A long solenoid has 1000 per meter and carries a curretn of 1A it has a soft iron core of `mu_(r )` =1000 the core is heated beyond the curie temperature `T_(c )`

Options

A. the h field in the solenoid is unchanged but the b field decreases drasticaly
B. the h and b fields in the solenoid are nearly unchanged
C. the magnetisation in the core reverse direction
D. the magnetisation in the core diminishes by a factor of about `10^(8)`

Answer

A, D