Here Is What Happens When A Magnet Is Dropped Through A Copper Pipe

When a magnet is dropped down a conducting copper pipe, it feels a resistive force. The falling magnet induces a current in the copper pipe and, by Lenz’s Law, the current creates a magnetic field that opposes the changing field of the falling magnet. Thus, the magnet is “repelled” and falls more slowly. Source: Secrets Of The Fed

 

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