Question

The value of $\mu$ is $4\pi \times {10}^{-7}H{m}^{-1}$.

• A. True
• B. False

Answer 1

The correct option is A True

The physical constant ${\mu }_0$ commonly called the vacuum permeability, permeability of free space, ... In the reference medium of classical vacuum, μ0 has an exact defined value: .... The value of ${\mu }_0$ was chosen such that the rmks unit of current is equal in size to the ampere in the emu system: μ0 is defined to be $4\pi \times {10}^{-7}H/m.$