Henry

**Semantic type:** Quantitative Concept

**Definition:** A SI derived unit of electric inductance. A coil with an inductance of one henry requires a flux of one weber for each ampere of induced current. If it is the current which changes, then the induced field will generate a potential difference within the coil: if the inductance is one henry a current change of one ampere per second generates a potential difference of one volt. The henry is a large unit; inductances in practical circuits are measured in millihenrys or microhenrys.

**Synonyms:** - H - H - H - H - H - H - henry