If you drop a bar magnet in a vertical copper pipe it will fall slowly because
A)of air resistance.
B)it induces a magnetic field in the pipe that resists motion of the magnet.
C)the copper is a good conductor of both electricity and magnetism.
D)of electron repulsion.

Question

Quizplus · Accepted Answer

As the bar magnet falls through the vertical copper pipe, it generates a changing magnetic field which in turn induces eddy currents in the pipe. These eddy currents generate a magnetic field that opposes the motion of the magnet, resulting in a slow fall. This phenomenon is known as electromagnetic braking or Lenz's law. The other options (A, C, D) do not accurately explain this observation.

If You Drop a Bar Magnet in a Vertical Copper