An iron ring of 3.5 cm2 cross-sectional area with a 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 1 micro-coulomb per scale division, the total resistance of the secondary circuit being 2000 Ω. On reversing a current of 10 A in the magnetising coil, the galvanometer gave a throw of 200 scale divisions. Calculate the flux density in the specimen and the value of the permeability at this flux density.
An iron ring of 3.5 cm2 cross-sectional area with a 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 1 micro-coulomb per scale division, the total resistance of the secondary circuit being 2000 Ω. On reversing a current of 10 A in the magnetising coil, the galvanometer gave a throw of 200 scale divisions. Calculate the flux density in the specimen and the value of the permeability at this flux density.
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An iron ring of 3.5 cm2
cross-sectional area with a 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 1
micro-coulomb per scale division, the total resistance of the secondary circuit being 2000 Ω. On reversing a current
of 10 A in the magnetising coil, the galvanometer gave a throw of 200 scale divisions. Calculate the flux density in
the specimen and the value of the permeability at this flux density.
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