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What are the ferromagnetic Substances ?...

What are the ferromagnetic Substances ?

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### Step-by-Step Solution: 1. **Definition of Ferromagnetic Substances**: Ferromagnetic substances are materials that exhibit a strong attraction to magnetic fields. This means that when placed in a magnetic field, they will be strongly attracted towards the source of the magnetic field. 2. **Permanently Magnetized**: These substances can become permanently magnetized. This characteristic means that once they are magnetized, they will retain their magnetic properties even after the external magnetic field is removed. ...
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