Electromagnetic induction

Electromagnetic induction. A changing magnetic flux induces a current into a coil. UPDATE (14/05/2011): An extended, 15-minute video on the topic is now available at or on my website at . Demo 1: As the magnet is moved in, the magnetic flux through the solenoid changes and an induced current appears (Faraday’s law). The faster the magnet the higher the induced current. If the solenoid is approached first with the other magneti