Q. 54.0( 1 Vote )

# When a ferromagne A. has a fixed value

B. may be zero

C. may be infinity

D. may be negative

Answer :

Magnetic susceptibility () is given by formula

..(i)

When a ferromagnetic material goes through a hysteresis loop

At point C:

Magnetic intensity H becomes 0 whereas magnetization I is finite.

From(i) we get

At point G:

Magnetization I, becomes 0 whereas H is finite

From(i) we get

In the second quadrant H is negative whereas I is positive therefore

Becomes negative here

Therefore, when a ferromagnetic material goes through hysteresis loop the magnetic susceptibility may be zero, may be negative and may be infinity.

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