Let us determine the dimensional formulae for the given physical quantities:
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Magnetic permeability (μ0): The force per unit length between two parallel current-carrying conductors is given by lF=2πdμ0I1I2.
Rearranging for μ0, we get μ0=I1I2lF⋅2πd.
Substituting the dimensions: Force [F]=[MLT−2], distance [d]=[L], length [l]=[L], and current [I]=[A].
Dimensions of μ0=[A]2[L][MLT−2][L]=[MLT−2A−2].
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Electric permittivity (ε0): From Coulomb's law, F=4πε01r2q1q2⟹ε0=4πFr2q1q2.
Its dimensions are [MLT−2][L]2[AT]2=[M−1L−3T4A2].
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Magnetic flux (ΦB): ΦB=B⋅A. The dimensions of magnetic field [B]=[MT−2A−1] and area [A]=[L2].
So, dimensions of ΦB=[ML2T−2A−1].
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Self-inductance (L): Energy stored in an inductor is U=21LI2⟹L=I22U.
Its dimensions are [A]2[ML2T−2]=[ML2T−2A−2].
Therefore, the dimensions [MLT−2A−2] correspond to magnetic permeability .