Magnetism
Which of the following statement related to hysteresis loop is incorrect?
Point out the wrong statement about the magnetic properties of soft iron and steel
The B-H curve of both soft iron and steel are shown in figure. From the above hysteresis curve it is clear that area of B-H loop in soft iron is smaller than that of steel.
Which of the following statement related to hysteresis loop is incorrect?
When a ferromagnetic material goes through a hysteresis loop, the magnetic susceptibility.
The figure illustrate how $$ B $$, the flux density inside a sample of unmagnetised ferromagnetic material varies with $$ B_0 $$ , the magnetic flux density in which the sample is kept. For the sample to be suitable for making a permanent magnet
Write two properties of a material suitable for making (a) a permanent magnet, and (b) an electromagnet.