Give the dimensional formula for magnetic permeability of free space.(a) [M L T^-2 A^-2](b) [M^2 L T^-2 A^-2](c) [M L^2 T^-2 A^-2](d) [M^-1 L T^-2 A^-2]The question was posed to me during a job interview.This intriguing question comes from Magnetic Field due to a Current Element & Biot-Savart Law in chapter Moving Charges and Magnetism of Physics – Class 12

Give the dimensional formula for magnetic permeability of free space.(

1.	Give the dimensional formula for magnetic permeability of free space.(a) [M L T^-2 A^-2](b) [M^2 L T^-2 A^-2](c) [M L^2 T^-2 A^-2](d) [M^-1 L T^-2 A^-2]The question was posed to me during a job interview.This intriguing question comes from Magnetic Field due to a Current Element & Biot-Savart Law in chapter Moving Charges and Magnetism of Physics – Class 12
Answer» Right answer is (a) [M L T^-2 A^-2] The explanation: MAGNETIC permeability = Magnetic flux density × [Magnetic FIELD STRENGTH]^-1. μ = [M L^0 T^-2 A^-1] × [M^0 L^-1 T^0 A^1]^-1 μ = [M L T^-2 A^-2].

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