The initial permeability of an iron rod is________________?
Correct answer: D. the permeability almost in non-magnetised state
- A. the highest permeability of the iron rod
- B. the lowest permeability of the iron rod
- C. the permeability at the end of the iron rod
- D. the permeability almost in non-magnetised state
Explanation
Initial permeability is the permeability measured from the nearly unmagnetised state, at the beginning of the magnetisation curve. It is not necessarily the maximum permeability of the material.
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