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The energy in a magnetic material is due to which process?

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The energy in a magnetic material is due to which process?

(a) Emf

(b) Magnetization

(c) Magnetostriction

(d) Polarization

I had been asked this question by my college professor while I was bunking the class.

This intriguing question comes from Magnetic Energy and Circuits topic in section Magnetic Forces and Materials of Electromagnetic Theory

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Correct answer is (b) Magnetization

Easiest explanation: The energy in a magnetic material is due to the formation of magnetic dipoles which are held together due to magnetic force. This gives energy to the material. Hence it is due to magnetization process.

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