Question: 1.A rectangular magnetic core shown in figure below has square cross-section of area 16cm2. An air-gap of 2 mm is cut across one of its

1.A rectangular magnetic core shown in figure below has square cross-section of area 16cm2. An air-gap of 2 mm is cut across one of its limbs. Find the exciting current neededin the coil having 1000 turns wound on the core to create an air-gap flux of 4 mWb. Therelative permeability of the core is 2000

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