Iron is______________ magnetic material than steel? In an intrinsic semi conductor electron and holes are always________? In a semi conductor a hole behaves like a negative charge? A substance in which the magnetic field reduces to zero by spin and orbital motion of electron is called____________? Force applied on a unit area of a crystal is called? Any super conductor with a critical temperature above 77Ks, the boiling point of Nitrogen, is called high temperature super conductor?
