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What will happen with magnetic materials is kept in an external magnetic field?

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What will happen with magnetic materials is kept in an external magnetic field?

(a) They will move

(b) They will develop magnetic lines of force

(c) They will create a permanent magnetic moment

(d) They will be unaffected

The question was posed to me in a job interview.

This question is from Classification of Magnetic Materials topic in division Magnetic Properties of Materials of Engineering Physics II

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Correct answer is (c) They will create a permanent magnetic moment

Easy explanation: Magnetic materials are the materials which can behave like magnets. When these materials are kept in an external magnetic field, they will create a permanent magnetic moment in it.

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