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प्रश्न
Why is soft iron generally used as the core of the electromagnet?
उत्तर
(i) Soft iron has less retentivity so it acquires the magnetic properties only when the current flows through the coil wound on it and loses the magnetic properties as the current is switched off.
(ii) The soft iron intensifies the magnetic field of the electromagnet because of its high permeability.
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संबंधित प्रश्न
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