Assertion: magnetic field | /r/CreatedBy | the coil
Facets:
value: at its center
type: LOCATION
Source sentences:
text: Often, the coil is wrapped around a core of "soft" ferromagnetic material such as mild steel, which greatly enhances the magnetic field produced by the coil.
text: If we have a short (compared to its radius) coil with N loops, then the magnetic moment of the coil is μ = NIAn, and the magnetic field produced by the coil at its center is is B = (μ 0 NI/(2R))n.