Question 51 of 149
If is magnetic field and is permeability of free space, then the dimensions of is
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Answer: (C)
For a current carrying loop at centre
$\begin{aligned}
& B=\frac{\mu_0 i}{2 R} \\
& \therefore \quad \frac{B}{\mu_0} \equiv \frac{i}{R} \equiv\left[\mathrm{AL}^{-1}\right]
\end{aligned}$
$\begin{aligned}
& B=\frac{\mu_0 i}{2 R} \\
& \therefore \quad \frac{B}{\mu_0} \equiv \frac{i}{R} \equiv\left[\mathrm{AL}^{-1}\right]
\end{aligned}$
