Question: The value of μ is 4π×10−7Hm−1.

A)

True

B)

False

The physical constantμ0​commonly called the vacuum permeability, permeability of free space, ... In the reference medium of classical vacuum, μ0 has an exact defined value: .... The value ofμ0​was chosen such that the rmks unit of current is equal in size to the ampere in the emu system: μ0 is defined to be4π×10−7H/m.