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What is dimensional formula of permeability of free space. Give its explanation ?

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@Vijay

use the formulae of force between charges to get dimension 

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Safeer PP

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@Vijay

M^{1}L^{1}T^{-2}A^{-2}

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Safeer PP

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@Vijay

Magnetic Field Due to a Straight Wire

B=\frac{\mu_{o}i}{4\pi r}(\sin\phi_{1}+\sin\phi_{2})

you can use any relation that includes permeability of free space to obtain dimensional formula

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Safeer PP

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