A coil with 251 turns is wound on a silicon sheet steel toroid and 2.5 A passes through it. The inner radius of the toroid is 20 cm and the outer radius is 30 cm and it has a circular cross-section. a) Magnetic flux density, b) Find the coil inductance value by assuming the flux density is uniform in the core. Flux density, B (testa) 14 1.3 1.2 11 1.0 09 0.8 0.7 0.6 D5 04 0.3 0.2 01 D -Silicon- sheet steel Cast Steel B V Cast iron 200 400 600 800 1000 Field intensity, H (At/m) -