In soft iron, the domains return to being randomly aligned when the field is removed. ... The domains align with the field, and retain a good deal of that alignment when the field is removed, resulting in a magnet. An electromagnet, in contrast, uses soft iron; this allows the field to be turned on and off.
In soft iron, the domains return to being randomly aligned when the field is removed. ... The domains align with the field, and retain a good deal of that alignment when the field is removed, resulting in a magnet. An electromagnet, in contrast, uses soft iron; this allows the field to be turned on and off.
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In soft iron, the domains return to being randomly aligned when the field is removed. ... The domains align with the field, and retain a good deal of that alignment when the field is removed, resulting in a magnet. An electromagnet, in contrast, uses soft iron; this allows the field to be turned on and off.
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