A Rowland ring of mean radius 15 cm has 3500 turns of wire wound on a ferromagnetic core of relative permeability 800. What is the magnetic field B in the core for a magnetising current of 1.2 A?

A Rowland ring of mean radius 15 cm has 3500 tums of wire wound on a ferromagnetic core of relative permeability 800. What is the magnetic field B in the core for a magnetising current of 1.2 A?

A Rowland ring of mean radius 15 cm has 3500 tums of wire wound on a ferromagnetic core of relative permeability 800. What is the magnetic field B in the core for a magnetising current of 1.2 A?

A Rowland ring of mean radius 15cm has 3500 turns of wire wound on a ferromangetic core of relative permeability 800 . What is the magnetic field B in the core for a magnetising current of 1*2A ?

A ring of mean radius 15cm has 3500 turns of wire wound on a ferromagnetic core of relative permeability 800 . What is the magnetic field in the core for a magnetising current of 2*4A ?

A Rowland rign of mean radius 18cm has 3500 turns of wire wound on a ferromagnetic core of relative permeability 800 . What is the magnetic field in the core for a magnetising current of 1*2amp .?

A Rowland ring of mean radius 16 cm has 4000 turns of wire wound on a ferromagnetic core of relative permeability 800 . What is magnetic field in the core for a magnetising current of 1.2 A ?

A Rowland ring of mean radius 16 cm has 4000 turns of wire wound on a ferromagnetic core of relative permeability 800 . What is magnetic field in the core for a magnetising current of 1.2 A ?