Magnetic Field of a Toroid

%% Magnetic Field of a Toroid
% Determines the magnetic field halfway between the inner and outer eadii
%    inside the toroid.

% Constants
muNaught = (4*pi)*10^-7 ;                %[T*m/A] Vacuum Permeability

% Inputs and Variables
N = input('Number of turns\n');
I = input('Current inside the wire\n');
rInner = input('Inner radius\n');
rOuter = input('Outer radius\n');

% Outputs and Equations
r = (rInner+rOuter)/2;
B = muNaught*N*I/(2*pi*r);
fprintf('The magnetic field halfway through the the toroid is %.4e T \n', B)