to Build a Simple Electromagnet - Science Experiment Guide #3851454 (License: Personal Use)

This diagram illustrates a classic electromagnet experiment where insulated copper wire is tightly coiled around an iron nail and connected to a battery. When the circuit is closed, electric current generates a magnetic field around the coil, turning the nail into a temporary magnet capable of attracting small metal objects. Reversing the battery polarity flips the magnetic poles; disconnecting the battery demagnetizes the nail instantly.

Used in educational contexts-middle/high school physics lessons, science fair projects, or DIY STEM tutorials-to demonstrate electromagnetic induction and the relationship between electricity and magnetism. Matches user intent for hands-on learning, curriculum support, or quick visual explanation.