Give the SI unit of magnetic permeability of free space.(a) T A m^-2(b) T A^-2 m(c) T A^-1 m(d) T A m^2I had been asked this question by my college professor while I was bunking the class.The doubt is from Magnetic Field due to a Current Element & Biot-Savart Law topic in chapter Moving Charges and Magnetism of Physics – Class 12

Give the SI unit of magnetic permeability of free space.(a) T A m^-2(b

1.	Give the SI unit of magnetic permeability of free space.(a) T A m^-2(b) T A^-2 m(c) T A^-1 m(d) T A m^2I had been asked this question by my college professor while I was bunking the class.The doubt is from Magnetic Field due to a Current Element & Biot-Savart Law topic in chapter Moving Charges and Magnetism of Physics – Class 12
Answer» Right answer is (C) T A^-1 m To elaborate: Magnetic PERMEABILITY of free space is a MEASURE of the amount of resistance ENCOUNTERED when forming a magnetic field in a classical vacuum. The SI unit of permeability is weber ampere^-1 metre^-1 (Wb A^-1 m^-1) or tesla ampere^-1meter (T A^-1 m).

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