Eddy Current Brake

A spinning copper disc is slowed down when a magnet is brought near it. Note that copper is not a magnetic material.

Eddy currents are induced in the disc due to the relative motion of the disc and the magnet. The magnetic fields associated with these currents have such a direction that they oppose the cause that created them in the first place (Lenz rule). As a result they oppose the relative motion between the disc and the magnet and hence the disc is slowed down.

Category:

Education

Tags:

• eddy current brake
• eddy currents
• lenz
• lenz's law
• copper disc in magnetic field
• electromagnetic induction

[BASEM434]

thaaaaaaaaaaaaaaaaaaaaaaaaaaaa­nks

really thanks

i was drifting in you tube trying to find a 3D video to explain the eddy current brake

but you video is amazing and enough to understand

thanks