Question

magnetic susceptibility for vaccum is​

Answer 1

Answer:

Adopted in 1948, the effect of this definition was to fix the magnetic constant (permeability of vacuum) at exactly 4π×10−7 H/m. In the SI system which has gone into force in 2019, this value is determined experimentally; 4π × 1.00000000055(15)×10−7 H⋅m−1 is a recently measured value in the new system.

Answer 2

Answer:

Adopted in 1948, the effect of this definition was to fix the magnetic constant (permeability of vacuum) at exactly 4π×10−7 H/m. ... In the SI system which has gone into force in 2019, this value is determined experimentally; 4π × 1.00000000055(15)×10−7 H⋅m−1 is a recently measured value in the new system.