Question

Q. The dimensional formula of permeability of free space \(\mu_{0}\) is

(A) \(\left[M L T^{-2} A^{-2}\right]\)
В \(\left[M^{0} L^{1} T\right]\)
c \(\left[M^{0} L^{2} T^{-1} A^{2}\right]\)
D none of these

Answer 1

Solution:
Permeability of free space
$$
\begin{aligned}
&\mu_{0}=\frac{2 \pi \times \text { force } \times \text { distance }}{\text { current } \times \text { current } \times \text { length }} \\
&\text { Dimensional formula of } \mu_{0}=\frac{\left[M L T^{-2}\right][L]}{[A][A][L]} \\
&=\left[M L T^{-2} A^{-2}\right]
\end{aligned}
$$

Answer 2

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Answer 3

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