Question

unit of relative permeability

Answer 1

The term was coined in September 1885 by Oliver Heaviside. The reciprocal of magnetic permeability is magnetic reluctance. In SI units, permeability is measured in henries per meter (H/m or H. m−1), or equivalently in newtons per ampere squared (N.

Answer 2

So unit

Henrie's per metre or Newton per ampere square