Assertion: inductor's core | /r/HasProperty | iron
Facets:
value: usually
type: DEGREE
value: simply
type: DEGREE
Source sentences:
text: When the core is metal (such as ferrite or soft iron or simply "iron"), it becomes an INDUCTOR.
text: This core might be a metal such as iron that can be easily magnetised; or in high frequency inductors, it will more likely to be just air.
text: Tip The core of a coil is usually iron, however, it may also be plastic and even air.