NEET Physics Question - Magnetic Effects of Current

Assertion (A): Permeability of a ferromagnetic material is independent of the applied magnetic field.

Reason (R): Permeability of ferromagnetic substances is lower for higher value of applied field.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Permeability \(\mu\) of ferromagnetic materials is highly dependent on the applied field and exhibits hysteresis, making Assertion (A) false. While permeability decreases at very high fields due to saturation, it initially increases. So, Reason (R) is not universally true. Therefore, both Assertion (A) and Reason (R) are false.

Rankers Physics

Permeability of Ferromagnetic Materials

Solution:

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