Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Science

sl8

(16,662 posts)

3. In that case, the repulsion is due to the opposing magnetic field formed by current flow induced in the aluminum.

Reply to duncang (Reply #1)

Wed Sep 25, 2024, 07:44 AM

Sep 2024

The AC electromagnet induces current in the aluminum (or copper, silver, etc.) ring, whose accompanying magnetic field is in opposition to that of the original electromagnet.

Edit history

Please sign in to view edit histories.

Recommendations

0 members have recommended this reply (displayed in chronological order):

4 replies

= new reply since forum marked as read

Highlight:

Bismuth is so strongly repelled from magnets, it levitates. How? [View all] Judi Lynn Sep 2024 OP

Aluminum is paramagnetic but will still levitate. duncang Sep 2024 #1

In that case, the repulsion is due to the opposing magnetic field formed by current flow induced in the aluminum. sl8 Sep 2024 #3

My students always stare when I pull Lenz's law out of the air for a demo Igel Sep 2024 #4

Moved post. nt sl8 Sep 2024 #2