A long solenoid has 1000 turns per metre and carries a current of `1A`. It has a soft iron core of `mu_r=1000`. The core is heated beyond the Curie temperature, `T_c`.

A long solenoid has 1000 turns per meter and carries a current of 1 A. It has a soft iron core of mu_(r) = 1000 . The core is heated beyond the Curie temperature, T_(C) .

A long solenoid has 1000 turns per metre and carries a current of 1 A . It has a soft iron core of mu_(r)=1000 . The core is heated beyond Curie temperature T_(c) .

A long solenoid has 1000 turns per metre and carries a curent of 1A. It has a soft iron of mu_1 =1000 . The core is heated beyond the Curie temperature T_c .

A long solenoid has 200 turns per cm and carries a current of 2.5A. The magnetic field at its centre is

A solenoid of 600 turns per metre is carrying a current of 4 A . Its core is made of iron with relative permeability of 5000. Calculate the intensity of magnetisation and magnetic field inside the core .

A solenoid is 2 m long and 3 cm in diameter. It has 1000 turns and carries a current of 5A. Magnetic field at the centre is