Electromagnets are made of soft iron because soft iron has (a) low retentivity and high coercive force (b) high retentivity and high coercive force (c) low retentivity and low coercive force (d) high retentivity and low coercive force

Answer: (c). An electromagnet should become magnetised strongly and lose that magnetism quickly when the current stops. Soft iron has low retentivity and low coercive force, so it has a narrow hysteresis loop. So the answer is (c) low retentivity and low coercive force.

Electromagnets are made of soft iron because soft iron has | NEET 2010 (AIPMT, Prelims)

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Hysteresis, Soft Iron vs Steel & Shielding

Electromagnets are made of soft iron because soft iron has

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Answer: (c)

An electromagnet should become magnetised strongly and lose that magnetism quickly when the current stops.
Soft iron has low retentivity and low coercive force, so it has a narrow hysteresis loop.
So the answer is (c) low retentivity and low coercive force.

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