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प्रश्न
How do you account for the following fact?
Steel makes better permanent magnet than soft iron.
उत्तर
Steel makes better permanent magnet than soft iron because on magnetizing steel, steel retains their magnetic behavior for longer time even after the removal of the source which is magnetizing the steel.
While the soft iron retains the properties of magnetism only so long as the current is passing through the coil i.e. as long as the source which is magnetizing the soft iron is present.
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