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प्रश्न
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
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उत्तर
Each molecule of a magnetic substance is an independent magnet. But in an unmagnetised iron piece, molecular/ atoms (tiny magnets) are not arranged in any order and hence they neturalise the magnetic forces of each other As a result, any unmagnetised iron piece can not behave as a magnet.
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संबंधित प्रश्न
You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?
Write true or false of the following statement.
Magnetic poles occur in pairs.
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Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.
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Resistance of a conductor
