Uploaded March 2021 | Updated September 2026, 22 minutes ago
A simple demonstration of Lenz's law and the principles of Electromagnetic Inductions.
I realise that during my explanation I state that a current is induced in the copper tube. Strictly speaking this is not true: The motion of the magnet induces an EMF (a potential difference) and it is the EMF that drives the current. I wanted to keep my explanation quite simple, though, and so avoided talking about EMFs as I felt this could confuse some viewers.
A simple demonstration of Lenz's law and the principles of Electromagnetic Inductions.
I realise that during my explanation I state that a current is induced in the copper tube. Strictly speaking this is not true: The motion of the magnet induces an EMF (a potential difference) and it is the EMF that drives the current. I wanted to keep my explanation quite simple, though, and so avoided talking about EMFs as I felt this could confuse some viewers.
