The $SI$ unit of magnetic permeability is
The $SI$ unit of magnetic permeability is
- A
$Wb\;m ^{-2}\; A ^{-1}$
- B
$Wb\;m ^{-1}\; A$
- C
$Wb\;m\;A ^{-1}$
- D
$Wb\;m ^{-1} \;A ^{-1}$
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