There is a magnetic friction force in a dynamo?

[DanteBR]

There is a "magnetic friction force" in a dynamo?

In a rotating dynamo, where the magnet rotates surrounded by a coil, there is something like a "magnetic friction force"? The magnetic field causes an effect similar to mechanical friction, that can slow down the revolving magnet?

 

[DanteBR]

Does anyone know if such a thing exist?

Imagine that the dynamo is in a vacuum chamber. The rotating magnet does not touch the coil, and there is no air, so there is no aerodynamic drag.

So, I wonder if there is something like a "magnetic friction force", decelerating the rotating magnet. There is this?

 

[bp_psy]

http://hyperphysics.phy-astr.gsu.edu/HBASE/electric/farlaw.html

 

[Redbelly98]

So, I wonder if there is something like a "magnetic friction force", decelerating the rotating magnet. There is this?

Yes, it is well known. Some power tools employ the effect to stop motors quickly. It's a safety feature in for example power saws and electric lawnmowers.