Answer
$B=0.787T$
Work Step by Step
We can find the magnitude of the magnetic field from the formula:
$B=\frac{2\pi fm_p}{q}$
We plug in the known values in the formula to obtain:
$B=\frac{2(3.1416)(12\times 10^6)(1.67\times 10^{-27})}{1.6\times 10^{-19}}$
$B=0.787T$
