Measuring Magnetization by Induction Method:

This method depends on the Faraday's law of electromagnetic induction, i.e., the electro motive force (e.m.f.) induced in a circuit is equal to the rate of change of flux linking the circuit

Φ is the magnetic flux passing through the coil, N is the number of turns in coil

The induced e.m.f. can be enhanced by,

(i) changing the magnetic field strength

(ii) moving a magnet towards or away from the coil,

(iii) moving the coil into or out of the magnetic field,

(iv) rotating the coil relative to the magnet, etc.

The above equation can be rewritten as