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A long copper tube is held vertically, a small bar magnet is released in copper tube, then the bar magnet moves with constant velocity why? |
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Answer» Answer: If bar MAGNET is falling VERTICALLY through the hollow region of long vertical copper TUBE then the magnetic flux linked with the copper tube (due to 'non-uniform' magnetic field of magnet) changes and eddy CURRENTS are generated in the body of the tube by Lenz's law the eddy currents opposes the falling of the magnet ... |
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