Question

Define (il Hyst,eresis (ii) Retentivity {iii} CoercMty

Answer 1

Hey mate, here is your answer :

I) Hysteresis - the phenomenon in which the value of a physical property lags behind changes in the effect causing it, as for instance when magnetic induction lags behind the magnetizing force.

II) Retentivity - the ability of a substance to retain or resist magnetization, frequently measured as the strength of the magnetic field that remains in a sample after removal of an inducing field.

III) Coercivity - the resistance of a magnetic material to changes in magnetization, equivalent to the field intensity necessary to demagnetize the fully magnetized material.

Hope this answer helps you !!!