Q.2. A 680-turn coil is wound on the central limb of a cast steel frame as shown in Fig. below with all dimensions in cms. A total flux of 1.6 mWb is required in the air-gap. Find the current in the magnetizing coil. Assume uniform flux distribution and no leakage. B-H curve for cast steel is given. B Wh/m² 0.1+ 0.5 0.1 cm 16 sq.cm Area 680 turns O 400 H (AT/m) 24 cm 800 1000 68 cm