- Study guides, Class notes & Summaries

What is magnetism and how is it produced? Magnetism is a force caused by moving electric charges or the intrinsic magnetic moments of elementary particles, often resulting from electron spin. What is the difference between a permanent magnet and an electromagnet? A permanent magnet retains its magnetism without an external power source, while an electromagnet generates magnetism only when electric current flows through it. What are magnetic domains? Magnetic domains are small regions within...