A bar magnet is gone down with an upright copper tube as well as is observed to drop extremely gradually, although that mechanical rubbing in between the tube as well as the magnet is minimal.    Which of adhering to ideal clarifies the factor for this?

A. The dropping magnet allures the copper pipeline which creates the currently irreversible copper pipeline magnet to bring in the dropping magnet therefore triggering the slower descent.

B. The dropping magnet is reduced by the Planet's electromagnetic field.

C.   The transforming change of the dropping magnet generates an electromagnetic field in the copper pipeline, in the contrary instructions of bench magnet'' s area, which restrains the motion with the pipeline.

D.   Rubbing and also Air resistance trigger the magnet to drop a lot slower than it would certainly beyond television.


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