Repulsion is the conclusive test of magnetisation explain.

Repulsion is the surer test of electrification - explain

What is the unit of intensity of magnetisation vec(M) ?

______ is the surmer test of electrification.

The following figure shows the variation of intensity of magnetisation verses the applied field intensity H for three magnetic materials A and B and C indentify the materials A and B and C

Magnetic field at a point a material is 0.02 T and the relative permeability of the material is 1.0001 . Determine the magnetic intensity H and intensity of magnetisation M at that point .

Define test cross with an example.

A paramagnetic sample shows a net magnetisation of 8A.m^(-1) when placed in an external magnetic field of 0 .6T at a temperature of 4 K . When the same sample is placed in an external magnetic field of 0.2T at a temperature of 16 K , the magnetisation would be

FeSO_(4) solution mixed with (NH_(4))_(2)SO_(4) solution in 1:1 molar ratio gives the test of Fe^(2+) ion, but CuSO_(4) solution mixed with aqueous NH_(3) in 1:4 molar ratio does not give the test of Cu^(2+) ion. Explain.