Material for an electromagnet (soft iron): low retentivity and low coercivity

The same question, asked 2 times: 9 May 2024 S1, 19 May 2026 S2. Every wording below, oldest first.

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Question 1
9 May 2024 S1
38 $The materials suitable for making electromagnets should have$
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Question 2
19 May 2026 S2
133 $Soft iron is used in making an electromagnet because$
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