A toroid has a square cross section with inner radius R1 = 0.050 m and outer radius R2 = 0.060 m. If it has N = 100 loops, calculate the total flux of the magnetic field through one of the loops if the current is i = 2.0 A? 4.4×10−7 Wb 4.6×10−7 Wb 7.3×10−8 Wb 2.5×10−6 Wb