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11. A magnetic core has cross-sectional area of 16 cm?. The air-gap length is 2 mm. Length of iron path is calculated as 73.8

11. A magnetic core has cross-sectional area of 16 cm?. The air-gap length is 2 mm. Length of iron path is calculated as 73.8 cm. The exciting coil has 2000 turns. Calculate the current which is required to flow through the winding to create an air-gap flux of 4 mWb. Assume relative permeability of the core material to be 2000. (Ans: I= 2.356 A)

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