(Solved): The magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius ...

The magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius of $0.700\mathrm{m}$ and an outer radius of $1.30\mathrm{m}$. The toroid has 830 turns of large-diameter wire, each of which carries a current of $18.0\mathrm{kA}$. (a) Find the magnitude of the magnetic field inside the toroid along the inner radius. $T$ (b) Find the magnitude of the magnetic field inside the toroid along the outer radius.