A toroidal of mean radius 25 cm has 4000 turns of wire wound on a ferromagnetic core of relative permeability 800. What is the magnetic induction in the core for a magnetizing current of 0.2A.

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

A solenoid has a core of a substance with relative permeability 600. What is the magnetic permeability of the given substance?

For ferromagnetic material, the relative permeability (mu_(r)), versus magnetic intensity (H) has the following shape

A solenoid has length 0.4m , radius 1 cm and 400 turns of wire. If a current fo 5 A is passed through this solenoid, then what is the magnetic field inside the solenoid?

1200 turns of copper wire are wound onto a cardboard cylinder 60 cm long and 5 cm diameter. What is the inductance of the coil?

For toroid of mean radius 20 cm, turns = 240 and a current of 2A. What is the value of magnetic field within toroid ?

A circular coil of radius 10 cm "and" 100 turns carries a current 1A. What is the magnetic moment of the coil?

A toroid has a core (non ferromagnetic material) of inner radius 25cm and outer radius 26cm around which 3500 turns of wire are wound. If the current in the wire is 11A , what is the magnetic field (a) outside the toroid (b) inside the core of the toroid (c) in the empty space surrounded by the toroid?