Assertion: inductor's field | /r/HasProperty | removed
Facets:
Source sentences:
text: They retain the polarity of their magnetisation once the magnetising field has been removed, i.e. they have a high remanance level.
text: Annealed iron is used because, unlike "hard" iron, it has low coercivity and so does not remain magnetised when the field is removed, which is often important in applications where the magnetic field is required to be repeatedly switched.