Calculate the flux density in the specimen and the value of permeability

Posted on 2014-01-28 16:21:00 in Engineering by PLUMBERMMM

An iron ring of 3.5 cm² x-sectional area with mean length of 100 cm is wound with a magnetising winding of 100 turns. A secondary coil of 200 turns of wire is connected to a ballistic galvanometer having a constant of 10 µC per scale division, the total resistance of the circuit being 2000 ?. On reversing a current of 1 A in the magnetising coil, the galvanometer gave a throw of 1000 scale divisions. Calculate the flux density in the specimen and the value of permeability at the flux density.

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