A bar magnet was placed underneath a sheet of paper where a pile of iron filings sits. In the presence of the energy stored in the magnetic field, the iron filings arranged themselves, creating lines of force. How do the energy and the lines of force change when a stronger bar magnet is used? The answer is "The energy increases, and the lines of force are denser"
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A bar magnet was placed underneath a sheet of paper where a pile of iron filings sits. In the presen...
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