To add comments or start new threads please go to the full version of: The Lenz Law Demonstration
PhysForum Science, Physics and Technology Discussion Forums > Physics > Physics General

rana53
20th March 2012 - 10:20 PM
Gold is a better electrical conductor than copper. How do you think the speed of the falling magnet through a gold tube would compare to the speed of the falling magnet through the copper tube? Refer back to the Lenz law demonstration.

Could you please explain me what's going on in this situation?
Lasand
20th March 2012 - 11:59 PM
The magnet should fall slower in the gold tube.

From wiki:

The lower the resistivity of the material, the greater the size and effect of eddy currents.

http://en.wikipedia.org/wiki/Eddy_current
PhysOrg scientific forums are totally dedicated to science, physics, and technology. Besides topical forums such as nanotechnology, quantum physics, silicon and III-V technology, applied physics, materials, space and others, you can also join our news and publications discussions. We also provide an off-topic forum category. If you need specific help on a scientific problem or have a question related to physics or technology, visit the PhysOrg Forums. Here you’ll find experts from various fields online every day.
To quit out of "lo-fi" mode and return to the regular forums, please click here.
©PhysOrg.com - physics and technology news - Version for PDAs