Question

the dimension of the product of electric permittivity and magnetic permeability ​

Answer 1

In metre–kilogram–second (mks) and SI units, B and H have different dimensions, and the permeability of free space (symbolized μ0) is defined as equal to 4π × 10-7 weber per ampere-metre so that the mks unit of electric current may be the same as the practical unit, the ampere.

Answer 2

in meters -kilogram- second (mks)and SI units, B and H have different dimensions , and the permeability of free space is defined as equal to (4×3.14..)×10 to the power -7 per ampere metre . so that the mks unit of electric current may be the same as the practical unit,the ampere