A solenoid has a core of material with relative permeability 400. the windings of solenoid are insulated from the core and carrry a current of 2A .if no.of turns per unit length is 1000, the magnetising current
A solenoid has a core of material with relative permeability 400. the windings of solenoid are insulated from the core and carrry a current of 2A .if no.of turns per unit length is 1000, the magnetising current
