Question

Two reason s for using a soft iron bar in an electromagnet

Answer 1

1) The soft iron inside the coil makes the magnetic field stronger because it becomes a magnet itself when the current is flowing.

2) Soft iron is used because it loses its magnetism as soon as the current stops flowing

Answer 2

very easy. One is to increase the magnetic field of the current carrying solenoid and other reason is to Increase the magnetic strength of the solenoid..... I hope this will be helpful to you......