A solenoid has a core of material with relative permeability 200 The windings of the solenoid are insulated from the core and

Question

A solenoid has a core of material with relative permeability 200 The windings of the solenoid are insulated from the core and carry a current of 4 A If the number of turns is 500 per metre then the magnetic intensity H is 1 A m 2 10 A m 0 5 A m 0 1 A m

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