The dimensional formula of permeability μ0 is

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M-1LT-2A-1

ML-1T-1A-3

M2L2T-1A-2

MLT-2A-2

answer is D.

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Detailed Solution

For two parallel current carrying wires, force per unit length of a wire is given byF=μ0i1i22πr∴μ0=Fri1i2=MLT-2L.LA2=MLT-2A-2

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