We know that the magnetic field at the center of a single loop is given by the formula:
$B = \frac{\mu_0 I}{2R}$
where $B$ is the magnetic field, $\mu_0$ is the permeability of free space ($4\pi \times 10^{-7} \, Tm/A$), $I$ is the current, and $R$ is the radius
Show more…