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[" A toroidal solenoid has "3000" turns ...

[" A toroidal solenoid has "3000" turns and a "],[" mean radius of "10cm." It has a soft iron core "],[" of relative permeability "2000." Find the "],[" magnetic field in the core when a current of "],[1.0A" is passed through the solenoid.(in "],[" units of "T" ) "]

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